Swelling of poly(2-methyl-5-vinylpyridine) gel in linear sodium poly(vinylsulfonate) solution

Esen Abikenovich Bekturov, Vera A. Frolova, Galymzhan Kulamkadyrovich Mamytbekov

1998

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DOI 10.1002/(sici)1521-3935(19980601)199:6<1071::aid-macp1071>3.0.co;2-4
Data confidence 70 medium
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Abstract

The interaction of a poly(2-methyl-5-vinylpyridine) hydrochloride gel (1 a) with the aqueous solution of a linear sodium poly(vinylsulfonate) (2) was investigated. It was established that the gel collapse takes place as a consequence of the formation of a polyelectrolyte complex (1 a-2) between oppositely charged groups. The binding degree θ of the linear polymer with the gel was determined to be 0,4. The kinetics of the interaction process was examined. With increasing pH and ionic strength value a discrete phase transition both of the gel volume and of the polycomplex is induced. The collapse of the latter has increasingly sharp character.