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Multi‐responsive hydrogels based on N ‐isopropylacrylamide and sodium alginate
Author(s) -
Dumitriu Raluca P,
Mitchell Geoffrey R,
Vasile Cornelia
Publication year - 2011
Publication title -
polymer international
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.592
H-Index - 105
eISSN - 1097-0126
pISSN - 0959-8103
DOI - 10.1002/pi.2929
Subject(s) - self healing hydrogels , swelling , poly(n isopropylacrylamide) , fourier transform infrared spectroscopy , scanning electron microscope , chemical engineering , sodium alginate , materials science , covalent bond , raman spectroscopy , polymer chemistry , sodium , chemistry , copolymer , composite material , polymer , organic chemistry , physics , optics , engineering , metallurgy
Abstract Hydrogels consisting of sodium alginate and N ‐isopropylacrylamide covalently crosslinked with N , N ′‐methylenebisacrylamide were prepared. The mixed‐interpenetrated networks obtained were characterized using elemental analysis, Fourier transform infrared and Raman spectroscopy, swelling measurements and environmental scanning electron microscopy. The thermo‐ and pH‐responsive properties of these hydrogels were evidenced by their swelling behaviour, which depended also on the amount of crosslinking agent and hydrogel composition. Copyright © 2010 Society of Chemical Industry