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- W2012591683 abstract "The copolymers of 4-vinylpyridine (4VP), styrene (St) and divinylbenzene (DVB) with varied compositions, P(4VP-St-DVB), were synthesized by suspension polymerization using 2,2′-azobisisobutyronitrile (AIBN) as an initiator. The insoluble (crosslinked) pyridinium-type polymers in benzyl–pyridinium bromide form, which possess various macromolecular chain compositions, were prepared by the reaction of each P(4VP-St-DVB) with benzyl bromide (BzBr), respectively. By using different halohydrocarbon RX in the quaternization of P(4VP-St-DVB), the insoluble pyridinium-type polymers with various pyridinium group structures were obtained. The structures of P(4VP-St-DVB) and its quaternized product Q-P(4VP-St-DVB) were identified by FTIR. The 4VP content in each copolymer P(4VP-St-DVB) was measured by nonaqueous titration; and the pyridinium group content (Cq) in each Q-P(4VP-St-DVB) sample was determined by means of the back titration manner in argentometry and/or the elemental analysis method, respectively. In addition, the particle structure and the surface morphology of the thus-prepared polymer were observed using SEM. According to a series of experimental results, the preparation and characterization of insoluble pyridinium-type polymers are analyzed and discussed. This work can prepare the ground for a study on the antibacterial activity of insoluble pyridinium-type polymers. © 2000 John Wiley & Sons, Inc. J Appl Polym Sci 78: 668–675, 2000" @default.
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- W2012591683 date "2000-01-01" @default.
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- W2012591683 title "A study of pyridinium-type functional polymers. III. Preparation and characterization of insoluble pyridinium-type polymers" @default.
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- W2012591683 doi "https://doi.org/10.1002/1097-4628(20001017)78:3<668::aid-app230>3.0.co;2-a" @default.
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