Rheological and mechanical properties of surface modified multi-walled carbon nanotube-filled PET composite

被引：142
作者：
Jin, Sang Hyun
Park, Young-Bin
Yoon, Kwan Han
机构：
[1] Kumoh Natl Inst Technol, Dept Polymer Sci & Engn, Gyeongbuk 730701, South Korea
[2] Coll Engn, Dept Ind & Mfg Engn, FAMU FSU, Tallahassee, FL 32310 USA
来源：
COMPOSITES SCIENCE AND TECHNOLOGY | 2007年 / 67卷 / 15-16期
关键词：
polymer matrix composites (PMCs); nanostructures; mechanical properties; Raman spectroscopy; scanning electron microscopy (SEM);
D O I：
10.1016/j.compscitech.2007.03.013
中图分类号：
TB33 [复合材料];
学科分类号：
摘要：
Poly(ethylene terephthalate) (PET)/multi-walled carbon nanotube (MWCNT) composites were prepared by in situ polymerization. To improve the dispersion of MWCNTs in PET matrix, the surface modified MWCNTs having acid groups (acid-MWCNT) and diamine groups (diamine-MWCNT) were used. The functional groups on the surface of modified MWCNTs were confirmed by infrared (IR) spectrometry. SEM analysis showed better dispersion of diamine-MWCNTs as compared to pristine-MWCNTs and acid-MWCNTs in the PET. The reaction between PET and diamine-MWCNTs was evidenced by the shifting of the G band to a higher frequency in Raman spectroscopy and an increase of the complex viscosity in rheological properties. The composites containing functionalized MWCNTs showed a large increase in the tensile strength and modulus. The PET/diamine-MWCNT composites showed maximum tensile strength and modulus increases by 350% and 290% at 0.5 and 2.0 wt%, respectively, as compared to pure PET. (C) 2007 Elsevier Ltd. All rights reserved.
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页码：3434 / 3441
页数：8
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