期刊
JOURNAL OF POLYMER SCIENCE PART A-POLYMER CHEMISTRY
卷 40, 期 9, 页码 1342-1352出版社
JOHN WILEY & SONS INC
DOI: 10.1002/pola.10219
关键词
microspheres; polychlorometylstyrene microspheres; chloromethyl functionality; composite microspheres; micrometer-sized particles; swelling; single-step swelling; polymerization; surfaces
Polystyrene template microspheres of 1.4 +/- 0.1 mum were prepared by dispersion polymerization of styrene in a mixture of ethanol and 2-methoxy ethanol. These template particles were then swelled at room temperature in a single step with emulsion that was prepared in sodium dodecyl sulfate aqueous solution from a swelling solvent (dibutyl phthalate) containing the initiator (benzoyl peroxide) and monomer(s) (chlormethylstyrene, divinylbenzene, or ethylene dimethacrylate). Composite uniform particles composed of the template polystyrene and noncrosslinked or crosslinked polychloromethylstyrene were prepared by polymerizing the monomer(s) within the swelled particles at 73 degreesC. Crosslinked uniform polychloromethylstyrene particles of higher surface area were formed by dissolving the template polystyrene polymer of the composite particles. The influence of various reaction parameters, such as dibuthyl phthalate concentration, chloromethylstyrene concentration, crosslinker type and concentration, and so forth on the molecular weight, size, size distribution, shape, morphology, surface area, and decomposition temperature of the particles was investigated. (C) 2002 Wiley Periodicals. Inc.
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