Preparation of ethylene/polyhedral oligomeric silsesquioxane(POSS) copolymers with rac-Et(Ind)2ZrCl2/MMAO catalyst system

Dong Ho Lee, Keun Byoung Yoon, Myung Sung Jung, Jin Ki Sung, Seok Kyun Noh

Research output: Contribution to journalArticlepeer-review

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Abstract

To prepare the organic/inorganic hybrid copolymer, the norbornene derivatives of polyhedral oligomeric silsequioxane(POSS) such as norbornenylethyl-POSS (N-POSS) and dimethyl(norbornenylethyl)silyloxy-POSS(N-Si- POSS) had been copolymerized with ethylene by catalyst system of rac-Et(Ind)2ZrCl2/modified methylaluminoxane(MMAO). The catalytic activity decreased with the feed amount of POSS comonomer, and it was found that the reactivity of N-Si-POSS was larger than that of N-POSS. The unreacted POSS monomer was removed completely by washing the copolymerization product with n-hexane. The melting point of copolymer decreased with POSS content while the thermal stability, especially oxidation stability of copolymer was improved in a great extent relative to conventional polyethylene.

Original languageEnglish
Pages (from-to)53-58
Number of pages6
JournalStudies in Surface Science and Catalysis
Volume161
DOIs
StatePublished - 2006

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