High-shear processing induced homogenous dispersion of pristine multiwalled carbon nanotubes in a thermoplastic elastomer

被引：113

作者：

Li, Yongjin ^{[1
]}

Shimizu, Hiroshi ^{[1
]}

机构：

[1] Natl Inst Adv Ind Sci & Technol, Nanotechnol Res Inst, Tsukuba, Ibaraki 3058565, Japan

来源：

POLYMER | 2007年 / 48卷 / 08期

关键词：

high-shear processing; carbon nanotube; nanocomposite;

D O I：

10.1016/j.polymer.2007.02.066

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

We report a high-shear processing technology that allows the homogenous dispersion of unmodified multiwalled carbon nanotubes (UMWNTs) in a thermoplastic elastomer, poly(styrene-b-butadiene-co-butylene-b-styrene) (SBBS). We demonstrated that the dispersion of UMWNTs in a polymer matrix depends greatly on the shear stress exerted during melt processing. Mechanical tests showed that the tensile modulus, tensile strength and elasticity of the composites with fine nanotube dispersion processed at a high-shear rate are much higher than those of the composites processed at a low shear rate. The results indicated that high-shear processing is an effective method of improving the dispersion of unmodified carbon nanotubes in a polymer matrix. (c) 2007 Elsevier Ltd. All rights reserved.

引用

页码：2203 / 2207

页数：5

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