Preparation of highly crosslinked monodisperse poly(styrene-co- divinylbenzene) microspheres by two-stage dispersion polymerization

Moli Cao, Bin Tong*, Jinbo Shen, Yuping Dong, Junge Zhi

*此作品的通讯作者

科研成果: 期刊稿件文章同行评审

11 引用 (Scopus)

摘要

Monodisperse poly(styrene-co-divinylbenzene) microspheres crosslinked with different concentrations of divinylbenzene were synthesized by two-stage dispersion polymerization in ethanol dispersion medium with poly(N-vinyl pyrrolidone) as a stabilizer and 2,2′-azobisisobutyronitrile as a radical initiator. The microsphere size, size distribution, surface morphology, and structure were characterized by a particle analyzer, a scanning microscope and IR spectroscopy. The effect of the adding time, the adding rate, and the concentration of crosslinker on the size, size distribution, and shape of the resulting particles were also investigated. Highly crosslinked monodisperse microspheres with diameters from 2 to 4 μm were obtained. The SEM characterization showed that the resulting microspheres had spherical shapes with smooth surfaces. The obtained microspheres have good resistance to solvent whether at ambient or heating temperatures and are thermally stable.

源语言英语
页(从-至)1189-1196
页数8
期刊Journal of Applied Polymer Science
109
2
DOI
出版状态已出版 - 15 7月 2008

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