The preparation and properties of the low volume-shrunken organic-inorganic nano-hybrids for dental restoration

• Main Authors: YU-CHAN TSAI, 蔡侑展
• Other Authors: Ying-Gev Hsu
• Format: Others
• Language: zh-TW
• Published: 2010
• Online Access: http://ndltd.ncl.edu.tw/handle/01063905951854417756

碩士 === 國立臺灣科技大學 === 高分子系 === 98 === The methacryloyl group and 3,4-epoxycyclohexyl group containing colloidal nanosilica (CS)─TS and ES, obtained by the reaction of CS with the respective 3-(trimethoxylsilyl)propyl methacrylate and 2-(3,4-epoxycyclohexyl)ethyltrimethoxysilane in the dry THF, were mixed homogeneously with other components such as bis-GMA/TEGDMA (w/w:7/3, GT), EEC (3,4-epoxycyclohexylmethyl(3,4-epoxy)cyclohe- xanecarboxylate), (4-octylphenyl)phenyliodoniumhexafluroantimonate, and camphorquinone according to the different recipes. After removing solvent and degrassing under reduced pressure and the subsequent photo-exposing (λmax : 420 nm), the respective mixtures underwent photopolymerization to afford GT/TS (G-type), EEC/ES (E-type), and IPN-structured GT/TS-EEC/ES (I-type) types of organic-inorganic nano-hybridized dental restorative materials. The conversion of the methacryloyl and 3,4-epoxylcyclohexyl groups after UV exposure and the volume shrinkage of the hybrid during polymerization was assessed by FT-IR spectoscopy and pycnometer, respectively. The hardness, compression strength and thermal stability of the restorative materials were measured and investigated by Durometer, Tensile Tester and TGA.