Sökning: "PLLA"

Visar resultat 1 - 5 av 20 avhandlingar innehållade ordet PLLA.

  1. 1. Modification of polymeric particles via surface grafting for 3D scaffold design

    Författare :Robertus Wahyu Nayan Nugroho; Ann-Christine Albertsson; Orlando J. Rojas; KTH; []
    Nyckelord :NATURAL SCIENCES; NATURVETENSKAP; NATURVETENSKAP; NATURAL SCIENCES; surface grafting; PLA; PLLA; hydrophilic polymers; particles; geometry; steric stabilization; atomic force microscopy AFM ; polyelectrolyte multilayers; 3D scaffold; bone tissue engineering; surface degradation;

    Sammanfattning : Surface modification techniques have played important roles in various aspects of modern technology. They have been employed to improve substrates by altering surface physicochemical properties. LÄS MER

  2. 2. Anterior cruciate ligament reconstruction surgery, aspects of graft choice, graft fixation and bone mineral loss

    Författare :Sven Stener; Göteborgs universitet; Göteborgs universitet; Gothenburg University; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Anterior cruciate ligament; Reconstruction; Revision; PLLA; Bone mineral areal mass; DEXA;

    Sammanfattning : The aim of this thesis was to measure bone mineral changes in the calcanei, hips and lumbar spine of patients reconstructed with bone-patellar tendon-bone (BPTB) or hamstring tendon (HT) autografts following anterior cruciate ligament (ACL) injury. Furthermore, the aim was to compare the clinical results after ACL revision reconstruction with either reharvested ipsilateral or contralateral BPTB autografts. LÄS MER

  3. 3. Nanoparticles for multifunctional drug delivery systems

    Författare :Jian Qin; Mamoun Muhammed; Paavo K J Kinnunen; KTH; []
    Nyckelord :NATURAL SCIENCES; NATURVETENSKAP; NATURVETENSKAP; NATURAL SCIENCES; drug delivery; stimuli-sensitive; SPION; PLLA; PNIPAAm; gold; MRI; cytotoxicity; Pluronic; phase transfer; Materials chemistry; Materialkemi;

    Sammanfattning : Multifunctional drug delivery systems incorporated with stimuli-sensitive drug release, magnetic nanoparticles and magnetic resonance (MR) T2 contrast agents is attracting increasing attention recently. In this thesis, works on polymer nanospheres response to temperature change, superparamagnetic iron oxide nanoparticles (SPION)/polymeric composite materials for MR imaging contrast agents are summarized. LÄS MER

  4. 4. Processability and properties of poly (L-lactide) based fibers

    Författare :Victoria Taubner; Chalmers University of Technology; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; thermal degradation; PLA; poly lactic acid ; fibre; poly L-lactide ; moist; melt spinning; PLLA; extrusion;

    Sammanfattning : .... LÄS MER

  5. 5. Covalent Vapor-Phase Grafting of Degradable Polymers

    Författare :Martina Källrot; Ann-Christine Albertsson; Maria Nowokowska; KTH; []
    Nyckelord :NATURAL SCIENCES; NATURVETENSKAP; NATURVETENSKAP; NATURAL SCIENCES; Vapor-phase grafting; covalent surface modification; functionalization; solvent-free grafting; sub-micron patterned topography; scaffolds; degradable polymers; poly L-lactide ; poly ε-caprolactone ; poly trimethylene carbonate ; poly L-lactide-co-glycolide ; poly 1; 5-dioxepan-2-one-co-L-lactide ; poly ε-caprolactone-co-L-lactide ; N-vinylpyrrolidone; maleic anhydride; acrylamide; acrylic acid; hyaluronic acid; in vitro degradation; Gasfasympning; kovalent ytmodifiering; funktionalisering; lösningsmedelsfri ympning; sub-micrometer mönstrad topografi; nedbrytbara polymerer; poly L-laktid ; poly ε-kaprolakton ; poly trimetylen karbonat ; poly L-laktid-co-glykolid ; poly 1; 5-dioxepan-2-one-co-L-laktid ; poly ε-kaprolakton-co-L-laktid N-vinylpyrrolidon; maleinsyraanhydrid; akrylamid; akrylsyra; hyaluronsyra; in vitro nedbrytning; Polymer chemistry; Polymerkemi;

    Sammanfattning : Gasfasympning är en del i den moderna strategin för optimering av den molekylära designen av biomaterial. Kovalent ytmodifiering med hydrofila vinylmonomerer och koppling med bioaktiva grupper används för att öka biokompatibiliteten och bioaktiviteten hos biomaterialen.. LÄS MER