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Hydrogel Nanoparticle Dispersions with Inverse Thermoreversible Gelation
Author(s) -
Hu Z.,
Xia X.
Publication year - 2004
Publication title -
advanced materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.707
H-Index - 527
eISSN - 1521-4095
pISSN - 0935-9648
DOI - 10.1002/adma.200305560
Subject(s) - materials science , nanoparticle , acrylic acid , aqueous solution , polymer , self healing hydrogels , phase (matter) , colloid , chemical engineering , poly(n isopropylacrylamide) , nanotechnology , polymer science , polymer chemistry , composite material , copolymer , organic chemistry , chemistry , engineering
A novel aqueous solution of hydrogel nanoparticles with interpenetrating polymer networks of poly(isopropylacrylamide) and poly(acrylic acid) has been synthesized. This hydrogel can form a physically bonded nanoparticle network above a certain gelation temperature. The system exhibits a very rich phase behavior, including a colloidal crystalline phase, in which the system displays iridescent colors (for examples, see Figure).