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Preparation of poly(divinylbenzene) microspheres with controllable pore structure using poly(propylene)/toluene as coporogen

Authors

  • Qingquan Liu,

    Corresponding author
    1. State Key Laboratory of Chemical Engineering, College of Materials Science and Chemical Engineering, Zhejiang University, Hangzhou 310027, China
    2. College of Chemistry and Chemical Engineering, Hunan University of Science and Technology, Xiangtan 411201, China
    • State Key Laboratory of Chemical Engineering, College of Materials Science and Chemical Engineering, Zhejiang University, Hangzhou 310027, China
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  • Li Wang,

    1. State Key Laboratory of Chemical Engineering, College of Materials Science and Chemical Engineering, Zhejiang University, Hangzhou 310027, China
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  • Anguo Xiao,

    1. State Key Laboratory of Chemical Engineering, College of Materials Science and Chemical Engineering, Zhejiang University, Hangzhou 310027, China
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  • Haojie Yu,

    1. State Key Laboratory of Chemical Engineering, College of Materials Science and Chemical Engineering, Zhejiang University, Hangzhou 310027, China
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  • Jianhua Ding,

    1. State Key Laboratory of Chemical Engineering, College of Materials Science and Chemical Engineering, Zhejiang University, Hangzhou 310027, China
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  • Qiaohua Tan,

    1. State Key Laboratory of Chemical Engineering, College of Materials Science and Chemical Engineering, Zhejiang University, Hangzhou 310027, China
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  • Jia Huo

    1. State Key Laboratory of Chemical Engineering, College of Materials Science and Chemical Engineering, Zhejiang University, Hangzhou 310027, China
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Abstract

Poly(divinylbenzene) (poly(DVB)) microspheres with controllable pore structure were synthesized by suspension polymerization in the presence of toluene and low-molecular weight poly(propylene) (PP) as coporogen. The weight fraction of PP in toluene varied from 0 to 20 wt %, and the feed ratio of coporogen and DVB was kept at 1/1 (vol/vol). Effects of PP weight fraction in coporogen on the specific surface area, the average pore size, the pore size distribution and the total pore volume of final microspheres were examined. As expected, poly(DVB) microspheres prepared with toluene as sole porogen had a high specific surface area (558 m2/g). Using mixtures of toluene and PP as coporogen, it was found that the specific surface area shifted higher values when low levels of PP (2.0–6.0 wt %) in toluene were used as coporogen. However, further increase of PP weight fraction in toluene resulted in progressive decline of the specific surface area. Hg intrusion/extrusion curves and N2 sorption isotherms implied caged pore structure with some small entrances. Furthermore, most of pore connectivity limitations may be eliminated when the weight fraction of PP in toluene exceeded 10.0 wt %. © 2009 Wiley Periodicals, Inc. J Appl Polym Sci, 2009

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