Wyniki wyszukiwania dla: POLYAMIDES - MOST Wiedzy

Wyszukiwarka

Wyniki wyszukiwania dla: POLYAMIDES

Wyniki wyszukiwania dla: POLYAMIDES

  • Novel, Fully Biobased Semicrystalline Polyamides

    Publikacja

    - MACROMOLECULES - Rok 2011

    Novel, semicrystalline polyamides and co(polyamides) were synthesized from biobased sebacic acid (SA), 2,5-diamino-2,5-dideoxy-1,4;3,6-dianhydroiditol (diaminoisoidide, DAII) as well as from 1,4-diaminobutane (DAB), also known as putrescine in nature. Low molecular weight polyamides were obtained by melt polycondensation of the salts based on these monomers or by interfacial polycondensation. In order to increase their molecular...

    Pełny tekst do pobrania w serwisie zewnętrznym

  • Structure and properties of polyamides-epoxidized elastomers blends

    Publikacja
    • R. Steller
    • E. Micewicz
    • W. Meissner
    • J. Pigłowski
    • J. Haponiuk

    - JOURNAL OF APPLIED POLYMER SCIENCE - Rok 2006

    Badano mieszaniny poliamidów alifatycznych (PA6, PA 66, PA 12) zawierające do 15% wag. epoksydowanego elastomeru (statystycznego kopolimeru butadien - styren lub liniowego kopolimeru blokowego styren - butadien - styren). Stwierdzono, że właściwości mechaniczne badanych układów znacząco zależą od czasu mieszania. Oddziaływania w mieszaninach badano poprzez zmiany temepratury zeszklenia. Najbardziej korzystne, ze względu na polepszenie...

    Pełny tekst do pobrania w serwisie zewnętrznym

  • Towards sugar-derived polyamides as environmentally friendly materials

    Publikacja

    - Polymer Chemistry - Rok 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...

    Pełny tekst do pobrania w serwisie zewnętrznym

  • Structure and Molecular Dynamics in Renewable Polyamides from Dideoxy-Diamino Isohexide

    Publikacja

    - MACROMOLECULES - Rok 2012

    The 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...

    Pełny tekst do pobrania w serwisie zewnętrznym

  • An Investigation of Polyamides Based on Isoidide-2,5-dimethyleneamine as a Green Rigid Building Block with Enhanced Reactivity

    Publikacja
    • J. Wu
    • L. Jasińska-Walc
    • D. Dudenko
    • A. Rozanski
    • M. Ryan Hansen
    • D. Van Es
    • C. E. Koning

    - MACROMOLECULES - Rok 2012

    Novel, semicrystalline polyamides and copolyamides were synthesized from a new carbohydrate-based diamine, namely isoidide-2,5-dimethyleneamine (IIDMA). In combination with 1,6-hexamethylene diamine (1,6-HDA) as well as the biobased sebacic acid (SA) or brassylic acid (BrA), the desired copolyamides were obtained via melt polymerization of the nylon salts followed by a solid-state polycondensation (SSPC) process. Depending on the...

    Pełny tekst do pobrania w serwisie zewnętrznym

  • Local Conformation and Cocrystallization Phenomena in Renewable Diaminoisoidide-Based Polyamides Studied by FT-IR, Solid State NMR, and WAXD

    Publikacja
    • L. Jasińska-Walc
    • M. Villani
    • D. Dudenko
    • O. Van Asselen
    • E. Klop
    • S. Rastogi
    • M. Ryan Hansen
    • C. E. Koning

    - MACROMOLECULES - Rok 2012

    Biobased polyamides synthesized from diaminoisoidide (DAII), 1,4-diaminobutane, and sebacic acid are investigated by FT-IR, 13C{1H} magic-angle spinning/cross-polarization (CP/MAS) NMR spectroscopy, and WAXD. Their molecular conformation and mobility undergo distinct changes as a function of temperature and diaminoisoidide content in the compositions. The presence of randomly distributed diaminoisoidide (DAII) in the polyamides...

    Pełny tekst do pobrania w serwisie zewnętrznym

  • - Novel, isohexide-based polyamides; synthesis and characterization

    Projekty

    Kierownik projektu: dr hab. inż. Lidia Jasińska-Walc   Program finansujący: Innowacyjna Gospodarka

    Projekt realizowany w Wydział Chemiczny z dnia 2012-10-09

  • DETERMINATION OF THE HYDROXYL NUMBER OF GROUND TIRE RUBBER PARTICLES VIA MODIFIED TEST METHOD FOR ISOCYANATE GROUPS

    Nowadays, considering the environmental trends and law regulations associated with the circular economy, it is very important to seek for the methods of by-products and waste utilization. The example of such material, which requires the attention and recycling method is ground tire rubber generated during recycling of post-consumer car tires. It can be introduced into various polymer matrices as a filler, but to enhance its effectivity...

    Pełny tekst do pobrania w portalu

  • Novel Biomass-Based Polymers: Synthesis, Characterization, and Application

    Publikacja

    - Rok 2012

    A wide range of polymers were prepared from biomass-derivatives, using different polymerization mechanisms. Well-defined, fully hydroxy-functional polyesters based on aliphatic diols were synthesized, using either conventional metal-based catalysts or the organic superbase 1,5,7-triazabicyclododecene (TBD). Unsaturated polyesters were also made, offering additional functionality to these biobased resins. Metal-catalyzed or enzymatic...

    Pełny tekst do pobrania w serwisie zewnętrznym