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7nm，内壁表面厚约1～3nm。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。
The ultra-thin films of pyrrole and polystyrene were deposited on the surfaces of the multi-wall carbon nanotubes （MWNTs） using a plasma polymerization method. The high resolution transmission electron microscopy （HRTEM） images show a 7 nm thickness polymer layer has been uniformly deposited on the outer surface of the MWNTs, 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 matrix, respectively. Transmission electron microscopy （TEM） analysis reveals that the MWNTs coated with the polystyrene are well-dispersed in the polystyrene matrix. The mechanical tests results show that the well-dispersed MWNTs can effectively enhance the tensile strength and modulus of the composites.
出处
《复合材料学报》
EI
CAS
CSCD
北大核心
2007年第3期121-125,共5页
Acta Materiae Compositae Sinica
基金
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)
关键词
等离子体聚合
表面改性
碳纳米管
力学性能
plasma polymerization
surface modification
carbon nanotubes
mechanical properties
