Micro-mechanisms of deformation in polyethylene/clay micro- and nanocomposites

被引：18

作者：

Stoeffler, Karen ^{[1
]}

Lafleur, Pierre G. ^{[2
]}

Perrin-Sarazin, Florence ^{[1
]}

Bureau, Martin N. ^{[1
]}

Denault, Johanne ^{[1
]}

机构：

[1] CNR, Inst Ind Mat, Quebec City, PQ, Canada

[2] Ecole Polytech Montreal, Dept Chem Engn, Quebec City, PQ, Canada

来源：

COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING | 2011年 / 42卷 / 08期

关键词：

Polymer-matrix composites (PMCs); Particle-reinforcement; Mechanical properties; Microstructures; LOW-DENSITY POLYETHYLENE; VOLUME STRAIN-MEASUREMENTS; MECHANICAL-PROPERTIES; (LLDPE)/CLAY NANOCOMPOSITES; PHYSICAL-PROPERTIES; BARRIER PROPERTIES; CLAY DISPERSION; COMPATIBILIZER; TOUGHNESS; POLYMER;

D O I：

10.1016/j.compositesa.2011.03.020

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Incorporation of clay in polymers is known to improve mechanical properties such as tensile modulus and tensile strength, but to generally decrease elongation at break and toughness. However, recent studies reported an increase in elongation at break for linear low density polyethylene based nanocomposites. In this work, the tensile properties of clay micro- and nanocomposites based on high density polyethylene (HDPE), low density polyethylene (LDPE) and linear low density polyethylene (LLDPE) of similar molecular weights were evaluated. LLDPE micro- and nanocomposites exhibited an extraordinary enhancement in toughness compared to LDPE or HDPE microcomposites. Based on electron microscopy and on acoustic emission and volume strain measurements during tensile testing, micro-mechanisms of deformation in polyethylene/clay micro- and nanocomposites were proposed. Crown Copyright (C) 2011 Published by Elsevier Ltd. All rights reserved.

引用

页码：916 / 927

页数：12

共 30 条

[1] Characterization of volume strain at large deformation under uniaxial tension in high-density polyethylene [J].