A method to control the dispersion of carbon black in an immiscible polymer blend

被引：154

作者：

Feng, JY ^{[1
]}

Chan, CM ^{[1
]}

Li, JX ^{[1
]}

机构：

[1] Hong Kong Univ Sci & Technol, Dept Chem Engn, Adv Engn Mat Facil, Hong Kong, Hong Kong, Peoples R China

来源：

POLYMER ENGINEERING AND SCIENCE | 2003年 / 43卷 / 05期

关键词：

D O I：

10.1002/pen.10089

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

The dispersion of carbon black (CB) in an immiscible polymer blend of poly(methyl methacrylate) (PMMA) and polypropylene (PP) was studied as the viscosity of PMMA increased. It was found that the dispersion of carbon black was strongly influenced by the viscosity of PMMA. The CB was dispersed in the PMMA phase when the viscosities of PMMA and PP are comparable, as predicted by Sumita's model. As the viscosity of PMMA increases, the CB was found to be located at the interface between the PMMA and PP phases. On further increase in the viscosity of PMMA, the CB was found to be dispersed in the PP phase. In addition, the CB dispersion in the PP/PMMA blends can significantly influence the positive temperature coefficient (PTC) intensity of the blends.

引用

页码：1058 / 1063

页数：6

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