Sökning: "PLLA"

Visar resultat 6 - 10 av 20 avhandlingar innehållade ordet PLLA.

1. 6. Bio-based barriers from wood hydrolysates : A pilot-scale approach

   Författare :Soheil Saadatmand; Ulrica Edlund; Youssef Habibi; KTH; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Wood hydrolysate; biorefinery; oxygen permeability; multilayer barriers; food packaging.; vedhydrolysat; syrgaspermeabilitet; barriärskikt; livsmedelsförpackning;

   Sammanfattning : Wood hydrolysates (WHs) are liquids extracted from the hydrothermal treatment of wood. They exist as the byproduct of forestry industries such as the dissolving pulp and fiberboard industries. WHs are hemicellulose-based with a large share of lignin in the chemical composition. LÄS MER

3. 7. Covalent Surface Modification of Degradable Polymers for Increased Biocompatibility

   Författare :Martina Källrot; Ann-Christine Albertsson; Mikael Lindström; KTH; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Vapor phase grafting; covalent surface modification; solvent free; nano patterned topography; degradable polymers; poly ε-caprolactone ; poly L-lactide ; poly lactide-co-glycolide ; poly trimethylene carbonate ; N-vinylpyrrolidone; maleic anhydride; acrylamide; Gasfasympning; kovalent ytmodifiering; lösningsmedelsfri; nedbrytbara polymerer; nanomönstrad topografi; poly L-laktid ; poly ε-kaprolakton ; poly laktid-co-glykolid ; poly trimetylen karbonat ; N-vinylpyrrolidon; maleinsyraanhydrid; akrylamid; Polymer chemistry; Polymerkemi;

   Sammanfattning : Degradable polymers have gained an increased attention in the field of biomedical applications over the past decades, for example in tissue engineering. One way of improving the biocompatibility of these polymers is by chemical surface modification, however the risk of degradation during the modification procedure is a limiting factor. LÄS MER

4. 8. Design of new bioresourcepackaging from wood hydrolysates

   Författare :Soheil Saadatmand; Ulrica Edlund; Monica Ek; KTH; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY;

   Sammanfattning : Hemicelluloses are a large group of polysaccharides that have recently attracted considerable attention in many industrial fields due to their abundance and renewability. They are non-edible and possess very good oxygen-barrier properties. LÄS MER

5. 9. Arthroscopic Bankart reconstruction using different absorbable tacks. The clinical results, radiographic findings and effect on calcaneal bone mineral

   Författare :Anna Elmlund; Göteborgs universitet; []
   Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; shoulder dislocation; arthroscopic; dislocation arthropathy; BMA;

   Sammanfattning : ABSTRACT The aim of the thesis was to explore the clinical and radiographic results after post- traumatic anterior shoulder instability treated with arthroscopic Bankart surgery using absorbable tacks with different compositions. Further aims were to explore possible effects on bone mineral in the heel bone and health-related quality of life after a shoulder-stabilising surgical procedure. LÄS MER

7. 10. Macromolecular synthesis of functional degradable aliphatic polyesters and porous scaffold design

   Författare :Sofia Målberg; Ann-Christine Albertsson; Anders Södergård; KTH; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; functional polyesters; condensation polymerization; L-lactide; ε-caprolactone; triblock copolymer; mechanical properties; porous scaffolds; tissue engineering; ring-opening polymerization; Bi III acetate; creatinine; stannous 2-ethylhexanoate; enzyme; degradation products; Polymer chemistry; Polymerkemi;

   Sammanfattning : There is an increasing demand for new materials in biomedical applications with material properties that are highly specific for each application area. The search for new materials requires the creation of materials with suitable mechanical properties, functionalities, three-dimensional structures and a controlled degradation profile. LÄS MER