title: Colored polystyrene particles with a surface charge influenced by suspension polymerization.
abstract: Blue polystyrene (PS) particles copolymerized with poly (ethylene glycol) ether methyl methacrylate (PEG-MA, Mn = 300, 475, 950) were prepared by suspension polymerization in this study. 0-10 wt% PEG-MA was copolymerized with 100-90 wt% styrene by suspension polymerization. These blue PS particles were characterized using SEM, IR, UV, DSC, and zeta potential measurements. The T(g) data results for the suspension copolymers and a solubility test in THF along with the matching IR spectroscopy results showed that copolymerization proceeded during the polymerization process. The poly[styrene-co-(PEG-MA)] latices were 30-60 nm in size, with T(g) values of 341-385 degrees K, zeta- potential values of 51.5-162 mV, and electrophoretic mobility values ranging from 3.3 to 10.9 x 10(-6) cm2/Vs. Blue dye incorporated into the polystyrene particles existed at levels that exceeded 85% based on the UV absorbance results.
authors.forename: Woo Jin
authors.initials: WJ
authors.lastname: Yim
authors.forename: Ki Chang
authors.initials: KC
authors.lastname: Lee
authors.forename: Sang Yong
authors.initials: SY
authors.lastname: Nam