Chunsheng Li

Publications (1)2.33 Total impact

• Article: Preparation of polydivinylbenzene microspheres in supercritical carbon dioxide using acetone as cosolvent

  Chunsheng Li, Jingcui Liang, Xiaoli Zhu, Xiang Zheng Kong
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  ABSTRACT: Monodisperse polydivinylbenzene (PDVB) microspheres with clean surface were prepared by precipitation polymerization without stabilizer in supercritical carbon dioxide using acetone as cosolvent. Effects of the cosolvent, reaction time and pressure, and monomer concentration on the polymerization were studied. It was found that the conversions in all polymerization systems were above 95%. Examination by scanning electron microscopy showed that reaction pressure, divinylbenzene concentration, and level of the cosolvent had pronounced effects on the morphology of the microspheres. When 6 ∼ 7ml of acetone was used in a reactor of 50ml, monodisperse PDVB microspheres of around 2.1μm in diameter were obtained. Thermal gravimetrical analysis showed the products were of good thermostability up to about 400°C. KeywordsMorphology-Particle size distribution-Polydivinylbenzene-Precipitation polymerization-Supercritical carbon dioxide
  Colloid and Polymer Science 05/2012; 288(16):1571-1580. · 2.33 Impact Factor