Preparation and properties of propylene/POSS copolymer with rac-Et(Ind)2ZrCl2 catalyst
writer：He-xin Zhang a, Young-jun Shin b, Keun-byoung Yoon a, Dong-ho Lee a,*
keywords：Organic–inorganic hybrid copolymer POSS Copolymerization Nanocomposite
source：期刊
specific source：European Polymer Journal 45 (2009) 40–46
Issue time：2009年
An organic–inorganic hybrid copolymer was prepared by using a C2 symmetric ansa-metallocene catalyst in conjunction with modified methylaluminoxane (MMAO). Two kinds of monovinyl substituted polyhedral oligomeric silsesquioxane (POSS) monomers were used to copolymerize with propylene. A special experiment was carried out in order to confirm the purification of the copolymerization products. The unreacted monomer was completely removed by washing with an n-hexane/ethanol mixture. Thermal properties of the propylene/POSS copolymers exhibited improved thermal stability with higher degradation temperature and char yields, demonstrating that the inclusion of inorganic POSS nanoparticles made the organic polymer matrix more thermally robust.