Syndiotactic polystyrene/multi-walled carbon nanotube nanocomposites: Polymorphism, thermal properties, electrical conductivity, and rheological properties

Fang Chyou Chiu*, Bin Hau Li, Jyun Yan Jiang

*此作品的通信作者

研究成果: 期刊稿件文章同行評審

16 引文 斯高帕斯(Scopus)

摘要

Syndiotactic polystyrene (sPS)/multi-walled carbon nanotube (MWNT) nanocomposites were prepared using a melt mixing technique. SEM images demonstrated the fine dispersion of MWNTs through the sPS matrix. DSC results illustrated that the MWNTs facilitated the nucleation of sPS (up to ca. 12.2 °C increase), but retarded the subsequent crystals growth. Based on the Avrami analysis, the dimension of sPS crystals growth in the composites decreased because of the effects of extensive nucleation and the formation of a nanoconfined/constrained environment from the MWNTs. XRD data confirmed that the presence of MWNTs facilitated the formation of β-form sPS crystals. The thermal stability of sPS improved to approximately 31 °C at 3 phr of MWNT loading. A rheological percolation threshold between an MWNT loading of 0.5 and 1 phr was determined by measuring the rheological properties of the samples. The incorporation of MWNTs reduced the electrical resistivity of sPS by 10 orders of magnitude.

原文英語
頁(從 - 到)2230-2240
頁數11
期刊Composites Part A: Applied Science and Manufacturing
43
發行號12
DOIs
出版狀態已出版 - 12 2012

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