Preparation and Characterization of Multi-walled Carbon Nanotubes/polyimide Hybrid Nanocomposites

摘要：

Multi-walled carbon nanotubes (MWNTs) were functionalized via grafting octadecyl isocyanate on the surface of MWNTs. The modified MWNT/ polyimide nanocomposites were prepared by mixing poly (amic acid)/ DMAC solution and the MWNT/ DMAC, and followed by casting film, evaporation and thermal imidization. FT-IR was employed to characterize the structure of modified MWNTs, polyimides and the hybrid films. SEM was used to observe the morphological structure of the MWNT/ polyimide nanocomposites. DMA was introduced to characterize the T<,g> of polyimide and the hybrid films, indicating that T<,g> decreased with the content of the modified MWNTs increasing.

关键词： polyimide multi-walled carbon nanotubes octadecyl isocyanate glass temperature

作者: LI Jing ZHANG Qinghua CHEN Dajun

作者单位: State Key Laboratory of Chemical Fibers and Polymer Materials, College of Materials Science and Engineering, Donghua University, Shanghai 201620, P. R. China

会议类型: 国际会议

会议名称: 2007年先进纤维与聚合物国际会议

会议地点: 上海

会议语种:英文

页码: 1013-1015

在线出版日期: 2007-10-15（万方平台首次上网日期，不代表论文的发表时间）