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A Novel Approach to Prepare Porous Poly( N ‐isopropylacrylamide) Hydrogel with Superfast Shrinking Kinetics
Author(s) -
Zhang JianTao,
Jandt Klaus D.
Publication year - 2008
Publication title -
macromolecular rapid communications
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.348
H-Index - 154
eISSN - 1521-3927
pISSN - 1022-1336
DOI - 10.1002/marc.200700778
Subject(s) - lower critical solution temperature , poly(n isopropylacrylamide) , polydimethylsiloxane , porosity , materials science , polymerization , chemical engineering , sodium dodecyl sulfate , kinetics , template , polymer chemistry , radical polymerization , copolymer , self healing hydrogels , chemistry , nanotechnology , polymer , chromatography , composite material , physics , quantum mechanics , engineering
In this study, the hydrophobic liquid template method was firstly used to prepare temperature sensitive, porous poly( N ‐isopropylacrylamide) (PNIPAAm) hydrogel. During the radical polymerization, hydrophobic polydimethylsiloxane (PDMS) and surfactant sodium dodecyl sulfate (SDS) were used as liquid templates and stabilizer, respectively. After removal of the liquid templates, porous PNIPAAm hydrogel was obtained. This gel exhibited superfast shrinking properties when being transferred from below to above the lower critical solution temperature (LCST), which was ascribed to the interconnected porous structures.