Sökning: "Karin Jacobson"
Hittade 3 avhandlingar innehållade orden Karin Jacobson.
1. Oxidation of stressed polymers as studied by chemiluminescence
Sammanfattning : Since the use of chemiluminescence (CL) is known to be avery sensitive technique for studying oxidation of polymers,its potential as a tool for studying the oxidation of stressedpolymers is thoroughly investigated in this thesis. A number ofearlier reports on stress induced chemiluminescence (SCL) showthat SCL has potential for elucidating polymer stressreactions. LÄS MER
2. Computed Tomography of Acetabular Cup Wear and Effect of Surface Roughness on Wear and Oxidation of UHMWPE Hip Prostheses
Sammanfattning : Aseptic loosening is the most common complication in total hip replacement (5- 10% at 10 years follow up). The magnitude of the problem is illustrated by the fact that about one million hip prostheses are implanted worldwide each year. LÄS MER
3. Tuning the polylactide hydrolysis rate without introducing new migrants
Sammanfattning : The possibility to control and tune the hydrolytic degradation rate of polylactide without introducing any new degradation products was investigated by subjecting polylactide with cyclic or linear oligolactic acid additives, and a stereocomplex between the L- and D-enantiomers of polylactide to hydrolytic degradation at 37 and 60 °C for up to 39 weeks. The degradation was monitored by measuring mass loss, molar mass changes, water uptake, changes of surface structure, crystallinity and thermal properties. LÄS MER
