Search for dissertations about: "poly urethane urea"

Found 4 swedish dissertations containing the words poly urethane urea.

  1. 1. Biodegradable Thermoplastic Elastomers

    University dissertation from Uppsala : Acta Universitatis Upsaliensis

    Author : Basse Asplund; Uppsala universitet.; [2007]
    Keywords : Chemistry; poly urethane ; poly urethane urea ; biomaterial; biodegradable; polymer; thermoplastic elastomer; haemocomatible; tissue engineering; biocompatible; Kemi;

    Abstract : A novel strategy for synthesising segmented poly(urethane urea) (PUU) without using a chain extender but nevertheless with the opportunity to vary the hard segment content has been developed. The strategy is based on amine formation from isocyanate upon reaction with water. READ MORE

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

    University dissertation from Chemical Engineering 2, Lund University

    Author : Maria Kober; Lund University.; Lunds universitet.; [1997]
    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

  3. 3. Guided Regeneration of the Human Skin in vitro and in vivo studies

    University dissertation from Linköping : Linköping University Electronic Press

    Author : Erika Nyman; Linköpings universitet.; Linköpings universitet.; Region Östergötland.; [2015]
    Keywords : LANTBRUKSVETENSKAPER; AGRICULTURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES;

    Abstract : Every day and in all parts of the world, humans experience different grades of wounding and tissue loss of the skin, thus initiating one of the most complex biological processes. Acute and chronic wounds, as well as the additional problem of skin scarring, involve not only great suffering for the patient but also extensive health care costs for the society. READ MORE

  4. 4. In vitro and in vivo studies on biodegradable matrices for autotransplantation

    University dissertation from Stockholm : Karolinska Institutet, Department of Molecular Medicine and Surgery

    Author : Carl-Johan Gustafson; Karolinska Institutet.; Karolinska Institutet.; [2006]
    Keywords : MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; In vitro; in vivo; dermis; matrix; autotransplantation; culture; keratinocytes; urothelium; tissue engineering; PUUR; macroporous spheres ; guided tissue regeneration;

    Abstract : Tissue engineering (TE), one of the most rapidly growing fields of life science, is an interdisciplinary area in which technical, biological and medical expertise co-fertilize on another with the ultimate aim of restoring, maintaining or improving tissues and/or organs. This purpose links TE closely to research concerning reconstructive plastic surgery. READ MORE