Isothermal crystallization kinetics of polypropylene with silane functionalized multi‐walled carbon nanotubes |
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| Authors: | Zhen Zhou Shifeng Wang Lan Lu Yong Zhang Yinxi Zhang |
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| Institution: | 1. State Key Laboratory of Metal Matrix Composites, School of Chemistry and Chemical Technology, Shanghai Jiao Tong University, Shangai 200240, China;2. State Key Laboratory of Metal Matrix Composites, School of Chemistry and Chemical Technology, Shanghai Jiao Tong University, Shangai 200240, ChinaState Key Laboratory of Metal Matrix Composites, School of Chemistry and Chemical Technology, Shanghai Jiao Tong University, Shangai 200240, China |
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| Abstract: | Multi‐walled carbon nanotubes (MWNTs) were functionalized with a silane coupling agent. The MWNTs were first coated with inorganic silica by a sol‐gel process and then grafted with 3‐methacryloxypropyltrimethoxysilane (3‐MPTS). The effect of raw MWNTs and silane‐functionalized MWNTs on the crystallization behavior of poly(propylene) (PP) was investigated by means of polarized optical microscopy, differential scanning calorimetry, and wide‐angle X‐ray diffraction. Results obtained from isothermal crystallization experiments indicate that 3‐MPTS functionalization affects the crystallization and melting behavior of PP/MWNTs composites remarkably, which can be attributed to the fact that 3‐MPTS functionalization of MWNTs leads to a uniform dispersion of MWNTs in PP matrix resulting in the good nucleating effect of MWNTs. © 2007 Wiley Periodicals, Inc. J Polym Sci Part B: Polym Phys 45: 1616–1624, 2007 |
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| Keywords: | composites crystallization poly(propylene) |
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