Effects of cosolvent on formation and morphology of microspheres in precipitation polymerization of divinylbenzene in supercritical carbon dioxide

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,wi...

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Bibliographic Details
Published in:Chinese chemical letters 2011-04, Vol.22 (4), p.489-492
Main Authors: Li, Chun Sheng, Liang, Jing Cui, Zhu, Xiao Li, Kong, Xiang Zheng
Format: Article
Language:English
Subjects:
Cosolvent
Polydivinylbenzene microspheres
Precipitation polymerization
Supercritical carbon dioxide
二乙烯基苯
二乙烯苯
助溶剂
单分散微球
并行运行
微形态
沉淀聚合
超临界二氧化碳
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Summary: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 without use of cosolvent.
ISSN:1001-8417
1878-5964
DOI:10.1016/j.cclet.2010.10.022