Temperature and pH sensitive ionic hydrogels based on new crosslinkers | Zendy

Atta Ayman M. | Zendy; Arndt K.F. | Zendy

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Temperature and pH sensitive ionic hydrogels based on new crosslinkers

Author(s) -

Atta Ayman M.,

Arndt K.F.

Publication year - 2005

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.606

Subject(s) - copolymer , polymer chemistry , ammonium persulfate , acryloyl chloride , sulfonic acid , self healing hydrogels , polyelectrolyte , aqueous solution , solvent , materials science , proton nmr , swelling , methacrylic acid , chemistry , organic chemistry , polymer , polymerization , acrylate , composite material

New crosslinkers were synthesized from reaction of melamine with acryloyl and methacryloyl chloride in the presence of 1‐methyl‐2‐pyrrolidone as a solvent and triethyl amine as acid acceptor. The chemical structures of the prepared crosslinkers were elucidated from FT‐IR, 1 H‐NMR and 13 C‐NMR analyses. Linear 2‐acrylamido‐2‐methyl‐1‐propane sulfonic acid and methacrylic acid (AMPS/MAA) copolymers were prepared and their viscometric properties in aqueous solution were investigated. Different weight percentages of the prepared crosslinkers were used as crosslinking agent (AMPS/MAA) to prepare ionic copolymers using ammonium persulfate as initiator. The percentage of crosslinkers was varied from 0.5 to 4 wt%. The swelling behaviors of crosslinked AMPS/MAA gels in deionized water were measured at different pH and temperatures. All AMPS/MAA copolymers exhibit faster deswelling rate at 50°C except for the copolymer containing 0.9 (mol ratio) AMPS. Copyright © 2005 John Wiley & Sons, Ltd.

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