caa a22 4500 465786952 CHVBK 20180323112012.0 cr unu---uuuuu 170327e19901201xx s 000 0 eng 10.1007/BF00300158 doi (NATIONALLICENCE)springer-10.1007/BF00300158 Phase transition in swollen gels [Elektronische Daten] 15. The effect of the amide group in the side chain with a positive charge on the collapse of poly(acrylamide) networks [M. Ilavský, K. Bouchal, J. Hrouz] Summary: The swelling and mechanical behaviour of networks of copolymers of acrylamide, methylenebisacrylamide and of the quaternary salt-N′,N′,N′-trimethyl-N′-methacrylamido-2-ethylammonium chloride (mole fraction of salt x s =0-0.17) in water-acetone mixtures was investigated. In the range x s >0.01 the phase transition was observed; with increasing concentration x s both the extent of transition and the critical concentration of acetone in the mixture, at which the collapse takes place, increase. It was found that, compared with the ester group, the attachment of the positive charge to the main chain through the amide bond increases the extent of transition and decreases the critical acetone concentration. The jumpwise change in the gel volume accompanying the collapse is accompanied by a similar change in the shear modulus of the gel. Springer-Verlag, 1990 Ilavský M. Institute of Macromolecular Chemistry, Czechoslovak Academy of Sciences, CS-162 06, Prague 6, Czechoslovakia aut Bouchal K. Institute of Macromolecular Chemistry, Czechoslovak Academy of Sciences, CS-162 06, Prague 6, Czechoslovakia aut Hrouz J. Institute of Macromolecular Chemistry, Czechoslovak Academy of Sciences, CS-162 06, Prague 6, Czechoslovakia aut Polymer Bulletin Springer-Verlag 24/6(1990-12-01), 619-625 0170-0839 24:6<619 1990 24 289 https://doi.org/10.1007/BF00300158 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF00300158 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Ilavský M. Institute of Macromolecular Chemistry, Czechoslovak Academy of Sciences, CS-162 06, Prague 6, Czechoslovakia aut NATIONALLICENCE 700 1- Bouchal K. Institute of Macromolecular Chemistry, Czechoslovak Academy of Sciences, CS-162 06, Prague 6, Czechoslovakia aut NATIONALLICENCE 700 1- Hrouz J. Institute of Macromolecular Chemistry, Czechoslovak Academy of Sciences, CS-162 06, Prague 6, Czechoslovakia aut NATIONALLICENCE 773 0- Polymer Bulletin Springer-Verlag 24/6(1990-12-01), 619-625 0170-0839 24:6<619 1990 24 289 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer