Rheology of EPR/PP blends

被引:41
|
作者
Mighri, F [1 ]
Huneault, MA [1 ]
Ajji, A [1 ]
Ko, GH [1 ]
Watanabe, F [1 ]
机构
[1] Natl Res Council Canada, Inst Ind Mat, Boucherville, PQ J4B 6Y4, Canada
关键词
polymer blends; EPR; PP; molecular weight; rheology; viscoelasticity; Tsenoglou model;
D O I
10.1002/app.2057
中图分类号
O63 [高分子化学(高聚物)];
学科分类号
070305 ; 080501 ; 081704 ;
摘要
The rheological behavior of polypropylene, PP, ethylene-propylene copolymer, EPR, and EPR/PP blends was studied. Zero-shear viscosity and elastic relaxation time were determined by least-squares fits by using a Carreau-Yasuda model with Arrhenius temperature dependency. The effect of PP and EPR molecular weight, ethylene ratio in EPR copolymer (E/EPR), and EPR concentration on the zero-shear viscosity and elasticity of EPR/PP blends was determined experimentally. Molecular weight effects are compared to theoretically expected relationships. EPR concentration effect and E/EPR ratio effects agree well with predictions made by using the Tsenoglou model. (C) 2001 John Wiley & Sons, Inc.
引用
收藏
页码:2113 / 2127
页数:15
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