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Synthesis of core–shell type microsphere with reactive seed microspheres

✍ Scribed by Reiko Saito; Xiaoyu Ni; Ayako Ichimura; Koji Ishizu

Publisher: John Wiley and Sons
Year: 1998
Tongue: English
Weight: 207 KB
Volume: 69
Category: Article
ISSN: 0021-8995
DOI: 10.1002/(sici)1097-4628(19980711)69:2<211::aid-app1>3.0.co;2-q

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✦ Synopsis

Monodispersed poly(methyl methacrylate) (PMMA) particles (seed microspheres) were synthesized with the living radical initiators, tetramethylthiuram disulfide, or p-xylene dimethyldithiocarbamate by suspension polymerization in water media with and without divinyl benzene as a crosslinker. Monodispersed spherical microspheres with PMMA core-polyacrylamide shells were synthesized by UV irradiation to the seed microsphere-acrylamide aqueous solution. The content and the molecular weight of the polyacrylamide shell chain were controlled by changing the acrylamide feed and irradiation time of the UV light. The microspheres became dispersible to water after the UV irradiation.

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