Sökning: "polyolefins"

Visar resultat 1 - 5 av 11 avhandlingar innehållade ordet polyolefins.

  1. 1. Steam Cracking of Polyolefins in Fluidized Bed Systems: Influences of the Bed Materials on the Hydrogen Transfer Reactions

    Författare :Chahat Mandviwala; Chalmers tekniska högskola; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; NATURVETENSKAP; NATURAL SCIENCES; Polyolefins; Plastic waste; Steam Cracking; Hydrogen Transfer; Dual Fluidized Bed;

    Sammanfattning : Plastic materials are crucial to the supply of everyday necessities, such as clothes, packaging, and building materials. Most plastic materials are disposed of after a short period of use due to their low cost of production. The linear use of plastics has resulted in high levels of plastic waste materials. LÄS MER

  3. 2. Effects of Simulated Recycling on Polyolefin Materials

    Författare :Anna Jansson; RISE; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; recycling; oxidation; degradation; polyolefins;

    Sammanfattning : Production and handling of waste is a matter of concern in most countries, and one way to reduce the amount of waste is recycling. Since synthetic polymers are made from non- renewable resources and are used in large amounts, often for short periods of time, they should be recycled in a sustainable society. LÄS MER

  4. 3. Adhesion between paint and modified polyolefins

    Författare :Claes Frennfelt; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; paint TPE materials; functional groups; FTIR-ATR; adhesion; surface modification; EAA; SIMS; ESCA;

    Sammanfattning : .... LÄS MER

  5. 4. Structure and properties of oriented polyolefins

    Författare :Sigurdur Sigurdsson; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY;

    Sammanfattning : .... LÄS MER

  7. 5. Chromatography and extraction techniques for new evaluation methods of polyolefins long-term performance

    Författare :Lina Burman; Ann-Christine Albertsson; Marek Kowalczuk; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Chemical engineering; polymer; chromatographic fingerprinting; gas-chromatography – mass spectrometry; GC-MS; degradable polyethylene; prooxidant systems; chemiluminescence; oxidation; degradation mechanisms; accelerated ageing; antioxidants; transformation products; microwave assisted extraction; MAE; solid-phase microextraction; SPME; volatiles; solid phase extraction; SPE; Kemiteknik; Chemical engineering; Kemiteknik;

    Sammanfattning : Chromatography and extraction techniques, and also chemiluminescence have been utilized to develop new rapid and informative tools in the evaluation of long-term properties and environmental effects of polymeric materials. Methods were developed for classification of materials and for early and rapid degradation detection. LÄS MER