Unresolved issues in the preparation and characterization of thermoresponsive microgels Conferences uri icon

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abstract

  • AbstractThe preparation and properties of colloidal thermal responsive microgels based on poly(N‐isopropylacrylamide) are described with an emphasis on the unresolved issues which will impair commercial implementation. The main difficulties are: 1) removal of sol, surfactants and other impurities; 2) obtaining colloidally stable particles less than 50 nm in diameter; 3) synthesis of concentrated, colloidally stable microgel dispersions; 4) accurate measurement of water content; and, 5) control of microgel particle morphology.

publication date

  • February 2004