Orientation and interfacial stress transfer of cellulose nanocrystal nanocomposite fibers

被引：28
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
收藏
页码：228 / 234
页数：7
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