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Effect of porosigen and hydrophobic monomer on the fast swelling–deswelling behaviors for the porous thermoreversible copolymeric hydrogels
Author(s) -
Lee WenFu,
Yeh YuChen
Publication year - 2006
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.23143
Subject(s) - swelling , self healing hydrogels , monomer , materials science , polymer chemistry , methacrylate , copolymer , chemical engineering , polymerization , emulsion , emulsion polymerization , ethylene glycol , kinetics , polymer , composite material , engineering , physics , quantum mechanics
A series of porous thermoreversible copolymeric hydrogels were prepared from N ‐isopropylacrylamide (NIPAAm) and hydrophobic monomers such as 2,2,3,3,4,4,5,5‐octafluoropentyl methacrylate (OFPMA) and n ‐butyl methacrylate (BMA) and CaCO 3 or poly(ethylene glycol) 8000 (PEG8000) as porosigen by emulsion polymerization. The effect of hydrophobic monomers and porosigens on the fundamental properties, such as equilibrium swelling ratio, swelling kinetics, gel strength, crosslinked densities, etc., and fast swelling–deswelling behavior for the present copolymeric hydrogels were investigated. Results showed that the deswelling rates for the gels porosigened by CaCO 3 were more rapid than those gels foamed by PEG8000. Results also showed that the swelling rates for the gel foamed by CaCO 3 were higher than those for the gel foamed by PEG8000. At the same time, results also showed that the gels with OFPMA foamed by CaCO 3 exhibit a faster swelling–deswelling behavior than those gels with BMA. © 2006 Wiley Periodicals, Inc. J Appl Polym Sci 100: 3152–3160, 2006