Journal
MACROMOLECULAR RAPID COMMUNICATIONS
Volume 25, Issue 21, Pages 1819-1823Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/marc.200400362
Keywords
core-shell polymers; graft copolymers; microgels; pH-sensitive; thermal properties
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A new method has been developed to prepare smart polymeric microgels that consist of well-defined temperature-sensitive cores with pH-sensitive shells. The microgels were obtained directly from aqueous graft copolymerizations of N-isopropylacrylamide and N,N-methylenebisacrylamide from water-soluble polymers containing amino groups such as poly(ethyleneimine) and chitosan. The gel diameters ranged from 300 to 400 nm. The unique core-shell nanostructures, which had narrow size distributions, exhibited tuneable responses to pH and temperature.
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