Toughening of unmodified polyvinylchloride through the addition of nanoparticulate calcium carbonate

被引：84

作者：

Kemal, I. ^{[1
,2
]}

Whittle, A. ^{[3
]}

Burford, R. ^{[2
]}

Vodenitcharova, T. ^{[1
]}

Hoffman, M. ^{[1
]}

机构：

[1] Univ New S Wales, Sch Mat Sci & Engn, Sydney, NSW 2052, Australia

[2] Univ New S Wales, Sch Chem Sci & Engn, Sydney, NSW 2052, Australia

[3] IPLEX Pipelines Australia Pty Ltd, Chipping Norton, NSW 2170, Australia

来源：

POLYMER | 2009年 / 50卷 / 16期

基金：

澳大利亚研究理事会;

关键词：

PVC nanocomposite; Fracture toughness; Finite element analysis; DYNAMIC MECHANICAL-PROPERTIES; TENSILE YIELD STRESS; BEAD FILLED EPOXIES; ULTRAFINE PARTICLES; FRACTURE-TOUGHNESS; GLASSY-POLYMERS; COMPOSITES; NANOCOMPOSITES; POLYPROPYLENE; IMPACT;

D O I：

10.1016/j.polymer.2009.06.028

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

PVC/CaCO3 polymer nanocomposites of differing compositions were produced using a two-roll mill and compression molding. The morphology was observed using transmission electron microscopy, and the static and dynamic mechanical and fracture properties determined. The presence of nanometer-sized CaCO3 particles led to a slight decrease in the tensile strength but improved the impact energy, the storage modulus and the fracture toughness. Fracture surface examination by scanning electron microscopy indicated that the enhanced fracture properties in the nanocomposites were caused by the assisted void formation at the particles. This hypothesis is supported by a microstructure-based finite element modeling based upon elastic-plastic deformation around a weakly bonded particle. Hence, this provides an explanation of both the uniaxial tensile behavior and enhanced toughness of the nanocomposites. (C) 2009 Elsevier Ltd. All rights reserved.

引用

页码：4066 / 4079

页数：14

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