Search results for: tga

• Molecular and structural characteristics of cod gelatin films modifiedwith EDC and TGase

  Publication

  • H. Staroszczyk
  • J. Pielichowska
  • K. Sztuka
  • J. Stangret
  • I. Kołodziejska

  - FOOD CHEMISTRY - Year 2012

  Cod gelatin films before and after cross-linking of gelatin with 1-ethyl-3-(3-dimethylaminopropyl) carbodiimide (EDC) or transglutaminase (TGase) have been characterized by FT-IR spectroscopy and DSC analysis. For comparison, a film prepared from unmodified pig gelatin has been also analysed. The difference spectra showed that cod gelatin during the film formation involved first of all water-to-amide hydrogen bonds, and the film...

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• Heteroleptic tri-tert-butoxysilanethiolate complexes of manganese(II) - thermal studies

  Publication

  • A. Mietlarek-Kropidłowska
  • M. Strankowski
  • M. Gazda
  • B. Becker

  - JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY - Year 2007

  The thermal behavior of Mn(II) silanethiolate series [Mn(SR)2L(MeOH)n], where R=SSi(OBut)3, L=heterocyclic nitrogen base and n=0, 1 or 2 has been comparatively investigated using differential scanning calorimetry (DSC), thermogravimetry (TG) and TG-infrared spectoscopy (IR) techniques. The TG curves indicate the differences in the thermal decomposition due to presence of distinct N-donor ligands and labile MeOH molecules coordinated...

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• Superconductivity in three-layer Na0.3CoO2*1.3H2O

  Publication

  • M. L. Foo
  • T. Klimczuk
  • L. Lu
  • N. Ong
  • R. J. Cava

  - Year 2005

  Odkryto nadprzewodnictwo w trójwarstwowym związku uwodnionego sodowo -kobaltowego tlenku Na0.3CoO2 * 1.3H2O. Opisany został sposób syntezy, badania strukturalne (XRD i TGA) a także badania podatności magnetycznej.

• Thermal decomposition of [Cd{SSi(OBut)3}(S2CNC4H8)]2 to CdS “micro-noodles”

  Publication

  • A. Mietlarek-Kropidłowska
  • M. Strankowski
  • M. Gazda
  • B. Becker

  - Year 2013

  This work presents studies on thermal degradation of novel heteroleptic complex possessing mixed S-donor ligands, [Cd{SSi(OBut)3}(S2CNC4H8)]2 using TGA, DSC, TGA-IR, SEM and XRD methods.

• The effects of bifunctional linker and reflux time on the surface properties and photocatalytic activity of CdTe quantum dots decorated KTaO3 composite photocatalysts

  Publication

  • B. Bajorowicz
  • J. Nadolna
  • W. Lisowski
  • T. Klimczuk
  • A. Zaleska-Medynska

  - APPLIED CATALYSIS B-ENVIRONMENTAL - Year 2017

  Novel CdTe-KTaO3composite photocatalysts were successfully synthesized by using thioglycolic acid(TGA) or 3-mercaptopropionic acid (MPA) as linker molecules which facilitated attachment of CdTequantum dots to the surface of KTaO3nanocubes. The as-prepared photocatalysts were characterizedby UV–vis diffuse reflectance spectroscopy (DRS), X-ray diffraction (XRD), scanning electron microscopy(SEM), transmission electron microscopy...

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• Isothermal Vulcanization and Non-Isothermal Degradation Kinetics of XNBR/Epoxy/XNBR-g-Halloysite Nanotubes (HNT) Nanocomposites

  Publication

  • S. Paran
  • G. Naderi
  • E. Movahedifar
  • M. Jouyandeh
  • K. Formela
  • X. Colom
  • J. Cañavate
  • M. Saeb

  - Materials - Year 2021

  The effect of several concentrations of carboxylated nitrile butadiene rubber (XNBR) functionalized halloysite nanotubes (XHNTs) on the vulcanization and degradation kinetics of XNBR/epoxy compounds were evaluated using experimental and theoretical methods. The isothermal vulcanization kinetics were studied at various temperatures by rheometry and differential scanning calorimetry (DSC). The results obtained indicated that the...

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• Badania dotyczące ustalenia poziomu polipropylenu i polietylenu w mieszaninie polimerowej - Raport z badań zleconych - Numer umowy: 031664

  Publication

  • J. Datta
  • M. Włoch

  - Year 2015

  Badanie składu chemicznego (metodą FTIR oraz metodą rozpuszczania na gorąco w ksylenie), własności termicznych (metodą DSC) oraz stabilności termicznej (metodą TGA) mieszaniny polimerowej złożonej głównie z wtórnego polietylenu i polipropylenu

• FTIR spectroscopic and thermogravimetric characterization of ground tyre rubber devulcanized by microwave treatment

  Publication

  • X. Colom
  • A. Faliq
  • K. Formela
  • J. Cañavate

  - POLYMER TESTING - Year 2016

  In this work, the phenomena involved in the microwave devulcanization of ground tyre rubber (GTR) were investigated. Three types of GTR with different content of organic compounds (elastomers, plasticizers, etc.), carbon black and ash have been studied. The chemical structure of GTR before and after a microwave devulcanization process was analyzed by Fourier transform infrared spectroscopy (FTIR), thermogravimetric analysis (TGA)...

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• Physical and mechanical properties of rigid polyurethane faoms modified with selected flame retardants or layered silicates

  Publication

  • Ł. Piszczyk
  • M. Danowska
  • M. Strankowski
  • I. Gibas
  • J. T. Haponiuk

  - ADVANCED COMPOSITES LETTERS - Year 2011

  W pracy przedstawiono charakterystykę pianek poliuretanowych zawierających klasyczne środki uniepalniające oraz nanonapełniacze z grupy glinokrzemianów warstwowych. Zbadano wpływ zarówno nanonapełniaczy na bazie naturalnego montmorylonitu, jak i modyfikowanych glinokrzemianów. Uzyskane spienione poliuretanowe o zmniejszonej palności charakteryzowano z wykorzystaniem różnych technik badawczych, między innymi wykonano badania DMA,...

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• Synteza i charakterystyka „zielonych” mieszanin polimerowych na bazie biopochodnego termoplastycznego poliuretanu i octanomaślanu celulozy

  Publication

  • E. Głowińska
  • J. Smorawska
  • J. Brzoska
  • J. Grocholska
  • J. Datta

  - Przemysł Chemiczny - Year 2024

  Otrzymano mieszaniny polimerowe z biopochodnego termoplastycznego poliuretanu (TPU) i dostępnego handlowo octanomaślanu celulozy (CAB), stosowanego w ilości 0–20%. TPU syntezowano metodą prepolimerową z wykorzystaniem biopoliolu, glikolu 1,3-propylenowego i diizocyjanianu heksametylenu. Materiały poddano analizie pod kątem struktury chemicznej (FTIR), właściwości termicznych (TGA, DSC) i właściwości termomechanicznych (DMTA).

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• Zbadanie struktury i wybranych własności elementów wykonanych z ABS i ABS/PC oraz ustalenie przyczyn występowania wad powierzchniowych na tych elementach

  Publication

  • J. Datta
  • M. Włoch
  • E. Głowińska

  - Year 2016

  Przebadano próbki wykonane z ABS oraz PC/ABS. Zakres przeprowadzonych badań i analiz obejmował: (1) Spektroskopię w podczerwieni z transformacją Fouriera (FTIR), (2) Różnicową Kalorymetrię Skaningową (DSC), (3) Analizę Termograwimetryczną (TGA), (4) Masowy i Objętościowy Wskaźnik Szybkości Płynięcia (MFR i MVR), (5) Twardość metodą Shore’a D oraz (6) wizytę w zakładzie produkcyjnym i analizę procesów montażowych.

• Fabrication of the cross-linked PVA/TiO2/C nanocomposite membrane for alkaline direct methanol fuel cells

  Publication

  • F. Khalid
  • A. S. Roy
  • A. Parveen
  • R. Castro Munoz

  - MATERIALS SCIENCE AND ENGINEERING B-SOLID STATE MATERIALS FOR ADVANCED TECHNOLOGY (Materials Science and Engineering B-Advanced Functional Solid-State Materials) - Year 2024

  A crosslinked Poly(vinyl alcohol) based composite membrane was developed through a phase inversion process for use in alkaline direct methanol fuel cells (ADMFCs). The titanium dioxide (TiO2) and carbon nanoparticles (NPs) have been incorporated into the PVA polymer matrix to improve the mechanical and thermal properties. The membrane samples were further modified with maleic acid, a carboxylic acid acting as the cross-linker,...

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• The new type of [Zr6(μ3-O)4 (μ3-OH)4] cluster core: Crystal structure and spectral characterization of [Zr6O4(OH)4(OOCR)12] (R = Bu^t^,C(CH3)2Et)

  Publication

  • P. Piszczek
  • A. Bradtke
  • A. Grodzicki
  • A. Wojtczak
  • J. Chojnacki

  - POLYHEDRON - Year 2007

  Sześciojądrowe oxo karboksylowe kompleksy cyrkonu(IV) zostały otrzymane z Zr(OR')4 i odpowiednich kwasów organicznych HOOCR (R=t-Bu, CMe2Et) w stosunku molowym 1:2. Struktury krystaliczne dwóch związków o wzorze [Zr6O4(OH)4(OOCR)12] (1 dla R=t-Bu i 2 dla R=-CMe2Et) zostały rozwiązane w grupie przestrzennej R-3. Substancje zostały przebadane termograwimetrycznie (TGA/DTA) oraz przy użyciu spektroskopii w podczerwieni ze zmienną...

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• Badanie wpływu temperatury i czasu wygrzewania na właściwości elastomerów uretanowych.

  Publication

  • J. Datta
  • L. Malinowski

  - Year 2004

  Opisano syntezę lanych elastomerów uretanowych metodą prepolimerową oraz wyniki pomiarów właściwości otrzymanych polimerów poddanych wygrzewaniu w krótkich czasach w jednej z trzech temperatur: 100, 110 i 120 st. C. Do oceny właściwości termicznych zastosowano metodę DSC i DMT. Stabilność termiczną zbadano za pomocą TGA. Właściwości mechaniczne oznaczono przy użyciu maszyny wytrzymałościowej. Ustalono, że za optymalny czas wygrzewania...

• Badania spektroskopowe wybranych silanotiolanów metali o budowie polimerycznej

  Publication

  • A. Pladzyk
  • K. Kazimierczuk
  • K. Dziubińska
  • Ł. Ponikiewski

  - Year 2012

  Podjęto próby otrzymania tri-tert-butoksysilanotiolanowych kompleksów niklu(II), kobaltu(II), cynku(II) i kadmu(II) o budowie polimerycznej mogących pełnić rolę prekursorów w syntezie materiałów funkcjonalnych. W tym celu przeprowadzono syntezy odpowiednich silanotiolanowych metali z grupą diamin alifatycznych. Otrzymano szereg nowych obojętnych polimerów koordynacyjnych o budowie przestrzennej typu 1D. Dla siedmiu z nich zostały...

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• Layer-by-layer polymer deposited fabrics with superior flame retardancy and electrical conductivity

  Publication

  • S. Ehsanimehr
  • R. Sonnier
  • P. Najafi
  • F. Ducos
  • M. Badawi
  • K. Formela
  • M. Saeb
  • H. Vahabi

  - REACTIVE & FUNCTIONAL POLYMERS - Year 2022

  Smart and multifunctional textiles and fabrics are progressively developing, such that multifunctional fabrics are becoming more widespread. We elaborated herein multi-layered flax fabrics with superior flame retardancy and conductivity, which revealed fireproof feature while keeping conductivity during burning. The flax fabric was reinforced by layer-by-layer (LbL) deposition of sodium polyacrylate (SPA), polyethylenimine (PEI),...

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• Influence of hydrogen on a nanocrystalline high-entropy oxide with application potential in hydrogen technologies

  Publication

  • K. Domaradzki
  • M. Nowak
  • M. Sitarz
  • M. S. Łapiński
  • T. Brylewski
  • M. Jurczyk

  - CERAMICS INTERNATIONAL - Year 2023

  The influence of hydrogen on a (Co0⋅2Cu0⋅2Mg0⋅2Ni0⋅2Zn0.2)O HEO with a rock salt structure was studied. Two forms of this HEO (nanopowder and sinter) were prepared via mechanochemical synthesis (MS) and additional heat treatment, respectively. The chemical stability of the synthesized samples in a pure hydrogen atmosphere was investigated using Sievert’s technique. High-pressure hydrogenation at 250 ◦C had no noticeable effect...

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• Synergistic Effects of Bitumen Plasticization and Microwave Treatment on Short-Term Devulcanization of Ground Tire Rubber

  Publication

  • Ł. Zedler
  • M. Klein
  • M. Saeb
  • X. Colom
  • J. Cañavate
  • K. Formela

  - Polymers - Year 2018

  Ground tire rubber (GTR) was mechano-chemically modified with road bitumen 160/220 and subsequently treated using a microwave radiation. The combined impact of bitumen 160/220 content and microwave treatment on short-term devulcanization of GTR was studied by thermal camera, wavelength dispersive X-ray fluorescence spectrometry (WD-XRF), static headspace, and gas chromatography-mass spectrometry (SHS-GC-MS), thermogravimetric analysis...

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• Diatoms Biomass as a Joint Source of Biosilica and Carbon for Lithium-Ion Battery Anodes

  Publication

  • A. Nowak
  • M. Sprynskyy
  • I. Wojtczak
  • K. Trzciński
  • J. Wysocka
  • M. Szkoda
  • B. Buszewski
  • A. Lisowska-Oleksiak

  - Materials - Year 2020

  The biomass of one type cultivated diatoms (Pseudostaurosira trainorii), being a source of 3D-stuctured biosilica and organic matter—the source of carbon, was thermally processed to become an electroactive material in a potential range adequate to become an anode in lithium ion batteries. Carbonized material was characterized by means of selected solid-state physics techniques (XRD, Raman, TGA). It was shown that the pyrolysis...

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• Preliminary Investigation on Auto-Thermal Extrusion of Ground Tire Rubber

  Publication

  • Ł. Zedler
  • D. Kowalkowska-Zedler
  • H. Vahabi
  • M. Saeb
  • X. Colom
  • J. Cañavate
  • S. Wang
  • K. Formela

  - Materials - Year 2019

  Ground tire rubber (GTR) was processed using an auto-thermal extrusion as a prerequisite to green reclaiming of waste rubbers. The reclaimed GTR underwent a series of tests: thermogravimetric analysis combined with Fourier-transform infrared spectroscopy (TGA-FTIR), scanning electron microscopy (SEM), Fourier-transform infrared spectroscopy (FTIR), and static headspace and gas chromatography-mass spectrometry (SHS-GC-MS) in order...

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• Thermal and Mechanical Properties of Microporous Polyurethanes Modified with Reduced Graphene Oxide

  Publication

  • M. Strankowski
  • D. Włodarczyk
  • Ł. Piszczyk
  • J. Strankowska

  - International Journal of Polymer Science - Year 2016

  Microporous polyurethanes (MPU) were modified by adding 0.25%–1.25 wt% of reduced graphene oxide (RGO). The materials were prepared without solvent via in situ polymerization. From a technological point of view, it is very important to obtain functional materials by using reacting compounds only. The thermal characteristics of obtained MPU were investigated using TGA, DSC, and DMA techniques. In comparison to nonmodified microporous...

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• The influence of thermal conditions on V2O5 nanostructures prepared by sol-gel method

  Publication

  • M. Prześniak-Welenc
  • M. S. Łapiński
  • T. Lewandowski
  • B. Kościelska
  • L. Wicikowski
  • W. Sadowski

  - Journal of Nanomaterials - Year 2015

  This work presents the result of structure investigations ofV 2O5 nanorods grown from thin films and powders prepared by sol-gel method. To examine the best temperature of nanorods crystallization, thin films deposited by spin-coating method on quartz glass or silicon substrates and bulk xerogel powders were annealed at various temperatures ranging from 100∘C to 600∘C. The structure of the samples was characterized by X-ray diffraction...

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• FUNKCJONALIZOWANE ADSORBENTY WĘGLOWE DO EFEKTYWNEGO USUWANIA JONÓW METALI Z WODY

  Publication

  • M. Nadolska-Dawidowska
  • K. Sadowska

  - Year 2019

  W niniejszej pracy zbadano skuteczność adsorpcyjnego usuwania jonów Hg2+, Sr2+ z roztworów wodnych, z wykorzystaniem funkcjonalizowanych materiałów węglowych. Jako adsorbenty zastosowano nanorurki węglowe, tlenek grafenu oraz węgiel aktywny. Oprócz często stosowanej praktyki jaką jest wykorzystanie materiałów węglowych które na swojej powierzchni zawierają tlenowe grupy funkcyjne, zaproponowano aby na powierzchnię materiałów węglowych...

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• Electrochemical behavior of a composite material containing 3D-structured diatom biosilica

  Publication

  • A. Nowak
  • M. Sprynskyy
  • W. Brzozowska
  • A. Lisowska-Oleksiak

  - Algal Research-Biomass Biofuels and Bioproducts - Year 2019

  3D-structured diatom biosilica mixed with conducting carbon black was investigated as an active electrode material for lithium-ion batteries. Diatom biosilica was obtained by cultivation of the selected diatom species under laboratory conditions. Several instrumental techniques (XRD, FTIR, Raman, SEM-EDX, TGA) were used to characterize the physicochemical properties of applied biosilica. It was evidenced that the prepared new composite...

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• Assessment of the devulcanization process of EPDM waste from roofing systems by combined thermomechanical/microwave procedures

  Publication

  • X. Colom
  • J. Cañavate
  • K. Formela
  • A. Shadman
  • M. Saeb

  - POLYMER DEGRADATION AND STABILITY - Year 2021

  Ethylene-propylene-diene rubber (EPDM) is a elastomer widely used in common industrial applications. EPDM can be shaped into sheets and employed as isolating material for roofing systems. In this study, scraps of EPDM from commercial, industrial and residential roofing systems were treated by combined thermo-mechanical and microwave devulcanization processes including peroxide of benzoyl (BPO). The devulcanized EPDM (Dev-EPDM)...

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• Novel cast polyetherurethanes based on dispersed polymeric polyols

  Publication

  • E. Głowińska
  • J. Datta
  • J. F. Rodríguez
  • D. Simón
  • M. Carmona

  - POLYMER TESTING - Year 2018

  Our study was focused on obtaining polyetherurethanes synthesized with using polymeric polyether based polyols differing in dispersed copolymer content (10, 20 and 40 wt%). The polyetherurethane materials were synthesized via two step method. The influence of different polymeric polyether based polyols on the chemical structure, morphology, mechanical and thermal properties of the obtained polyetherurethanes was investigated. The...

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• Kinetic analysis of the reduction of a ternary system of Bi, Sb and Te oxides by hydrogen for BiSbTe3 synthesis

  Publication

  • B. J. Trawiński
  • B. Kusz

  - THERMOCHIMICA ACTA - Year 2021

  Reduction in a hydrogen atmosphere of Bi2O3, Sb2O3 and TeO2 mixes oxides for the synthesis of BiSbTe3 was analysed. The reduction reactions of Sb2O3 and Sb2O4 oxides, as well as Bi2O3+Sb2O3 and Sb2O3+3TeO2 mix- tures, were also evaluated. The reduction of Sb2O4 is investigated for the first time. The reactions of the mixed oxides systems also were not the subject of research so far despite being used for synthesis of the (Bi,Sb)2Te3...

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• Analiza porównawcza olejów z pirolizy opon oraz pirolizy biomasy, pod względem użyteczności jako paliwa

  Publication

  • M. Klein
  • M. Klein
  • J. Kluska
  • D. Kardaś

  - Year 2012

  Rosnąca niestabilność na tradycyjnych rynkach paliw kopalnych ożywiła zainteresowanie produkcją paliw alternatywnych z biomasy. Piroliza jest obiecującym procesem dla konwersji biomasy odpadowej w użyteczne paliwo płynne. W niniejszej pracy przedstawiono analizę porównawczą olejów z pirolizy opon oraz pirolizy biomasy, pod względem bezpośredniego wykorzystania jako paliwa. Olej z pirolizy opon został dostarczony przez zakład utylizacji...

• Reclaimed Rubber/Poly(ε‐caprolactone) Blends: Structure, Mechanical, and Thermal Properties

  Publication

  • A. Hejna
  • Ł. Zedler
  • M. Przybysz-Romatowska
  • J. Cañavate
  • X. Colom
  • K. Formela

  - Polymers - Year 2020

  The amount of elastomeric waste, especially from tires is constantly increasing on a global scale. The recycling of these residua should be considered a priority. Compounding the waste rubbers with other polymers can be an excellent alternative to reuse waste materials. This procedure requires solving the issue of the lack of compatibility between the waste rubber particles and other polymers. Simultaneously, there is a claim for...

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• Analiza porównawcza olejów z pirolizy opon oraz pirolizy biomasy, pod względem użyteczności jako paliwa

  Publication

  • M. Klein
  • M. Klein
  • J. Kluska
  • D. Kardaś

  - Year 2012

  Rosnąca niestabilność na tradycyjnych rynkach paliw kopalnych ożywiła zainteresowanie produkcją paliw alternatywnych z biomasy. Piroliza jest obiecującym procesem dla konwersji biomasy odpadowej w użyteczne paliwo płynne. W niniejszej pracy przedstawiono analizę porównawczą olejów z pirolizy opon oraz pirolizy biomasy, pod względem bezpośredniego wykorzystania jako paliwa. Olej z pirolizy opon został dostarczony przez zakład utylizacji...

• Improvement of opipramol base solubility by complexation with β-cyclodextrin

  Publication

  • K. Hemine
  • A. Skwierawska
  • B. Kamińska
  • M. Prześniak-Welenc

  - SUPRAMOLECULAR CHEMISTRY - Year 2018

  Opipramol (OPI), a tricyclic antidepressant and anxiolytic compound, is administered orally in the form of a dihydrochloride. Salt form of the drug has a higher solubility in water and hence bioavailability and stability. A similar effect can be achieved by closing the hydrophobic part of the drug molecule in the cyclodextrin cavity. The paper presents opipramol inclusion complexes with beta-cyclodextrin (β-CD) in 1:1 molar ratio....

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• Physico‐Mechanical Properties and Flammability of PUR/PIR Foams Containing Expandable Graphite Core‐Shell Composite Particles

  Publication

  • K. Gosz
  • J. T. Haponiuk
  • A. D. Mielewczyk-Gryń
  • Ł. Piszczyk

  - POLYMER COMPOSITES - Year 2019

  In this work, polyurethane/polyisocyanurate (PUR/PIR) foams were modified by two types of expandable graphite (EG) core-shell composite particles. The pulverized EG core-shell composite particles were prepared during emulsion polymerization using methyl methacrylate or glycidyl methacrylate for the synthesis of the polymeric shells (poly(methyl methacrylate) (PMMA) and poly (glycidyl methacrylate) (PGMA)), and then the obtained EG_PMMA...

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• Softwood-lignin/natural rubber composites containing novel plasticizing agent: Preparation and characterization

  Publication

  • J. Datta
  • P. Parcheta-Szwindowska
  • J. Surówka

  - INDUSTRIAL CROPS AND PRODUCTS - Year 2017

  Composite materials based on natural rubber were obtained by using glycerolysate (decomposition prod- uct of polyurethane) as a novel plasticizer. In order to determine the effect of various lignin content, four different filler amounts were used, namely, 5 phr (parts per 100 parts of natural rubber) of lignin (WLI5G), 10 phr (WLI10G), 20 phr (WLI20G), and 40 phr (WLI40G). The reference specimen without lignin (WLI0G) was also...

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• Novel Class of Proton Conducting Materials—High Entropy Oxides

  Publication

  • M. Gazda
  • T. Miruszewski
  • D. Jaworski
  • A. D. Mielewczyk-Gryń
  • W. Skubida
  • S. L. Wachowski
  • P. Winiarz
  • K. Dzierzgowski
  • M. S. Łapiński
  • I. Szpunar
  • E. Dzik

  - ACS Materials Letters - Year 2020

  Here, for the first time, we present data on proton conductivity of high-entropy, single-phase perovskites. The BaZr0.2Sn0.2Ti0.2Hf0.2Ce0.2O3−δ, BaZr0.2Sn0.2Ti0.2Hf0.2Y0.2O3−δ, BaZr1/7Sn1/7Ti1/7Hf1/7Ce1/7Nb1/7Y1/7O3−δ, and BaZr0.15Sn0.15Ti0.15Hf0.15Ce0.15Nb0.15Y0.10O3−δ single-phase perovskites were synthesized. Before electrical measurements, materials were characterized using X-ray diffraction (XRD), scanning electron microscopy...

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• Zastosowania wybranych technik analizy termicznej w badaniu tworzyw sztucznych

  Publication

  • E. Głowińska
  • M. Włoch
  • J. Datta
  • J. Namieśnik

  - Analityka: Nauka i Praktyka - Year 2018

  Metody analityczne oparte na wykorzystaniu technik analizy termicznej były i nadal są bardzo popularne i często wykorzystywane w badaniu tworzyw sztucznych. Techniki te pozwalają na określenie właściwości termicznych materiałów polimerowych takich jak np. temperatura zeszklenia, temperatura i ciepło topnienia, temperatura i ciepło krystalizacji oraz ciepło właściwe. Oddziaływanie wysokiej temperatury na polimery może prowadzić...

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• M-BDC (M = Co and/ or Fe) MOFs as effective catalysts for hydrogen generation via hydrolysis of sodium borohydride

  Publication

  • M. Alaide de Oliveira
  • E. Silva Souza
  • J. de Jesus Santana
  • N. Łukasik
  • B. Stefany Lima da Silva
  • B. Silva Barros
  • J. Kulesza

  - APPLIED SURFACE SCIENCE - Year 2023

  Mono- (Co-BDC, Fe-BDC) and bimetallic FeCo-BDC Metal-Organic Frameworks are successfully synthesized by the solvothermal method in DMF at 150 °C within 15 h and tested as catalysts for sodium borohydride hydrolysis. The materials are characterized by FTIR, PXRD, TGA, ICP-OES, H2-TPR, BET model, and SEM-EDS. The catalytic activity of these materials is studied for dehydrogenation of sodium borohydride in water at various temperatures...

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• Preparation and Properties of Thermoplastic Polyurethane Composites Filled with Powdered Buckwheat Husks

  Publication

  • M. Włoch
  • P. Landowska

  - Materials - Year 2022

  Bio-based fillers for the polymer composites are still interesting from the scientific and industrial point of view, due to their low cost and renewable nature. In this work partially green composites were obtained by the mixing of thermoplastic poly(ester-urethane) with the unmodified and modified (by acetylation) grinded buckwheat husks. Obtained biocomposites were characterized in the terms of their chemical structure (FTIR),...

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• The influence of 4,4'-bis(6-hydroxyhexoxy)biphenyl moieties on properties of polyurethanes based on 4,4'-methylenebis(cyclohexyl isocyanate)

  Publication

  • T. Łazarewicz
  • J. T. Haponiuk
  • A. Balas

  - E-POLYMERS - Year 2006

  Zsyntetyzowano dwie serie poliuretanów z 4,4'-bis(6-hydroksyheksyloksy)bifenylu (BH6), poliadypinianu 1,6-heksylenu i diizocyjanianu 4,4'-dicykloheksylometanu o udziałach izomeru trans, wynoszącym odpowiednio 16 i 46%. Badano wpływ udziału wagowego (u) małocząsteczkowego diolu(BH6)w odniesieniu do sumy mas komonomerów diolowych, na właściwości uzyskanych poliuretanów metodami DSC, DTA, TGA, mikroskopii polaryzacyjnej, WAXS, DMTA...

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• Zn(II) and Cd(II) coordination polymers with tri-tert-butoxysilanethiol and bipyridines. Synthesis, crystal structure and spectroscopy

  Publication

  • A. Pladzyk
  • Ł. Ponikiewski
  • N. Stanulewicz
  • Z. Hnatejko

  - OPTICAL MATERIALS - Year 2013

  Trzy nowe silanotiolany cynku(II) I kadmu(II) [Zn{SSi(OtBu)3}2(μ-bpea) •CH3CN]n 1, [Cd{SSi(OtBu)3}2(μ -bpea) •2CHCl3]n 2 oraz [Cd{SSi(OtBu)3}2(μ -bpey)•C7H8]n 3 otrzymane z użyciem pochodnych bipirydylu [bpea = 1,2-bis(4-pyridyl)etan and bpey = 1,2-bis(4-pyridyl)etylen] zostały zsyntetyzowane i strutkualnie scharakteryzowane przy użyciu rentgenografii strukturalnej XRD. Ich budowa krystaliczna została dodatkowo potwierdzona przy...

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• Degradowalne poli(estrouretany) z cykloalifatycznego diizocyjanianu i kopoliestrodioli z L-laktydu i poli(E-kaprolaktono)diolu

  Publication

  • B. Masiulanis
  • A. Radomska
  • J. Żegliński

  - Elastomery - Year 2003

  Opisano syntezę liniowych poli(estrouretanów) (PESU) z 4,4´-diizocyjanianudicykloheksylenometanu, 1,4-butanodiolu i kopoliestrodioli z L-laktydu (LA)i poli(E-kaprolaktono)diolu (PCL, Mn 560g/mol). Kopoliestrodiole o Mn 760,1250 i 3390 g/mol otrzymano przy trzech stosunkach masowych PLA i PCL w obecności oktanianu Sn(II). PESU otrzymane przy różnych stosunkach molowych komponentów scharakteryzowano przez pomiary twardości, wytrzymałości...

• Cellulose Nanofibers Isolated from the Cuscuta Reflexa Plant as a Green Reinforcement of Natural Rubber

  Publication

  • M. Dominic C.D.
  • R. Joseph
  • P. S. Begum
  • M. Joseph
  • D. Padmanabhan
  • L. A. Morris
  • A. S. Kumar
  • K. Formela

  - Polymers - Year 2020

  In the present work, we used the steam explosion method for the isolation of cellulose nanofiber (CNF) from Cuscuta reflexa, a parasitic plant commonly seen in Kerala and we evaluated its reinforcing efficiency in natural rubber (NR). Fourier Transform Infrared Spectroscopy (FTIR), X-Ray Diffraction (XRD), Scanning Electron Microscopy (SEM), Transmission Electron Microscopy (TEM), and Thermogravimetric analysis (TGA) techniques...

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• Influence of microwave treatment conditions of GTR on physico-mechanical and structural properties of NBR/NR/GTR composites

  Publication

  • J. Canavate
  • X. Colom
  • M. Saeb
  • M. Przybysz-Romatowska
  • Ł. Zedler
  • K. Formela

  - AFINIDAD - Year 2019

  The increasing amount of tires used in the industry induces the researchers to find alternatives to the recycling of the end-of-life tires. Several alternatives in order to application of ground tire rubber GTR include their incorporation as a filler in composites. The main issue in this approach is the lack of compatibility between GTR and polymer matrix. In order to solve this problem the devulcanization by microwaves has been...

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• The Effect of Titanium Oxyfluoride Morphology on Photocatalytic Activity of Fluorine-Doped Titanium(IV) Oxide

  Publication

  • M. Kowalkińska
  • J. Karczewski
  • A. Zielińska-Jurek

  - Crystals - Year 2023

  Titanium oxyfluoride (TiOF2) is a metastable product that can be obtained in a fluorine-rich environment. This material can also be a valuable precursor in the synthesis of titanium(IV) oxide (TiO2). However, the effect of TiOF2 morphology on the physicochemical properties of TiO2 has not been studied so far. In this work, single-phase TiOF2 was prepared by a solvothermal method. The as-synthesized samples exhibited a variety of...

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• The effect of hybridization of fire retarded epoxy/flax-cotton fiber laminates by expanded vermiculite: Structure-property relationship study

  Publication

  • M. Barczewski
  • K. Sałasińska
  • W. Raś
  • A. Hejna
  • S. Michałowski
  • P. Kosmela
  • J. Aniśko
  • A. Boczkowska
  • M. Szostak

  - Advanced Industrial and Engineering Polymer Research - Year 2023

  The study describes the hybridization of epoxy/flax-cotton (EP/FF) composites containing ammonium polyphosphate (APP) with micrometric expanded vermiculite (VMT) (1–10 wt%). The efficiency of hybridization of flame retarded epoxy/flax-cotton composites was assessed by performing static tensile and flexural strength evaluation, supplemented by impact strength measurements of the composites. Moreover, thermal and thermomechanical...

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• Bioactive and biodegradable cotton fabrics produced via synergic effect of plant extracts and essential oils in chitosan coating system

  Publication

  • B. Szadkowski
  • M. Śliwka-Kaszyńska
  • A. Marzec

  - Scientific Reports - Year 2024

  Functional antibacterial textile materials are in great demand in the medical sector. In this paper, we propose a facile, eco-friendly approach to the design of antibacterial biodegradable cotton fabrics. Cotton fiber fabrics were enhanced with a chitosan coating loaded with plant extracts and essential oils. We employed Fourier-transform infrared (FTIR) and X-ray photoelectron spectroscopy (XPS), UV–Vis spectrophotometry, optical...

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• Cast polyurethanes obtained from reactive recovered polyol intermediates via crude glycerine decomposition process

  Publication

  • P. Jutrzenka Trzebiatowska
  • I. Deuter
  • J. Datta

  - REACTIVE & FUNCTIONAL POLYMERS - Year 2017

  In this work, the possibility of applying intermediates from polyurethane waste recycling in polyurethane synthesis was presented. Polyurethanes were synthesised in a two-step method using a mixture of petrochemical polyol and glycerolysate, used as a reactive component, 4,4-diphenylmethane diisocyanate (MDI) and 1,4-buthanediol (BD). Glycerolysates were produced during decomposition of polyurethane elastomer by crude glycerine...

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• Oligouretanole otrzymane w wyniku glikolizy pianki poliuretanowej jako półprodukty do wytwarzania lanych elastomerów uretanowych

  Publication

  • J. Datta
  • S. Pasternak

  - Year 2005

  Celem pracy było otrzymanie i zbadanie właściwości oligouretanoli, produktów glikolizy odpadowej pianki poliuretanowej w recyklingu surowcowym oraz uzyskanych z nich lanych elastomerów uretanowych. Lane elastomery uretanowe syntezowano metodą prepolimerową. Prepolimer otrzymywano z 4,4'-diizocyjanianu difenylometanu (MDI) oraz mieszaniny oligouretanomerolu z polieterodiolem o nazwie handlowej Rokopol D2002 i następnie przedłużano...

• Towards sugar-derived polyamides as environmentally friendly materials

  Publication

  • A. Wróblewska
  • A. Zych
  • S. Thiyagarajan
  • D. Dudenko
  • M. R. Hansen
  • C. E. Koning
  • R. Duchateau
  • L. Jasińska-Walc

  - Polymer Chemistry - Year 2015

  As part of our ongoing study investigating isohexide-based polyamides, we have synthesized isosorbide(bis(propan-1-amine)) (DAPIS) and studied its reactivity in the polymerization towards fully biobased polyamides. Polycondensation of nylon salts with various contributions of DAPIS afforded a family of homo- and copolyamides, which were characterized using complementary spectroscopic techniques. The chemical structure of the materials...

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• New ceramic materials derived from pyrolyzed poly(1,2-dimethylsilazane) and starch as a potential anode for Li-ion batteries

  Publication

  • A. Nowak
  • B. Wicikowska
  • A. Lisowska-Oleksiak

  - SOLID STATE IONICS - Year 2014

  Newmaterialswere obtained by pyrolysis of starch (S) and poly(1,2-dimethylsilazane) (PSN) (weight ratio: PSN/S 30/70) at temperature a) 500 °C, b) 700 °C and c) 900 °C. Ceramic materials were characterized by infrared spectroscopy, TGA, Raman spectroscopy and SEM. New Si\O and shifted Si\C stretching vibration modes emerged confirming direct interaction between silicon originating fromsilazane and oxygen coming fromstarch. The...

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• Synthesis, structure and properties of novel poly(hydroxyurethane)s obtained by non-isocyanate route

  Publication

  • M. Włoch

  - Year 2016

  Non-isocyanate polyurethanes (NIPUs) can be synthesized by polyaddition of five-membered bis(cyclic carbonate)s and primary diamines. NIPUs are an alternative for the commonly used (in the form of foams, elastomers, coatings or fibers) in the industry polyurethanes obtained using toxic and moisture sensitive diisocyanates, polyols and low-molecular weight chain extenders. The main aim of this work was to synthesize non-isocyanate...