Characterization and prediction of long-chain branching in commercial polyethylenes by a combination of rheology and modeling methods

被引：16

作者：

Chen, Xue ^{[1
]}

Costeux, Chunxia ^{[2
]}

Larson, Ronald G. ^{[1
]}

机构：

[1] Univ Michigan, Dept Chem Engn, Ann Arbor, MI 48109 USA

[2] Dow Chem Co USA, Mat Transformat Grp, Midland, MI 48667 USA

来源：

JOURNAL OF RHEOLOGY | 2010年 / 54卷 / 06期

关键词：

METALLOCENE-CATALYZED POLYETHYLENES; ESSENTIALLY LINEAR POLYETHYLENES; ETHENE/ALPHA-OLEFIN COPOLYMERS; VISCOELASTIC FLOW PROPERTIES; POLYMER MELTS; MOLECULAR-STRUCTURE; ENTANGLED POLYMERS; TUBE MODEL; STAR; REPTATION;

D O I：

10.1122/1.3479044

中图分类号：

O3 [力学];

学科分类号：

070301 [无机化学];

摘要：

By blending commercial long-chain branched polyethylenes, Dow AFFINITY (TM) (trademark of The Dow Chemical Company) PL 1840 Polyolefin Plastomer and Dow AFFINITY (TM) PL 1880 Polyolefin Plastomer, with the linear polyethylenes ExxonMobile Exact 3132 and Exact 3128 of very similar molecular weight and molecular weight distribution, we detect the effect of ultra-low levels of long-chain branching on linear rheological properties and validate a generalized "tube" model (the "hierarchical model") for predicting this effect. (C) 2010 The Society of Rheology. [DOI: 10.1122/1.3479044]

引用

页码：1185 / 1205

页数：21

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