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通过苯基三氯硅烷的水解、缩合合成了八苯基倍半硅氧烷(OPS),再经硝化、还原制备了八氨基苯基倍半硅氧烷(OAPS),在此基础上进一步合成了ATRP引发剂BOAPS,并运用FT-IR、NMR对产物的结构进行了表征。采用ATRP方法制备了PMMA/BOAPS杂化聚合物,运用GPC、DSC及TGA手段对杂化材料的结构与热性能进行了分析。结果表明,PMMA杂化物的数均分子量(Mn)为58000,分子量多分散系数为1.12。与分子量相近的线性PMMA相比,PMMA/BOAPS杂化材料的玻璃化转变温度(Tg)提高了约16℃,10%失重时热分解温度升高约64℃。
Octaphenylsilsesquioxane (OPS) was synthesized by the hydrolysis and condensation of phenyltrichlorosilane. Octamidophenylsilsesquioxane (OAPS) was prepared by nitration and reduction. On the basis of this, ATRP initiator BOAPS, and the use of FT-IR, NMR structure of the product was characterized. The ATRP method was used to prepare PMMA / BOAPS hybrid polymers. The structure and thermal properties of the hybrid materials were analyzed by GPC, DSC and TGA. The results showed that the number average molecular weight (Mn) of PMMA hybrid was 58000 and the polydispersity index was 1.12. The glass transition temperature (Tg) of PMMA / BOAPS hybrid material increased by about 16 ℃ compared with that of linear PMMA with similar molecular weight, and the thermal decomposition temperature increased about 64 ℃ at 10% weight loss.