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Wyniki wyszukiwania dla: CYCLODEXTRIN POLYMERS
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Preparation of Well-Compatibilized PP/PC Blends and Foams Thereof
PublikacjaThe performance of polypropylene-poly(ethylene brassylate) block and graft copolymers and a polypropylene-polycaprolactone graft copolymer as compatibilizers for polypropylene-rich polypropylene/bisphenol A polycarbonate (PP/PC, 80/20 wt/wt) blends was elucidated. The copolymers were synthesized either by metal-catalyzed ring-opening polymerization or transesterification of a presynthesized polyester, initiated by hydroxyl-functionalized...
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Impedance Evaluation of the Effect of Ru[sub 0.3]Ti[sub 0.7]O[sub 2] on Electrochemical Properties of Polymeric Conducting Electrodes Used in Cathodic Protection
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Studying of spin-coated oxad-Si properties
PublikacjaPurpose: The major aim of this paper was describing technical conditions of polymer thin film deposition byspin-coating techniques.Design/methodology/approach: Thin films of about nanometres thickness were prepared by spin-coatingand their properties were studied. As a material for preparing polymer thin films oxad-Si was used. The thinfilms were deposited with various spinning velocity from solution of different concentration....
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Agnieszka Ubowska dr hab. inż.
OsobyDr hab. inż. Agnieszka Ubowska, prof. ZUT urodziła się w 1978 r. w Pile, gdzie ukończyła Technikum Ochrony Środowiska. W latach 1998-2003 studiowała na Wydziale Technologii i Inżynierii Chemicznej Politechniki Szczecińskiej na kierunku ochrona środowiska. Stopień doktora nauk technicznych uzyskała w 2008 r., broniąc na Wydziale Technologii i Inżynierii Chemicznej Politechniki Szczecińskiej pracę pt. „Hybrydowe hydrofilowe (ko)polimery...
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Biopolymers and Their Composites for Drug Delivery: A Brief Review
PublikacjaIn recent years, excipient development has become a core area of research in pharmaceutical drug delivery because it influences the formulation development and drug delivery process in various ways. Polymeric drug delivery systems have been of great interest for controlled delivery as they show the great advantage in drug delivery systems because of optimized drug loading and releasing property. Then, the side effects of synthetic...
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Selected biotrends in development of epoxy resins and their composites
PublikacjaEpoxy resins and their fibre or particulate composites are widely used in various industries, including building, naval, aircraft, automotive and aerospace. Modern polymer science and technology focus on the development of green polymers and composites. There are two major areas of interest in the case of epoxy resins: the development of bio-based resins and the production of composites with natural fibers. One of the most interesting...
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Pervaporation Zeolite-Based Composite Membranes for Solvent Separations
PublikacjaThanks to their well-defined molecular sieving and stability, zeolites have been proposed in selective membrane separations, such as gas separation and pervaporation. For instance, the incorporation of zeolites into polymer phases to generate composite (or mixed matrix) membranes revealed important advances in pervaporation. Therefore, the goal of this review is to compile and elucidate the latest advances (over the last 2-3 years)...
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THE IMPACT OF GROUND TIRE RUBBER TREATMENT ON THE THERMAL CONDUCTIVITY OF FLEXIBLE POLYURETHANE/GROUND TIRE RUBBER COMPOSITES
PublikacjaWaste car tires are burdensome waste, and their utilization is crucial for the natural environment. In many countries, the primary method of their recycling is energy recovery, performed by simple combustion. However, material recycling is much more effective and significantly more beneficial for the natural environment. It results in the generation of ground tire rubber, which can be used to produce polymerrubber composites. It...
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Nonlinear viscoelasticity in Three Dimensional filler reinforced rubber composites and nanocomposites
PublikacjaThis chapter describes the influence of three-dimensional nanofillers used in elastomers on the nonlinear viscoelastic properties. In particular, this part focuses and investigates the most important three-dimensional nanoparticles, which are used to produce rubber nanocomposites. The rheological and the dynamic mechanical properties of elastomeric polymers, reinforced with spherical nanoparticles, like POSS, titanium dioxide and...
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Semicrystalline Polyesters Based on a Novel Renewable Building Block
PublikacjaIsohexides, like e.g. isosorbide, are well-known carbohydrate-based rigid diols which are capable of dramatically increasing the glass transition temperature of polyesters. However, their relatively low reactivity has thus far hampered large-scale industrial applications in the polymer field. Recently, with the aim to increase reactivity while at the same time retain rigidity, we have developed a new isoidide dicarboxylic acid...
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Commercially produced and modified starches
PublikacjaThis book presents some fascinating phenomena associated with the remarkable features of high performance polymers and also provides an update on applications of modern polymers. It offers new research on structure–property relationships, synthesis and purification, and potential applications of high performance polymers. The collection of topics in this book reflects the diversity of recent advances in modern polymers with a broad...
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Adsorption-assisted transport of water vapour in super-hydrophobic membranes filled with multilayer graphene platelets
PublikacjaThe effects of confinement of multilayer graphene platelets in hydrophobic microporous polymeric membranes are here examined. Intermolecular interactions between water vapour molecules and nanocomposite membranes are envisaged to originate assisted transport of water vapour in membrane distillation processes when a suitable filler-polymer ratio is reached. Mass transport coefficients are estimated under different working conditions,...
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Polimery Przewodzące
Kursy OnlinePrzedmiot Polimery Przewodzące przeznaczony jest dla studentów 3 semestru II stopnia studiów kierunku Inżynieria Materiałowa. Przedmiot obejmuje 15 h wykładu 15 h laboratorium Podstawowa pomoc to skrypt, intrukcje do ćwiczeń laboratoryjnych, literatura
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Catalysis, process design and industrial production of polymers
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Structure and Molecular Dynamics in Renewable Polyamides from Dideoxy-Diamino Isohexide
PublikacjaThe chemical structure, the conformation, andthe flexibility of the polymer chain fragments present in thepolyamides synthesized from 2,5-diamino-2,5-dideoxy-1,4;3,6-dianhydrosorbitol, 1,4-diaminobutane, and either sebacic orbrassylic acid have been studied by liquid-state 2D NMRspectroscopy viz. correlation spectra (COSY) and heteronuclearmultiple-bond correlation spectra (gHMBC), by 13Ccross-polarization/magic-angle spinning...
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TH-D-BRB-06: Assessment of Proton Beam In-Vivo Dose Verification by Directly Comparing Doses Measured in Tissue-Equivalent Polymer Gels to Proton-Activated Positron-Emission Distributions in the Gels Post Irradiation
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Efficient Recovery of Noble Metal Ions (Pd2+, Ag+, Pt2+, and Au3+) from Aqueous Solutions Using N,N'-Bis(salicylidene)ethylenediamine (Salen) as an Extractant (Classic Solvent Extraction) and Carrier (Polymer Membranes)
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La 0.6 Sr 0.4 Co 0.2 Fe 0.8 O 3-δ oxygen electrodes for solid oxide cells prepared by polymer precursor and nitrates solution infiltration into gadolinium doped ceria backbone
PublikacjaInfiltration is a method, which can be applied for the electrode preparation. In this paper oxygen electrode is prepared solely by the infiltration of La0.6Sr0.4Co0.2Fe0.8O3‐δ (LSCF) into Ce0.8Gd0.2O2-δ (CGO) backbone. The use a polymer precursor as an infiltrating medium, instead of an aqueous nitrate salts solution is presented. It is shown that the polymer forms the single-phase perovskite at 600 °C, contrary to the nitrates...
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Detection of Helicobacter rodentium-like DNA in the liver tissue of patients with chronic liver diseases by polymerase chain reaction–denaturing gradient gel electrophoresis and DNA sequence analysis
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Stabilization and Early Degradation of UV-Irradiated Heterophasic Propylene−Ethylene Copolymers Based on ESR, ESR Imaging, UV−Vis, and DSC: Effect of Ethylene Content and UV Wavelength
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Statyczne i dynamiczne badania własności masy polimerowej
PublikacjaPolimer jest materiałem, który coraz częściej znajduje zastosowanie w budownictwie w przypadku konstrukcji narażonych na wpływy dynamiczne. Poprzez dodanie do składu polimeru odpowiednich składników możliwe jest otrzymanie materiału o specjalnych parametrach, np. o zwiększonym tłumieniu. Od kilku lat masa polimerowa stosowana jest w tzw. metodzie złączy podatnych. Potwierdzono również jej efektywność w zastosowaniu do elementów...
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Simple synthesis route for fabrication of protective photo‐crosslinked poly(zwitterionic) membranes for application in non‐enzymatic glucose sensing
PublikacjaThis work focuses on the fabrication of non-enzymatic glucose sensing materials based on laser-formed Au nanoparticles embedded in Ti-textured substrates. Those materials possess good catalytic activity toward glucose oxidation in 0.1 × phosphate buffered saline as well as resistance to some interferants, such as ascorbic acid, urea, and glycine. The electrodes are further coated with three different polymers, that is, Nafion,...
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Recycled Polyurethane as a Second Phase in Thermoset Blends and Its Effect on Thermal Degradation Kinetics Studies
PublikacjaA new approach is introduced in the modification of thermosetting polymer by using different amount of polyurethane of waste origin. The post consumer polyurethane foam coatings are degraded using glycolysis process and the recycled product is further converted into new polyurethane. The blending of recycled polyurethane with epoxy exhibits transparency and produces nanostructures. The effective interaction between two polymers...
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A novel method of creating thermoplastic chitosan blends to produce cell scaffolds by FDM additive manufacturing
PublikacjaDue to its remarkable and promising biological and structural properties, chitosan has been widely studied in several potential applications in the biomedical sector. Attempts are being made to use this polymer and its properties in thermoplastics dedicated to 3D printing in FDM technology. However, chitosan can be processed only from acid solution, which limits its applications. The paper presents a new path for the production...
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Laminaty FRP w budownictwie - charakterystyka materiału i aspekty projektowania
PublikacjaW artykule przedstawiono charakterystykę laminatów polimerowych wzmacnianych włóknami. W pierwszej części zaprezentowano teoretyczne modele materiałowe, podstawowe zależności naprężenie-odkształcenie włókien, matrycy oraz laminatu powstałego przez połączenie obydwu składników. Na tej podstawie sformułowano zalecenia dotyczące praktycznego wykorzystania laminatu w kontekście jego wytężenia w projektowaniu elementów konstrukcyjnych....
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Anion–cation interactions in a series of salts with substituted Hphen, Hbpy and H2bpy cations and [W(CN)8]4− anion: polymer with “super-short” N–H⋯N hydrogen bridges containing exclusively anions and H+
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Przemysław Gnatowski mgr inż.
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Catena-Poly[[(tetrahydrofuran-[kappa]O)lithium(I)]-bis([mu]-trimethylsilanolato-[kappa]2O:O)-gallium(III)-bis([mu]-trimethylsilanolato-[kappa]2O:O)-[(tetrahydrofuran-[kappa]O)lithium(I)]-[mu]-bromido]
PublikacjaThe title chain polymer compound, [GaLi2Br(C3H9OSi)4(C4H8O)2]n, was obtained in the reaction of GaBr3 with Me3SiOLi in toluene/tetrahydrofuran. The GaIII atom, located on a twofold rotation axis, is coordinated by four trimethylsilanolate ligands and has a distorted tetrahedral geometry. The LiI atom is four coordinated by one bridging Br atom located on an inversion centre, two trimethylsilanolate ligands and one tetrahydrofurane...
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Optical properties of polyazomethine with oxygen atom in the backbon
PublikacjaPurpose: The aim of this paper is to show results of optical measurement performed on poly –(1-(4-methylenephenoxy-1)phenylene-4-methylene-1.4-phenylnenitrylomethylene) (PPI2) polyazomethine thinfilms and to compare with poly - (1.4-phenylenemethylenenitrilo-1.4 phenylenenitrilomethylene) (PPI).Design/methodology/approach: Influence of oxygen atom in the polymer chain on optical properties ofpolyazomethine was investigated....
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Interactions of fish gelatin and chitosan in uncrosslinked and crosslinked with EDC films: FT-IR study
PublikacjaFilms based on fish gelatin, chitosan and blend of fish gelatin and chitosan before and after cross-linking with EDC have been characterized by FT-IR spectroscopy. The FT-IR spectrum of fish gelatin film showed the characteristic amide I, amide II and amide III bands, and the FT-IR spectrum of chitosan film confirmed that the polymer was only a partially deacetylated product, and included CH3-C=O and NH2 groups, the latter both...
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Advancing sustainable hybrid bitumen systems: A compatibilization solution by functionalized polyolefins for enhanced crumb rubber content in bitumen
PublikacjaPolymer waste pollution has a profound effect on the environment and, consequently, on the lifestyle of hu- mankind. The massive production and disposal of cross-linked polymers clearly exemplify the challenges of recycling. Increasing efforts are being undertaken to introduce recycled polymers, especially crumb rubber (CR), into asphalt formulations. Due to the rather poor processability and phase separation associated with CR- modified...
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Tailoring electronic structure of polyazomethines thin films
PublikacjaPurpose: The aim of this work is to show how electronic properties of polyazomethine thin films deposited bychemical vapor deposition method (CVD) can be tailored by manipulating technological parameters of pristinefilms preparation as well as modifying them while the as-prepared films put into iodine atmosphere.Design/methodology/approach: The recent achievements in the field of designing and preparation methods tobe used while...
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Effects of Basalt and Carbon Fillers on Fire Hazard, Thermal, and Mechanical Properties of EPDM Rubber Composites
PublikacjaDue to growing restrictions on the use of halogenated flame retardant compounds, there is great research interest in the development of fillers that do not emit toxic compounds during thermal decomposition. Polymeric composite materials with reduced flammability are increasingly in demand. Here, we demonstrate that unmodified graphene and carbon nanotubes as well as basalt fibers or flakes can act as effective flame retardants...
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Przegląd rodzajów chiralnych faz stacjonarnych oraz możliwości ich zastosowań w chromatografii cieczowej
PublikacjaChromatograficzne rozdzielanie związków optycznie czynnych ma ogromne znaczenie nie tylko w przemyśle farmaceutycznym, ale i agrochemicznym, a także w badaniach naukowych różnego rodzaju. W niniejszym opracowaniu scharakteryzowano komercyjnie dostępne chiralne fazy stacjonarne na bazie, cyklodekstryn, polisacharydów, makrocyklicznych antybiotyków, eterów koronowych, a także fazy proteinowe, ligandowymienne, jonowymienne oraz fazy...
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Polimery Przewodzące 2022
Kursy OnlinePrzedmiot Polimery Przewodzące przeznaczony dla studentów II st Inżynierii Materiałowej, sem 3.
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Polimery Przewodzące 2023
Kursy OnlinePrzedmiot przeznaczony dla studentów II st. Inżynierii materiałowej
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Polimery przewodzące- laboratorium
Kursy OnlineLaboratorium Polimery Przewodzące, grupa I, grupa II, 15h semestr letni 2020/2021 prowadzący: dr inż. Mariusz Szkoda, mgr inż. Mariusz Wtulich - Doktorant
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Polimery Przewodzące 2024
Kursy OnlinePrzedmiot Polimery Przewodzące przeznaczony dla studentow II stopnia Inżynierii Materiałowej Kurs zawiera materiały do wykładu i instrukcje do ćwiczeń laboratoryjnych oraz sprawozdania studenckie.
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Modyfikacja biodegradowalnych poliestrów alifatycznych za pomocą inicjatorów nadtlenkowych
PublikacjaCzynniki ekologiczne, ekonomiczne oraz większa świadomość społeczeństwa wpływają korzystnie na dynamiczny rozwój bio- degradowalnych materiałów, które sukcesywnie zastępują polimery „konwencjonalne”. Biodegradowalne polimery zarówno ze źródeł odnawialnych, jak i nieodnawialnych wzbudzają duże zainteresowanie wielu jednostek naukowo-badawczych oraz firm, głównie w zakresie ich modyfikacji. W pracy przedstawiono wyniki badań wpływu...
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Katarzyna Merkel dr hab.
OsobyOver the past 15 years, my work has mainly been related to the study of liquid crystal compounds with a diverse structure (discotic, dendrimeric, banana, bimedogenic, uniaxial and biaxial nematics and smectics) as well as polymeric materials (biopolymers, nano-composites) and biological materials. My work concerned mainly the issues of organization, observation of orientation effects, studying the dynamics of molecular processes...
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Application of Headspace Solid-phase Microextraction with Poly(1-vinyl-3- Hexylimidazolium Chloride) Polymeric Ionic Liquid Coating using GC - MS to Determine Volatile Fatty Acids in Dairy Wastewater
PublikacjaVolatile fatty acids were determined in this study using headspace solid-phase microextraction (HS-SPME) with a poly(1-vinyl-3-hexylimidazolium chloride) polymeric ionic liquid coated fiber followed by gas chromatography - mass spectrometry. Experimental parameters such as extraction time and temperature, sample volume as well as desorption time and temperature were optimized. Detection limits of the method were in the range of...
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Molecular dynamics studies of polyurethane nanocomposite hydrogels
PublikacjaPolyurethane PEO-based hydrogels have a broad range of biomedical applicability. They are attractive for drug-controlled delivery systems, surgical implants and wound healing dressings. In this study, a PEO based polyurethane hydrogels containing Cloisite R 30B, an organically modified clay mineral, was synthesized. Structure of nanocomposite hydrogels was determined using XRD technique. Its molecular dynamics was studied by means...
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OBTAINING OF COUMARONE-INDENE RESINS BASED ON LIGHT FRACTION OF COAL TAR 3. COUMARONE-INDENE RESINS WITH METHACRYLIC FRAGMENTS
PublikacjaThe method for obtaining coumarone-indene resins with methacrylic fragments (CIRM) was developed with the addition of methyl ethacrylate, using a light fraction of coal tar and its fraction boiling within 423–463 К. CIRM was obtained via radical cooligomerization using 2,2'-azobis (2-methyl-propionitrile) as the initiator. The effect of the initiator amount, temperature and reaction time on the yield, softening temperature and...
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Ecological Aspects of Polymer Package Recycling
Kursy OnlineEcological Aspects of Polymer Package Recycling dr hab. inż. Justyna Kucińska-Lipka
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Supramolecular deep eutectic solvents and their applications
PublikacjaIn recent years, the growing awareness of the harmfulness of chemicals to the environment has resulted in the development of green and sustainable technologies. The compromise between economy and environmental requirements is based on the development of new efficient and green solutions. Supramolecular deep eutectic solvents (SUPRADESs), a new deep eutectic solvent (DES) subclass characterized by inclusion properties, are a fresh...
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Lignocellulosic Biomass from Grapevines as Raw Material for Particleboard Production
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Variable Temperature Spectroscopic Ellipsometry as a Tool for Insight into the Optical Order in the P3HT:PC70BM and PC70BM Layers
PublikacjaTwo combined ellipsometric techniques—variable angle spectroscopic ellipsometry (VASE) and variable temperature spectroscopic ellipsometry (VTSE)—were used as tools to study the surface order and dielectric properties of thin films of a poly(3-hexylthiophene-2,5-diyl) (P3HT) mixture with a fullerene derivative (6,6-phenyl-C71-butyric acid methyl ester) (PC70BM). Under the influence of annealing, a layer of the ordered PC70BM...
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An Approach to Testing Antivandal Composite Materials as a Function of Their Thickness and Striker Shape—A Case Study
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Analysis of the Resistance Change of Chemosensitive Layers to the Presence of Ammonia Vapors under Variable Conditions of Air Temperature and Humidity
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Change in the Low-Cycle Performance on the 3D-Printed Materials ABS, ASA, HIPS, and PLA Exposed to Mineral Oil
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