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Porous monodisperse poly(divinylbenzene) microspheres by precipitation polymerization

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

Publisher
John Wiley and Sons
Year
1998
Tongue
English
Weight
305 KB
Volume
36
Category
Article
ISSN
0887-624X

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✦ Synopsis

The precipitation polymerization of commercial divinylbenzene in acetonitrile containing up to 40 vol. % toluene or other cosolvents is shown to produce novel porous monodisperse poly(divinylbenzene) microspheres. These microspheres have diameters between 4 and 7 mm, total pore volumes of up to 0.52 cm 3 /g, and surface areas of up to 800 m 2 /g. As no surfactant nor stabilizer was used in the preparation of these particles, their surfaces are free of any such residues. The particles were slurry-packed into stainless steel columns for size exclusion chromatography evaluation, and the results show an exclusion limit at molecular weights of 500 g/mol.

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