Zwitterionic and Charge-Balanced Polyampholyte Copolymer Hydrogels

Abstract:

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Zwitterionic copolymers were synthesised from N,N-dimethyl-N-(2-acryloylethyl)-N-(3-sulfopropyl) ammonium betaine (SPDA) and 2-hydroxyethyl methacrylate (HEMA) produce a series of polyzwitterion hydrogels. For the synthesis of the charge-balanced copolymer hydrogels, two cationic monomers were selected: 2-(diethylamino) ethyl methacrylate (DMAEMA) and 3-(dimethylamino) propyl methacrylamide (DMAPMA), and an anionic monomer; 2-acrylamido-2-methylpropane sulphonic acid (AMPS). Two series of charge-balanced copolymers were synthesized from stoichiometrically equivalent ratios of DMAEMA or DMAPMA and AMPS with HEMA as a termonomer. All synthesized copolymers produced clear and cohesive hydrogels. The zwitterionic and charge-balanced copolymers displayed similar equilibrium water contents together with similar mechanical and surface energy properties. The swelling of the zwitterionic and the charge-balanced copolymers shows some features of antipolyelectrolyte behavior.

Info:

Periodical:

Advanced Materials Research (Volumes 55-57)

Main Theme:

Edited by:

Tawee Tunkasiri

Pages:

729-732

DOI:

10.4028/www.scientific.net/AMR.55-57.729

Citation:

D. Campbell and B.J. Tighe, "Zwitterionic and Charge-Balanced Polyampholyte Copolymer Hydrogels", Advanced Materials Research, Vols. 55-57, pp. 729-732, 2008

Online since:

August 2008

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Price:

$35.00

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