Phase transition in swollen gels. 26.Effect of charge concentration on temperature dependence of swelling and mechanical behaviour poly(A-vinylcaprolactam) gels

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F99%3A11110029" target="_blank" >RIV/00216208:11320/99:11110029 - 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. 26.Effect of charge concentration on temperature dependence of swelling and mechanical behaviour poly(A-vinylcaprolactam) gels
Original language description
The swelling and mechanical behaviour of ionized networks of copolymers of N-vinylcaprolactam with an ionic comonomer, N,N-diallyl-N,N-dimethylammonium cloride (molar fracton xs=0-0.1) in presence of a crosslinker, 3,3'-(ethane-1,1-diyl)bis(1-vinyl-2- pyrrolidone) was investigated in water and aqueous NaCl solutions as a function of temperature. On heating, a continuous decrease in the swelling degree in water, Q, accompanied by corresponding increase in equilibrium modulus, was observed. Increasing xsshifts the volume transition temperature, Ttr, from the swollen to the collapsed state, to higher temperatures. The swelling behaviour can be in the first approximation described by the theory of polyelectrolyte networks in which repulsion of charges andfinite chain extensibility are considered.
Czech name
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Czech description
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Type
J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)
CEP classification
CD - Macromolecular chemistry
OECD FORD branch
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Publication year
1999
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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