PP/MWCNTs composites: Effects of length of MWCNTs on isothermal crystallization behaviors, crystalline structure, and thermal stability

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Title:	PP/MWCNTs composites: Effects of length of MWCNTs on isothermal crystallization behaviors, crystalline structure, and thermal stability
Authors:	林政彥;Lin, Zheng-Ian;樓靜文;Lou, Ching-Wen;潘毅鈞;Pan, Yi-Jun;謝建騰;Hsieh, Chien-Teng;黃建霖;Huang, Chien-Lin;陳致光;Chen, Chih-Kuang;林佳弘;Lin, Jia-Horng;*
Contributors:	生物資訊與醫學工程學系
Keywords:	Composites, nanotubes, differential scanning calorimetry, crystallization, kinetics
Date:	2018-02
Issue Date:	2018-10-09 05:26:24 (UTC+0)
Abstract:	This study adopts the melt compounding method to prepare /mutli-walled carbon nanotubes composites. The effects of different lengths of the mutli-walled carbon nanotubes on the isothermal crystallization behaviors, crystalline structure, and thermal stability of the polypropylene/mutli-walled carbon nanotubes composites are examined. The PLM results show that the combination of mutli-walled carbon nanotubes prevents the growth of polypropylene spherulites, and thus results in a small size of spherulites. The differential scanning calorimetry results show that the short (S-) or long (L-) mutli-walled carbon nanotubes can function as the nucleating agent of polypropylene, which accelerates the crystallization rate of polypropylene. Avrami theory analyses indicate that the addition of short-mutli-walled carbon nanotubes particularly provides polypropylene/mutli-walled carbon nanotubes composites with a high crystallization rate. The X-ray diffraction results show that the combination of mutli-walled carbon nanotubes does not pertain to the crystal structure. The TGA test results show that long-mutli-walled carbon nanotubes outperform short -mutli-walled carbon nanotubes in improving the thermal stability of polypropylene, and both can significantly improve it.
Relation:	JOURNAL OF COMPOSITE MATERIALS
Appears in Collections:	[Department of Biomedical informatics ] Journal Article

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