Effects of pore-forming agents and polymer composition on the properties of novel poly(N,N-dimethylaminoethyl methacrylate sulfate-co-N,N-dimethylacrylamide) hydrogels / Gulten Gurdag in Industrial & engineering chemistry research, Vol. 50 N° 13 (Juillet 2011)  

Public ISBD [article]  inIndustrial & engineering chemistry research > Vol. 50 N° 13 (Juillet 2011) . - pp. 8295-8303 Titre : Effects of pore-forming agents and polymer composition on the properties of novel poly(N,N-dimethylaminoethyl methacrylate sulfate-co-N,N-dimethylacrylamide) hydrogels Type de document : texte imprimé Auteurs : Gulten Gurdag, Auteur ; Aysegul Gokalp, Auteur Année de publication : 2011 Article en page(s) : pp. 8295-8303 Note générale : Chimie industrielle Langues : Anglais (eng) Mots-clés : Polymer composition Novel poly Résumé : Homopolymer of N,N-dimethylaminoethyl methacrylate sulfate (DMAEMASA) and its copolymer with N,N-dimethylacrylamide (DMAm) [P(DMAEMASA-co-DMAm)] were synthesized in the presence and absence ofpore-forming agents NaHCO3, poly(ethylene glycol) 2000 (PEG), and sucrose (SUC). The polymers were characterized by equilibrium swelling measurements (ESVs) in distilled water (20-60 °C) and buffer solutions (I=0.1 M, pH=2.2-10.0,20 °C), FTIR, DSC, and SEM methods. The presence of DMAm in monomer feed and the use of pore-forming agents during the polymerization enhanced the swelling of polymers. ESVs of both porous and nonporous PDMAEMASA and P(DMAEMASA-co-DMAm) gels decreased with pH, and displayed a phase transition at pH = 5. Among the pore-formers, NaHCO3 made the highest contribution to the swelling of polymers, but poly(ethylene glycol) and sucrose slightly affected the swelling values of gels. While glass transition temperature (Tg) of nonporous DMAEMASA homopolymer was determined to be 168.4 °C, Tgs of nonporous copolymer with 20- and 40-mol % DMAm were found to be 154.5 and 147.8 °C, respectively. Pore-formers decreased the Tg of homopolymer in the order NaHCO3 DEWEY : 660 ISSN : 0888-5885 En ligne : http://cat.inist.fr/?aModele=afficheN&cpsidt=24332155 [article] Effects of pore-forming agents and polymer composition on the properties of novel poly(N,N-dimethylaminoethyl methacrylate sulfate-co-N,N-dimethylacrylamide) hydrogels [texte imprimé] / Gulten Gurdag, Auteur ; Aysegul Gokalp, Auteur . - 2011 . - pp. 8295-8303. Chimie industrielle Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 50 N° 13 (Juillet 2011) . - pp. 8295-8303 Mots-clés : Polymer composition Novel poly Résumé : Homopolymer of N,N-dimethylaminoethyl methacrylate sulfate (DMAEMASA) and its copolymer with N,N-dimethylacrylamide (DMAm) [P(DMAEMASA-co-DMAm)] were synthesized in the presence and absence ofpore-forming agents NaHCO3, poly(ethylene glycol) 2000 (PEG), and sucrose (SUC). The polymers were characterized by equilibrium swelling measurements (ESVs) in distilled water (20-60 °C) and buffer solutions (I=0.1 M, pH=2.2-10.0,20 °C), FTIR, DSC, and SEM methods. The presence of DMAm in monomer feed and the use of pore-forming agents during the polymerization enhanced the swelling of polymers. ESVs of both porous and nonporous PDMAEMASA and P(DMAEMASA-co-DMAm) gels decreased with pH, and displayed a phase transition at pH = 5. Among the pore-formers, NaHCO3 made the highest contribution to the swelling of polymers, but poly(ethylene glycol) and sucrose slightly affected the swelling values of gels. While glass transition temperature (Tg) of nonporous DMAEMASA homopolymer was determined to be 168.4 °C, Tgs of nonporous copolymer with 20- and 40-mol % DMAm were found to be 154.5 and 147.8 °C, respectively. Pore-formers decreased the Tg of homopolymer in the order NaHCO3 DEWEY : 660 ISSN : 0888-5885 En ligne : http://cat.inist.fr/?aModele=afficheN&cpsidt=24332155

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