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Monodisperse poly(chloromethylstyrene-co-divinylbenzene) microspheres by precipitation polymerization

✍ Scribed by Wen-Hui Li; Kai Li; Harald D. H. Stöver

Publisher
John Wiley and Sons
Year
1999
Tongue
English
Weight
450 KB
Volume
37
Category
Article
ISSN
0887-624X

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✦ Synopsis

Monodisperse poly(chloromethylstyrene-co-divinylbenzene-80) microspheres of 4-6-m diameter were prepared by precipitation copolymerization in neat acetonitrile and in acetonitrile/toluene mixtures. These particles have clean surfaces due to the absence of any added stabilizer and up to 0.5 cm 3 /g pore volume, depending on the comonomer ratio and on the amount of toluene cosolvent. The effects of comonomer and cosolvent ratios on microsphere formation and morphology are described.

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## 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