Orientation and interfacial stress transfer of cellulose nanocrystal nanocomposite fibers

被引：29

作者：

Chang, Huibin ^{[1
,2
]}

Luo, Jeffrey ^{[1
,2
]}

Liu, H. Clive ^{[1
,2
]}

Davijani, Amir A. Bakhtiary ^{[1
]}

Wang, Po-Hsiang ^{[1
]}

Kumar, Satish ^{[1
,2
]}

机构：

[1] Georgia Inst Technol, Sch Mat Sci & Engn, Atlanta, GA 30332 USA

[2] Georgia Inst Technol, Renewable Bioprod Inst, Atlanta, GA 30332 USA

来源：

POLYMER | 2017年 / 110卷

关键词：

Two-fold symmetry; Four-fold symmetry; Cellulose nanocrystals; POLARIZED RAMAN-SPECTROSCOPY; WALL CARBON NANOTUBES; ELASTIC PROPERTIES; WHISKERS; MODULUS; WOOD;

D O I：

10.1016/j.polymer.2017.01.015

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

Orientation and interfacial stress transfer in cellulose nanocrystals (CNC) reinforced polyacrylonitrile (PAN) nanocomposite fibers were determined by Raman spectroscopy. The 1095 cm(-1) Raman band was used to quantify the orientation of CNC in composite fiber. Under VV (vertical/vertical) mode, polar plots of all composite fibers showed a two-fold symmetry. Under VH (vertical/horizontal) mode, it showed a four-fold symmetry. The CNCs are highly oriented in the composite fiber, which is confirmed by second and fourth order orientation parameters: < P-2(cos theta)> and < P-4(cos theta)>. The 1095 cm(-1) Raman band shift under uniaxial deformation was used to characterize the interfacial shear stress transfer between PAN matrix and CNCs. (C) 2017 Elsevier Ltd. All rights reserved.

引用

页码：228 / 234

页数：7