马来酸酐
材料科学
化学改性
聚乙烯
碳纤维
碳纳米管
嫁接
表面改性
化学工程
高分子化学
复合材料
共聚物
聚合物
复合数
工程类
作者
Guojian Wang,Ji-qiong Jin
出处
期刊:Carbon
[Elsevier]
日期:2012-07-01
卷期号:50 (8): 3117-3117
标识
DOI:10.1016/j.carbon.2012.02.069
摘要
Multiwalled carbon nanotubes(MWCNTs) were oxidized by an acid mixture(concentrated H2SO4∶HNO3 =3∶1v/v) to form carboxyl groups,which were then reacted with anhydride ethylene diamine by an amidation reaction to introduce amine end groups that were subsequently grafted to polyethylene/maleic anhydride copolymer(PE-g-MA) to increase the dispersion of the modified MWCNTs in a polyethylene(PE) matrix.The chemical modification of the MWCNTs was verified by FTIR,XPS and Raman spectroscopy.The modified MWCNT/PE composites exhibited an electrical percolation threshold at 0.67 vol% MWCNTs.The volume resistivities of the modified MWCNT/PE composites decreased from 1016 to 105 Ω · m with increasing MWCNT content from 0.1 to 1.2 vol%.
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