Phase transition in swollen gels. 25.Effect of the anionic comonomer on the collapse of poly(1-vinyl-2-pyrrolidone) hydrogels

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F99%3A11110028" target="_blank" >RIV/00216208:11320/99:11110028 - isvavai.cz</a>

Result on the web

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DOI - Digital Object Identifier

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Result language

angličtina

Original language name

Phase transition in swollen gels. 25.Effect of the anionic comonomer on the collapse of poly(1-vinyl-2-pyrrolidone) hydrogels

Original language description

The swelling and mechanical behaviour of ionized networks prepared by radiation polymerization of 1-vinyl-2-pyrrolidone, sodium itaconate and of a crosslinker, 3,3'ethylidenebis(1-vinyl-2-pyrrolidone), was investigated in water/acetone mixtures and aqueous NaCl solutions. In the ionic comonomer molar fraction range xs=0.022-0.15 the first order phase transition (collapse) was found, accompanied by a stepwise change in equilibrium modulus. The earlier suggested theory describing the swelling equilibriumof polyelectrolyte networks was applied to describe the collapse phenomenon in water/acetone mixtures and swelling in dependence on NaCl concentration. Satisfactory agreement was obtained when the effective degree of ionization i (i<2xs) was introduced.

Czech name

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Czech description

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Type

J_x - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)

CEP classification

CD - Macromolecular chemistry

OECD FORD branch

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Project

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Continuities

Z - Vyzkumny zamer (s odkazem do CEZ)

Publication year

1999

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

European polymer journal

ISSN

0014-3057

e-ISSN

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Volume of the periodical

35

Issue of the periodical within the volume

3

Country of publishing house

GB - UNITED KINGDOM

Number of pages

8

Pages from-to

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UT code for WoS article

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EID of the result in the Scopus database

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