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

机译:多壁碳纳米管/聚酰亚胺杂化纳米复合材料的制备与表征

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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.
机译:通过将十八烷基异氰酸酯接枝到多壁碳纳米管(MWNT)的表面上使其功能化。通过混合聚酰胺酸/ DMAC溶液和MWNT / DMAC,然后流延薄膜,蒸发和热酰亚胺化,制备改性的MWNT /聚酰亚胺纳米复合材料。 FT-IR用于表征改性的MWNT,聚酰亚胺和杂化膜的结构。 SEM用于观察MWNT /聚酰亚胺纳米复合材料的形态结构。引入DMA来表征聚酰亚胺和杂化膜的T,g,表明随着改性的MWNT的含量的增加,T,g降低。

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