Crystallization and melting behaviors of maleated polyethylene and its composite with fibrous cellulose

Authors

  • Farao Zhang,

    1. Institute for Marine Resources and Environment Research, National Institute of Advanced Industrial Science and Technology, 2217-14 Hayashi-Cho, Takamatsu 761-0395, Japan
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  • Wulin Qiu,

    1. Institute for Marine Resources and Environment Research, National Institute of Advanced Industrial Science and Technology, 2217-14 Hayashi-Cho, Takamatsu 761-0395, Japan
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  • Liqun Yang,

    1. Institute for Marine Resources and Environment Research, National Institute of Advanced Industrial Science and Technology, 2217-14 Hayashi-Cho, Takamatsu 761-0395, Japan
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  • Takashi Endo,

    1. Institute for Marine Resources and Environment Research, National Institute of Advanced Industrial Science and Technology, 2217-14 Hayashi-Cho, Takamatsu 761-0395, Japan
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  • Takahiro Hirotsu

    Corresponding author
    1. Institute for Marine Resources and Environment Research, National Institute of Advanced Industrial Science and Technology, 2217-14 Hayashi-Cho, Takamatsu 761-0395, Japan
    • Institute for Marine Resources and Environment Research, National Institute of Advanced Industrial Science and Technology, 2217-14 Hayashi-Cho, Takamatsu 761-0395, Japan
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Abstract

The crystallization and melting behaviors of maleated polyethylene (MPE) and its composite with fibrous crystalline cellulose are investigated by differential scanning calorimetry. MPE exhibits a higher crystallization starting temperature, because of the interactions between maleic anhydride (MA) groups for nucleation, and lower melting and crystallization enthalpies, because of the intensive irregularity of MPE chains compared to unmaleated PE (UPE). Fibrous cellulose (FC) slightly facilitates the nucleation of MPE but causes no change in the transition enthalpies of MPE for crystallization and melting in UPE–FC and MPE–FC composites. The kinetics of crystallization show that the Avrami exponent depends on the content of MA groups and FC to a small extent and the activation energy is largely determined by the MA content, suggesting the irregularity and decreased mobility of MPE chains that is due to the interactions between the grafted MA groups in MPE and the FC composite. © 2003 Wiley Periodicals, Inc. J Appl Polym Sci 89: 3292–3300, 2003

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