Effect of sodium montmorillonite source on nylon 6/clay nanocomposites

被引:103
作者
Fornes, TD
Hunter, DL
Paul, DR [1 ]
机构
[1] Univ Texas, Dept Chem Engn, Austin, TX 78712 USA
[2] Univ Texas, Texas Mat Inst, Austin, TX 78712 USA
[3] So Clay Prod, Gonzales, TX 78629 USA
关键词
nylon; 6; nanocomposites; montmorillonite;
D O I
10.1016/j.polymer.2004.01.061
中图分类号
O63 [高分子化学(高聚物)];
学科分类号
070305 ; 080501 ; 081704 ;
摘要
The effect of sodium montmorillonite source on the morphology and properties of nylon 6 nanocomposites was examined using equivalent experimental conditions. Sodium montmorillonite samples acquired from two well-known mines, Yamagata, Japan, and Wyoming, USA, were ion exchanged with the same alkyl ammonium chloride compound. The resulting organoclays were extruded with a high molecular weight grade of nylon 6 under the same processing conditions. Quantitative analysis of TEM photomicrographs of the two nanocomposites reveal a slightly larger average particle length and a slightly higher degree of platelet exfoliation for the Yamagata based nanocomposite than the Wyoming version, thus, translating into a higher particle aspect ratio. The stress-strain behavior of the nanocomposites appears to reflect the nanocomposite morphology, in that higher stiffness and strengths are attainable with the increased particle aspect ratio. Moreover, the trends in stiffness behavior between the two types of nanocomposites may be explained by conventional composite theory. (C) 2004 Elsevier Ltd. All rights reserved.
引用
收藏
页码:2321 / 2331
页数:11
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