Effect of cocatalyst on the chain microstructure of polyethylene made with CGC‐Ti/MAO/B(C6F5)3
作者： Daryoosh Beigzadeh , Jo�o B.P. Soares , Thomas A. Duever
DOI: 10.1002/POLA.20151
关键词:
摘要: This investigation studied the solution polymerization of ethylene in Isopar E a semibatch reactor using CGC-Ti as catalyst and methylalumoxane (MAO) tris(pentaflourophenyl)borane [B(C6F5)3] cocatalysts. The effects cocatalyst type amount on chain microstructure were investigated. 13C NMR gel permeation chromatography used to determine long-chain branching (LCB) content molecular weight distribution (MWD), respectively, samples. It was observed that higher concentrations MAO increased LCB decreased polymer. On other hand, increasing B(C6F5)3 lowered content, weight, broadened MWD significantly. We believe this approach can be an efficient way control polyolefins made with these catalytic systems. © 2004 Wiley Periodicals, Inc. J Polym Sci Part A: Chem 42: 3055–3061,
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