Sökning: "poly ethylene glycol"

Visar resultat 21 - 25 av 64 avhandlingar innehållade orden poly ethylene glycol.

1. 21. Thermoresponsive cellulose-based composites by polymer modification

   Författare :Emma Larsson; Anna Carlmark Malkoch; Lian Hutchings; KTH; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Chemical Engineering; Kemiteknik;

   Sammanfattning : The interest in utilizing cellulose based materials has grown rapidly in recent years, due to the growing environmental concerns about utilizing fossil based material. One potential application of cellulose is in thermoresponsive materials, which are attracting attention due to their ability of altering conformation when exposed to changes in external temperature. LÄS MER

3. 22. Effects of Citric Acid on Starch-Based Barrier Coatings

   Författare :Erik Olsson; Lars Järnström; Caisa Johansson; Julien Bras; Karlstads universitet; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Starch; Citric acid; Cross-linking; hydrolysis; Montmorillonite; WVTR; OTR; Barrier properties; Chemical Engineering; Kemiteknik;

   Sammanfattning : With growing environmental concerns, efforts are made to replace petroleum based products with renewable alternatives. This is particularly evident in the packaging industry, where replacing synthetic polymers with renewable materials is of considerable interest. LÄS MER

4. 23. Synthesis and Characterization of Self-Assembling Low Molecular Weight Copolymers for Bioengineering Applications

   Författare :Jenny Fagerland; Anna Finne-Wistrand; Tim Bowden; Natalia Andronova; KTH; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; cooligomers; bioengineerng applications; polymer synthesis;

   Sammanfattning : The constant need for improved biomedical materials and the interest in producing materials with similar properties to the extracellular matrix in different tissues has resulted in increasing interest in research on hydrogels. Over the last decade self-assembling copolymers have been of particular interest since they form hydrogels in response to external stimuli such as temperature. LÄS MER

5. 24. Improved Techniques for Sampling and Sample Introduction in Gas Chromatography

   Författare :Jonas Bonn; Johan Roeraade; Åsa Emmer; Mikael Hedenqvist; KTH; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Gaskromatografi; Provupparbetning; Provintroduktion; Analytical chemistry; Analytisk kemi;

   Sammanfattning : Sampling and sample introduction are two key steps in quantitative gas chromatography. In this thesis, a development of a previously described sampling technique as well as a novel concept for sample introduction in gas chromatography are presented. The thesis is based on two papers. LÄS MER

7. 25. Synthesis of degradable aliphatic polyesters: strategies to tailor the polymer microstructure

   Författare :Jenny Fagerland; Anna Finne-Wistrand; David Kaplan; KTH; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Polymer synthesis; enzymatic synthesis; degradable polyesters; peptides; scaffolds; Chemical Engineering; Kemiteknik;

   Sammanfattning : Key factors for successful tissue engineering are the synthesis and design of the scaffold materials. Aliphatic polyesters have been studied and often used as scaffold materials for tissue engineering. However, their lack of biological cues and degradation under high-temperature processing (e.g. LÄS MER