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Highly crosslinked poly(styrene-co-divinylbenzene) microspheres prepared by precipitation polymerization: Effects of the polymerization parameters on the characteristics of the particles

✍ Scribed by Hengli Cui; Hou Chen; Rongjun Qu; Chunhua Wang; Changmei Sun; Wenying Zhou; Mengmeng Yu; Hongyan Jiang

Publisher
John Wiley and Sons
Year
2009
Tongue
English
Weight
298 KB
Volume
111
Category
Article
ISSN
0021-8995

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✦ Synopsis

Abstract

Highly crosslinked poly(styrene‐co‐divinylbenzene) microspheres with a 1.0–2.5‐μm diameter were prepared by precipitation polymerization in neat acetonitrile. The effects of various polymerization parameters such as the monomer and initiator concentration, comonomer composition, and cosolvents on the properties of the resulting particles were studied. The particle diameter increased with the monomer concentration, whereas the particle size distribution remained almost constant. The resulting yield of the particles reached 41.1% when 6 wt % 2,2′‐azobisisobutyronitrile (based on the total monomer) was used as the initiator. The styrene fraction in the monomer composition and toluene fraction in the solvent mixture also significantly affected the morphology and size of the resulting particles. © 2008 Wiley Periodicals, Inc. J Appl Polym Sci, 2009

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