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Polymers 2016, 8(6), 233;

pH- and Metal Ion- Sensitive Hydrogels based on N-[2-(dimethylaminoethyl)acrylamide]

Centre for Polymer Science and Engineering, Indian Institute of Technology, Hauz Khas, New Delhi 110016, India
Institute for Macromolecular Chemistry and Textile Chemistry, Dresden University of Technology, D-01062 Dresden, Germany
Chemistry Department, University of Paderborn, Warburger Str. 100, D-33098 Paderborn, Germany
Authors to whom correspondence should be addressed.
Academic Editors: André Laschewsky and Wei Min Huang
Received: 24 February 2016 / Revised: 12 May 2016 / Accepted: 6 June 2016 / Published: 15 June 2016
(This article belongs to the Special Issue Polymers for Aqueous Media)
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Smart hydrogels are promising materials for actuators and sensors, as they can respond to small changes in their environment with a large property change. Hydrogels can respond to a variety of stimuli, for example temperature, pH, metal ions, etc. In this article, the synthesis and characterization of polyampholyte hydrogels based on open chain ligands showing pH and metal ion sensitivity are described. Copolymer and terpolymer gels using different mixtures of monomers i.e., N-[2-(dimethylaminoethyl)acrylamide] (DMAEAAm), N,N-dimethylacrylamide (DMAAm), acrylic acid (AA) and 2-acrylamido-2-methyl-1-propanesulphonic acid (AMPS), have been synthesized. The effect of copolymer composition, i.e., the ratio and amount of ionic monomers and the degree of crosslinking on the swelling characteristics, was evaluated as a function of pH. On this basis, metal ion sensitivity measurements were performed at selected pH values. The metal ion sensitivity was measured by varying the concentration of Cu2+, Zn2+ and Ag+ ions under acidic pH conditions. View Full-Text
Keywords: smart hydrogels; pH sensitive; metal ion sensitive; N-[2-(dimethylaminoethyl)acrylamide]; photopolymerization smart hydrogels; pH sensitive; metal ion sensitive; N-[2-(dimethylaminoethyl)acrylamide]; photopolymerization

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Nebhani, L.; Choudhary, V.; Adler, H.-J.P.; Kuckling, D. pH- and Metal Ion- Sensitive Hydrogels based on N-[2-(dimethylaminoethyl)acrylamide]. Polymers 2016, 8, 233.

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