Synthesis and Characteristics of Multi-Walled Carbon Nanotubes-Polyimide Nanocomposite Films

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Title:	Synthesis and Characteristics of Multi-Walled Carbon Nanotubes-Polyimide Nanocomposite Films
Authors:	Tsai, Mei-Hui Chen, Dong-Sen Chiang, Pei-Chun Lin, Hsin-Chuan Jehng, Jih-Mirn
Contributors:	勤益科技大學
Keywords:	POLYIMIDE ELECTRICAL CONDUCTIVITY MULTI-WALLED CARBON NANOTUBES NANOCOMPOSITE FIELD EMISSION SCANNING ELECTRON MICROSCOPY
Date:	2008-05
Issue Date:	2010-05-05 16:09:51 (UTC+8)
Abstract:	The polyimide/multi-walled carbon nanotubes (PI/MWNTs) nanocomposite film has been successfully synthesized in this study. The source of MWNTs is prepared by chemical vapor deposition (CVD) method. Then the MWNTs are washed with acid for purification before being added into the polymer matrix. The acid-modified procedure aids in dispersing MWNTs in N,N-dimethylacetamide (DMAc) solvent. Based on the results of field emission scanning electron microscopy (FESEM) and transmission electron microscopy (TEM), the MWNTs are embedded in PI and well-dispersed within the PI matrix. The dynamic mechanical analysis (DMA) shows that the storage modulus of nanocomposite film is increased by 68% with the addition of 1 wt% MWNTs into PI. The nanocomposite films start to decompose at or above 400 °C and lose 5% of its weight at 545 °C according to thermogravimetric analysis (TGA). Meanwhile, the electrical conductivity of the nanocomposite film with 3 wt% MWNTs, is raised more than 10 orders of magnitude from 10−15 to 10−5 S/cm.
Relation:	2671-2675頁 Journal of Nanoscience and Nanotechnology 第8卷,第5期
Appears in Collections:	[Department of Chemical and Materials Engineering] 【化工與材料工程系】期刊論文

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