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Effects of cosolvent on formation and morphology of microspheres in precipitation polymerization of divinylbenzene in supercritical carbon dioxide
Authors:Chun Sheng Li  Jing Cui Liang  Xiao Li Zhu  Xiang Zheng Kong Key Laboratory of Fluorine Chemistry  Chemical Materials of Sh  ong Province  College of Chemistry  Chemical Engineering  University of Jinan  Jinan  China
Institution:Key Laboratory of Fluorine Chemistry and Chemical Materials of Shandong Province, College of Chemistry and Chemical Engineering, University of Jinan, Jinan 250022, China
Abstract:Precipitation polymerizations of divinylbenzene(DVB) in pure supercritical carbon dioxide,and parallel runs with presence of a cosolvent were carried out.The results showed that use of acetone as the cosolvent contributed greatly to the formation of the monodisperse microspheres.PDVB microspheres,with obviously higher uniformity than reported up to date,were achieved using 6-7 mL of acetone in a reactor of 50 mL with DVB concentration of 0.4 mol/L under 16 MPa,a much lower pressure than previously reported ...
Keywords:Polydivinylbenzene microspheres  Precipitation polymerization  Supercritical carbon dioxide  Cosolvent  
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