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Swelling behavior of anionic acrylamide-based hydrogels in aqueous salt solutions: Comparison of experiment with theory

1998; Wiley; Volume: 70; Issue: 3 Linguagem: Inglês

10.1002/(sici)1097-4628(19981017)70

1097-4628

Oǧuz Okay, Safiye B. Sarii ik, Sibel Zor,

Liquid Crystal Research Advancements

Journal of Applied Polymer ScienceVolume 70, Issue 3 p. 567-575 Swelling behavior of anionic acrylamide-based hydrogels in aqueous salt solutions: Comparison of experiment with theory Oğuz Okay, Corresponding Author Oğuz Okay Department of Chemistry, Kocaeli University, 41300 Izmit, Kocaeli, Turkey Department of Chemistry, TUBITAK Marmara Research Center, P.O. Box 21, 41400 Gebze, Kocaeli, TurkeyO. Okay, Istanbul Technical University, Department of Chemistry, Maslak, Istanbul, Turkey===Search for more papers by this authorSafiye B. Sariişik, Safiye B. Sariişik Department of Chemistry, Kocaeli University, 41300 Izmit, Kocaeli, TurkeySearch for more papers by this authorSibel D. Zor, Sibel D. Zor Department of Chemistry, Kocaeli University, 41300 Izmit, Kocaeli, TurkeySearch for more papers by this author Oğuz Okay, Corresponding Author Oğuz Okay Department of Chemistry, Kocaeli University, 41300 Izmit, Kocaeli, Turkey Department of Chemistry, TUBITAK Marmara Research Center, P.O. Box 21, 41400 Gebze, Kocaeli, TurkeyO. Okay, Istanbul Technical University, Department of Chemistry, Maslak, Istanbul, Turkey===Search for more papers by this authorSafiye B. Sariişik, Safiye B. Sariişik Department of Chemistry, Kocaeli University, 41300 Izmit, Kocaeli, TurkeySearch for more papers by this authorSibel D. Zor, Sibel D. Zor Department of Chemistry, Kocaeli University, 41300 Izmit, Kocaeli, TurkeySearch for more papers by this author First published: 07 December 1998 https://doi.org/10.1002/(SICI)1097-4628(19981017)70:3 3.0.CO;2-YCitations: 81AboutPDF ToolsRequest permissionExport citationAdd to favoritesTrack citation ShareShare Give accessShare full text accessShare full-text accessPlease review our Terms and Conditions of Use and check box below to share full-text version of article.I have read and accept the Wiley Online Library Terms and Conditions of UseShareable LinkUse the link below to share a full-text version of this article with your friends and colleagues. Learn more.Copy URL Share a linkShare onFacebookTwitterLinkedInRedditWechat Abstract A series of hydrogels were prepared from acrylamide and 2-acrylamido-2-methylpropanesulfonic acid (AMPS) monomers with 0–80 mol % AMPS and using N,N′-methylenebis(acrylamide) as the crosslinker. The swelling capacities of hydrogels were measured in water and in aqueous NaCl solutions. The volume swelling ratio qv of hydrogels in water increases sharply when the mole fraction fc of AMPS increases from 0 to 0.06. At higher values of fc from 0.06 up to 0.18, no change in the swelling capacities of hydrogels was observed; in this range of fc, qv becomes nearly constant at 750. However, as fc further increases, qv starts to increase again monotonically over the entire range of fc. At a fixed value of fc, the swelling ratio of hydrogels decreases with increasing salt concentration in the external solution. The results of the swelling measurements in aqueous salt solutions were compared with the predictions of the Flory–Rehner theory of swelling equilibrium. It was shown that the theory correctly predicts the swelling behavior of hydrogels up to 80 mol % charge densities. The method of estimation of the network parameters was found to be unimportant in the prediction of the experimental swelling data. The network parameters used in the simulation only correct the deficiency of the swelling theory. © 1998 John Wiley & Sons, Inc. J. Appl. Polym. Sci. 70: 567–575, 1998 Citing Literature Volume70, Issue317 October 1998Pages 567-575 RelatedInformation