Quantitative characterization of clay dispersion in polypropylene-clay nanocomposites by combined transmission electron microscopy and optical microscopy

被引：32

作者：

Xie, Shaobo ^{[1
]}

Harkin-Jones, Eileen ^{[1
]}

Shen, Yucai ^{[1
]}

Hornsby, Peter ^{[1
]}

McAfee, Marion ^{[1
]}

McNally, Tony ^{[1
]}

Patel, Raj ^{[2
]}

Benkreira, Hadj ^{[2
]}

Coates, Phil ^{[2
]}

机构：

[1] Queens Univ Belfast, Sch Mech & Aerosp Engn, Belfast BT9 5AH, Antrim, North Ireland

[2] Univ Bradford, Sch Engn Design & Technol, Bradford BD7 1DP, W Yorkshire, England

来源：

MATERIALS LETTERS | 2010年 / 64卷 / 02期

基金：

英国工程与自然科学研究理事会;

关键词：

Nanocomposites; Transmission electron microscopy (TEM); Optical microscopy; Image analysis; Microstructure; EXFOLIATION;

D O I：

10.1016/j.matlet.2009.10.042

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

This paper presents a novel method to describe the microstructure of polymer/clay nanocomposites quantitatively. Based on the image analyses of transmission electron microscopy (TEM) and optical microscopy micrographs, two parameters, degree of dispersion (chi) and mean interparticle distance per unit volume of clay (lambda(V)) are proposed to describe the level of clay dispersion. The degree of dispersion gives the percentage of exfoliation, and lambda(V) is a measure of spatial separation between particles relative to clay loading. A polypropylene/clay system was chosen as an example to show the effects of processing conditions and biaxial stretching on clay dispersion using the proposed quantifiers. It provides insights into the 'real' clay dispersion using a combination of both microscopical and macroscopical aspects. (C) 2009 Elsevier B.V. All rights reserved.

引用

页码：185 / 188

页数：4

共 9 条

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