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Synthesis and swelling behavior of poly(2‐dimethylaminoethyl methacrylate‐co‐ N ‐hydroxymethyl acrylamide) hydrogels
Author(s) -
Gürdağ Gülten,
Çavuş Selva
Publication year - 2006
Publication title -
polymers for advanced technologies
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.61
H-Index - 90
eISSN - 1099-1581
pISSN - 1042-7147
DOI - 10.1002/pat.846
Subject(s) - comonomer , ammonium persulfate , self healing hydrogels , methacrylate , copolymer , swelling , polymer chemistry , materials science , monomer , acrylamide , hydroxymethyl , ethylenediamine , nuclear chemistry , polymer , chemistry , organic chemistry , composite material
Crosslinked poly(2‐( N , N ‐dimethylamino)ethyl methacrylate‐co‐ N ‐hydroxymethyl acrylamide) poly(DMAEMA‐co‐NHMAAM) copolymers were synthesized using ammonium persulfate (APS)/ N , N , N ′, N ′‐tetramethyl ethylenediamine (TEMED) as initiator/accelerator system in the presence of tetraethyleneglycol diacrylate (TEGDA) as crosslinker in water at 60°C. The effects of comonomer composition in the feed, pH of the swelling medium, and the temperature on the equilibrium swelling (ES) values of hydrogels were investigated. While the initial total monomer concentration was kept constant at 0.5 or 1 mol/l, the contents of APS and TEGDA in the feed were 1 mol% of the total monomers. ES values of DMAEMA‐NHMAAM gels increased with the increase in DMAEMA content in the feed. Although DMAEMA‐NHMAAM hydrogels containing up to 30 mol% were transparent in appearance, the presence of 40% DMAEMA in the copolymer worsened its transparency. ES values of the copolymer gels with high DMAEMA contents increased with both temperature and the pH of swelling medium. Copyright © 2006 John Wiley & Sons, Ltd.