Effect of carbon nanofibers on the anisotropy of an aromatic thermotropic liquid crystalline polymer

被引：17

作者：

Lee, S

Kim, MS

Naskar, AK

Ogale, AA ^{[1
]}

机构：

[1] Clemson Univ, Dept Chem Engn, Clemson, SC 29634 USA

[2] Clemson Univ, Ctr Adv Engn Fibers & Films, Clemson, SC 29634 USA

[3] Myongji Univ, Dept Chem Engn, Yongin 449728, Kyunggido, South Korea

来源：

POLYMER | 2005年 / 46卷 / 08期

基金：

美国国家科学基金会;

关键词：

thermotropic liquid crystalline polymers; carbon nanofibers; X-ray diffraction;

D O I：

10.1016/j.polymer.2005.01.058

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 microstructure of a thermotropic liquid crystalline polymer (TLCP, Vectran V400 P) was investigated in the presence of vapor-grown carbon nanofibers. Percolation threshold was observed at similar to 5 wt% carbon nanofibers. During processing, strong flows resulted in severe anisotropy of the semirigid rod-like TLCP molecules. For a given type of flow, however, the nanofibers were found to reduce the overall anisotropy of the TLCP nematic phase in the nanocomposite. We believe that nanofibers provide surface anchoring for the nematic phase that helps disrupt the high degree of molecular order in the TLCP matrix and reduces its anisotropy in the nanocomposite. (c) 2005 Elsevier Ltd. All rights reserved.

引用

页码：2663 / 2667

页数：5

共 23 条

[1] LIQUID-CRYSTAL POLYMER-CARBON FIBER COMPOSITES - MOLECULAR-ORIENTATION [J].