The Effect Of Glass-Ceramic (Gc) Filled Poly(Methyl Methacrylate) Bone Cement Composites

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dc.contributor.authorSamad, Hamizah Abdul
dc.date.accessioned2018-08-03T02:19:40Z
dc.date.available2018-08-03T02:19:40Z
dc.date.issued2011-06
dc.description.abstractIn this study, a composition of glass-ceramic was fabricated based on the Na2O-CaO-SiO2 glass system and was used as filler in commercial PMMA bone cement (PALACOS LVĀ®). In producing the glass-ceramic powder, firstly the glass powders were analyzed using DSC/TGA and XRF, then it was compacted and heat treated at temperatures between 850 to 1000oC. XRD result of glass-ceramic heat treated at 950oC shows high crystallization of wollastonite (CaSiO3) and sodium calcium silicate, (Na2Ca3Si6O16) in the glass composition. It also exhibits a high bioactivity which formed apatite after soaking in SBF for 7 days. Next, glass-ceramic heat treated at 950oC were used as a filler in the PMMA bone cement with filler loading of 0, 4, 8, 12, or 16 wt% and compared with HA composites. The effect of filler loadings on the setting, mechanical, and thermal properties were evaluated. It is found that the peak temperature and dough time during the polymerization of bone cement decreased with increasing filler loading. However, setting time did not show any significant trend. Result shows the flexural strength and fracture toughness decreased, and the flexural modulus increased as the filler loading increased. Besides, the thermal stability, Tg and storage modulus of cement composite increased with increasing filler loading. Morphological studies of the bioactivity of cement composite revealed the growth of apatite deposited on the GCBC4 and GCBC8 surface sample.en_US
dc.identifier.urihttp://hdl.handle.net/123456789/6157
dc.language.isoenen_US
dc.publisherUniversiti Sains Malaysiaen_US
dc.subjectGlass-ceramic was fabricated based on the Na2O-CaO-SiO2 glass systemen_US
dc.subjectwas used as filler in commercial PMMA bone cementen_US
dc.titleThe Effect Of Glass-Ceramic (Gc) Filled Poly(Methyl Methacrylate) Bone Cement Compositesen_US
dc.typeThesisen_US
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