Search for dissertations about: "Polyurethanes"

Showing result 1 - 5 of 6 swedish dissertations containing the word Polyurethanes.

  1. 1. Hydrophilic gels based on polyurethane urea

    Author : Ingrid Gustafson; Chalmers University of Technology; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Polyurethanes; pendant double bonds; polymer gels;

    Abstract : .... READ MORE

  2. 2. Towards sugar- and lignin-based polyesters and polyurethanes with enhanced properties

    Author : Niklas Warlin; Centrum för analys och syntes; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; Polyesters; Polyurethane; Bio-based Materials; HMF; Recycling; Vanillin;

    Abstract : The enormous production and consumption of fossil-based plastics has caused severe environmental challenges such as pollution of the ocean, increased CO2-emissions, and various health problems. Many ofthese concerns are intimately connected to the use of fossil fuels in the production of polymers. READ MORE

  3. 3. Amphiphilic Polymers as Additives in Biomedical Polyurethanes. Surface Properties and Morphology

    Author : Maria Kober; Centrum för analys och syntes; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; polymer micelles; phase separation; migration; poly ethylene oxide ; surface enrichment; morphology; polyurethane; additives; Surface modification; amphiphilic polymers; polymer blends; Polymer technology; biopolymers; Polymerteknik;

    Abstract : The aim of this work was to achieve surface modification of two biomedical polyurethanes and one poly(urethane urea) through the addition of small amounts of amphiphilic copolymers in solution. The matrix polymers used were the poly(ether urethane)s Pellethane 2363-80AE (P80) and 2363-75D (P75) and a poly(ether urethane urea) similar to Biomer (PUUR). READ MORE

  4. 4. Lipase-Mediated Syntheses of Trimethylolpropane-Based Biolubricant and Cyclic Carbonate

    Author : Amin Bornadel; Bioteknik; []

    Abstract : Abstract Biocatalysis is considered as benign and efficient alternative to chemical catalysis for organic syntheses. Lipases are the most versatile biological catalysts implemented so far with great potential for production of different chemicals and materials in non-conventional reaction media. READ MORE

  5. 5. Colour-changing textile coatings containing multi-layered mica pigments : an experimental study

    Author : Veronica Malm; Högskolan i Borås; []
    Keywords : ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; Mulit-layered mica pigment; effect pigments; angle-dependent color-changes; textile coatings; surface structure; rheology modifiers; coating parameters; Textile Technology; Textiles and Fashion General ; Textil och mode generell ; angle-dependent colour-changes; multi-layered mica pigment;

    Abstract : This study investigates the possibility of producing angle-dependent colour-changing textiles with thickened polyurethane (PU)-based aqueous dispersion containing multi-layered mica pigments using a direct coating method. Colour changing textile coatings with the latest generation of layered mica pigment (EP) have a promising future for functional purposes such as authentication and aesthetic eye-catching applications. READ MORE