Abstract
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.
Original language | English |
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Pages (from-to) | 1819-1823 |
Number of pages | 5 |
Journal | Macromolecular Rapid Communications |
Volume | 25 |
Issue number | 21 |
DOIs | |
Publication status | Published - 3 Nov 2004 |
Keywords
- Core-shell polymers
- Graft copolymers
- Microgels
- pH-sensitive
- Thermal properties
ASJC Scopus subject areas
- Materials Chemistry
- Polymers and Plastics