title: A new route to poly(N-isopropylacrylamide) microgels supporting a polyvinylamine corona.
abstract: Poly(N-isopropylacrylamide) thermoresponsive microgel particles with an amine-rich corona were prepared by the copolymerization of N-isopropylacrylamide with N-vinylformamide, NVF. Hydrolysis above the volume phase transition temperature converted the surface formamide moieties to the corresponding amine. The surface amine concentration was enriched by coupling iodine-terminated polyNVF oligomers (DP=7) to the microgel amines, followed by a second hydrolysis to give the corresponding polyvinylamine. Microgel swelling and electrophoretic mobility values as functions of pH and temperature were consistent with published results for amine-containing microgels.
authors.affiliation: College of Polymer Science and Engineering, Sichuan University, Chengdu, Sichuan 610065, China.
authors.forename: Jianjun
authors.initials: J
authors.lastname: Xu
authors.forename: Robert
authors.initials: R
authors.lastname: Pelton