多壁碳纳米管表面等离子体有机聚合改性

王宏; 李来风; 张浩; 时东陆

多壁碳纳米管表面等离子体有机聚合改性

1.
中国科学院理化技术研究所, 北京 100080;
2.
辛辛那提大学, 美国OH 45221-0012

基金项目: 国家自然科学基金资助项目(50676101); 中科院海外杰出学者基金资助项目(2005-2-9)

详细信息

通讯作者:
李来风,研究员,博士生导师,研究方向为纳米复合材料 E-mail:lfli@cl.cryo.ac.Cn

中图分类号: TB332
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出版历程
- 收稿日期: 2006-07-11
- 修回日期: 2006-11-26
- 刊出日期: 2007-06-14

Surface modif ication of carbon nanotubes by plasma polymerization

1.
Technical Institute of Physics and Chemist ry, CAS, Beijing 100080, China;
2.
Dept . of Chemical and Materials Engineering, University of Cincinnati, Cincinnati OH 45221-0012, USA

摘要

摘要: 采用等离子体聚合技术在多壁碳纳米管(MWNTs) 表面聚合苯乙烯( Styrene) 、吡咯( Pyrrole) 有机膜。高分辨电镜( HRTEM) 分析显示MWNTs 内外表面均生成纳米级厚度的有机膜, 其中外壁表面厚约7 nm , 内壁表面厚约1～3 nm。将经过表面有机膜处理的MWNTs 添加到聚苯乙烯中, 制备出多壁碳纳米管/ 聚苯乙烯(MWNTs/ PS) 复合材料。扫描电镜(SEM) 对MWNTs/ PS 复合材料分析表明, 覆膜的MWNT 在复合材料中的分散得到改善。通过力学拉伸试验测试了MWNTs/ PS 复合材料断裂强度和弹性模量与MWNTs 含量的关系, 证明了经有机覆膜处理的MWNTs 与PS 形成的复合材料的整体强度得到显著提高。
- 等离子体聚合 /
- 表面改性 /
- 碳纳米管 /
- 力学性能
Abstract: The ult ra-thin films of pyrrole and polystyrene were deposited on the surfaces of the multi-wall carbonnanotubes (MWNTs) using a plasma polymerization method. The high resolution t ransmission elect ron microscopy( HRTEM) images show a 7 nm thickness polymer layer has been uniformly deposited on the outer surface of theMWNTs , while an only 1～3 nm polymer layer was deposited on the inner surface. MWNTs coated with polystyrene and uncoated were added into the polystyrene mat rix , respectively. Transmission elect ron microscopy ( TEM)analysis reveals that the MWNTs coated with the polystyrene are well-dispersed in the polystyrene mat rix. The mechanical test s result s show that the well-dispersed MWNTs can effectively enhance the tensile st rength and modulusof the composites.
- plasma polymerization /
- surface modification /
- carbon nanotubes /
- mechanical properties