高等学校化学学报2012，Vol.33Issue(8)：1850-1853,4.DOI:10.3969/j.issn.0251-0790.2012.08.038
双(环戊二烯基)二氯化锆催化合成乙烯-笼型倍半硅氧烷杂化共聚物及其结构表征
Synthesis and Properties of Ethylene-polyhedral Oligomeric Silsesquioxane Copolymer with Bis (cyclopentadienyl) Zirconium Dichloride Catalyst
摘要
Abstract
An organic/inorganic hybrid copolymer was prepared with a bis (cyclopentadienyl) zirconium dichloride ( Cp2ZrCl2 ) in conjunction with modified methylaluminoxane (MMAO) cocatalyst. Two kinds of monovinyl substituted polyhedral oligomeric silsesquioxane (POSS) monomers were used to copolymerize with ethylene(E). The copolymers were characterized with !H NMR, DSC, TGA and GPC to know the composition, thermal properties, molecular weight and its distribution, respectively. The comonomer content (POSS) was in the range of 0. 01%—0.30% (molar fraction). With the increase of POSS content in copolymer, the melting temperature and heat of fusion decreased. Thermogravimetric analysis of E/POSS copolymers exhibited an improved thermal stability with a higher degradation temperature and char yields, demonstrating that the inclusion of inorganic POSS nanoparticles made the organic polymer matrix more thermal robust. Increasing the feed ratio of POSS, the molecular weight increased, while the molecular weight distribution broadened.关键词
杂化共聚物/纳米复合材料/乙烯/笼型倍半硅氧烷/双(环戊二烯基)二氯化锆催化剂Key words
Hybrid copolymer/ Copolymerization/ Nanocomposite/ Ethylene/ Polyhedral oligomeric silsesquioxane ( POSS )/ bis ( cyclopentadienyl) zirconium dichloride (Cp2ZrCl2) catalyst分类
化学化工引用本文复制引用
张贺新,张浩,张春雨,郝秀峰,张学全..双(环戊二烯基)二氯化锆催化合成乙烯-笼型倍半硅氧烷杂化共聚物及其结构表征[J].高等学校化学学报,2012,33(8):1850-1853,4.基金项目
国家自然科学基金(批准号:51073067)资助. （批准号:51073067）
