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Nucleation effect of hydroxyl-purified multiwalled carbon nanotubes in poly(p-phenylene sulfide) composites

Authors

  • Jiang Sheng-Ling,

    1. Key Laboratory of Carbon Fiber and Functional Polymers Ministry of Education, P.O. Box 227, Beijing University of Chemical Technology, Beijing 100029, China
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  • Gu Xiao-Yu,

    Corresponding author
    1. Key Laboratory of Carbon Fiber and Functional Polymers Ministry of Education, P.O. Box 227, Beijing University of Chemical Technology, Beijing 100029, China
    • Key Laboratory of Carbon Fiber and Functional Polymers Ministry of Education, P.O. Box 227, Beijing University of Chemical Technology, Beijing 100029, China
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  • Zhang Zhi-Yuan

    1. Key Laboratory of Carbon Fiber and Functional Polymers Ministry of Education, P.O. Box 227, Beijing University of Chemical Technology, Beijing 100029, China
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Abstract

To investigate the nucleation effect of hydroxyl-purified multiwalled carbon nanotubes (MWNTs-OH) in poly(p-phenylenesulfide) (PPS), a series of composites were prepared by blending PPS with MWNTs-OH at 1, 2, and 3 wt %, respectively. Under SEM observation MWNTs-OH were found homogeneously dispersed in the PPS matrix. DSC thermograms revealed that the enthalpy (ΔHc) of the composites increased with increasing MWNT-OH content, whereas the crystallization temperature (Tc) decreased progressively. The decrease in Tc was in accordance with the smaller crystallite size determined with WXRD characterization, and the increase in ΔHc was evidenced by FTIR and XPS analyses. The higher ΔHc shows that MWNTs-OH serves as a nucleating agent, providing sufficiently multiplied sites for crystal growth. The lowering of Tc was attributed not only to MWNTs-OH network hindrance to PPS chain fusing rearrangement, but also to a poorer affinity between MWNTs-OH and PPS; both effects coordinately govern Tc of PPS/MWNTs-OH composites. © 2012 Wiley Periodicals, Inc. J. Appl. Polym. Sci., 2013

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