Molecular origins of toughening mechanism in uniaxially stretched nylon 6 films with clay nanoparticles

被引：27

作者：

Yalcin, B. ^{[1
]}

Ergungor, Z. ^{[1
]}

Konishi, Y. ^{[1
]}

Cakmak, A. ^{[1
]}

Batur, C. ^{[2
]}

机构：

[1] Univ Akron, Dept Polymer Engn, Akron, OH 44325 USA

[2] Univ Akron, Dept Mech Engn, Akron, OH 44325 USA

来源：

POLYMER | 2008年 / 49卷 / 06期

关键词：

nylon; 6; nanocomposites; uniaxial stretching; toughening;

D O I：

10.1016/j.polymer.2008.01.046

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

Introduction of nanoplatelets into the nylon matrix preorients the polymer chains in the film plane during melt casting leading to uniplanar (001) texture in nylon 6 crystalline as well as clay phase. This behavior enhances the uniformity of films during cold deformation well above the glass transition temperature by suppressing the localized necking behavior. The clay platelets reduce the polymer interchain hydrogen bonding and entanglements leading to decrease of long range "connectivity". As a result, a delay in strain hardening during deformation occurs allowing much larger deformations to be attained without fracture. This in turn leads to increase in toughness. (c) 2008 Elsevier Ltd. All rights reserved.

引用

页码：1635 / 1650

页数：16

共 68 条

[1] Polymer-layered silicate nanocomposites: Preparation, properties and uses of a new class of materials [J].