Influence of coupling agents on melt flow behavior of natural fiber composites

被引：42

作者：

Hristov, Velichko ^{[1
]}

Vlachopoulos, John ^{[1
]}

机构：

[1] McMaster Univ, Dept Chem Engn, Hamilton, ON L8S 4L7, Canada

来源：

MACROMOLECULAR MATERIALS AND ENGINEERING | 2007年 / 292卷 / 05期

关键词：

composites; coupling agents; rheology; wall slip; wood fibers;

D O I：

10.1002/mame.200600459

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The influence of coupling agents on the melt rheological properties of natural fiber composites has been investigated in this work using capillary and rotational rheometers. Scanning electron microscopy was also employed to supplement the rheological data. It was found that molecular weight and molecular weight distribution of the polymer matrix and coupling agent characteristics influence the filler wetting and the melt flow properties of the filled composites. Generally, low molecular weight and narrow molecular weight distribution polyethylene matrix provides relatively larger increase of the viscosity of the composites Coupling. agents tend to increase the resistance to shearing, but wall slip effects may interfere with the measured values, especially at very high filler loadings. Entrance pressure loss in capillaries is also influenced by polymer matrix and coupling agent used.

引用

页码：608 / 619

页数：12

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