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Multifractal analysis on dispersion of immiscible high-density polyethylene/polystyrene blends processed via polymer vane plasticating extruder

Authors

  • Zheng-Huan Wu,

    1. National Engineering Research Center of Novel Equipment for Polymer Processing, South China University of Technology, Guangzhou, China
    2. Key Laboratory of Polymer Processing Engineering of Ministry of Education, South China University of Technology, Guangzhou, China
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  • Yong-Qing Zhao,

    1. National Engineering Research Center of Novel Equipment for Polymer Processing, South China University of Technology, Guangzhou, China
    2. Key Laboratory of Polymer Processing Engineering of Ministry of Education, South China University of Technology, Guangzhou, China
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  • Gui-Zhen Zhang,

    1. National Engineering Research Center of Novel Equipment for Polymer Processing, South China University of Technology, Guangzhou, China
    2. Key Laboratory of Polymer Processing Engineering of Ministry of Education, South China University of Technology, Guangzhou, China
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  • Zhi-Tao Yang,

    Corresponding author
    1. Key Laboratory of Polymer Processing Engineering of Ministry of Education, South China University of Technology, Guangzhou, China
    • National Engineering Research Center of Novel Equipment for Polymer Processing, South China University of Technology, Guangzhou, China
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  • Jin-Ping Qu

    Corresponding author
    1. Key Laboratory of Polymer Processing Engineering of Ministry of Education, South China University of Technology, Guangzhou, China
    • National Engineering Research Center of Novel Equipment for Polymer Processing, South China University of Technology, Guangzhou, China
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Correspondence to: Z.-T. Yang (E-mail: meztyang@scut.edu.cn); J.-P. Qu (E-mail: jpqu@scut.edu.cn)

ABSTRACT

A 30 wt % high-density polyethylene (HDPE)/70 wt % polystyrene (PS) blends and 5 wt % HDPE/95 wt % PS blends were prepared via polymer vane plasticating extruder, which can generate elongational force field, in different rotation speeds. The fracture surface of the HDPE/PS blends was observed by a scanning electron microscope, and the dispersion of the HDPE in the PS matrix was evaluated by multifractal programs. The multifractal spectrum width math formula, and the dimension difference of maximum and minimum probability subset math formula were defined to discuss the homogeneity and the diameter of the HDPE particles. The results showed that the multifractal method was an effective tool to quantitatively describe the special distribution and diameter of the dispersed particles. © 2013 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 130: 2328–2335, 2013

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