Abstract
A comblike polymer with hydrophilic and hydrophobic side chains has been synthesized as follows: (1) A solution radical polymerization of dimethyl(hydroxyethyl)(4-vinylbenzyl)ammonium chloride and triphenyl(4-vinylbenzyl)phosphonium chloride generated a water-soluble copolymer. (2) The Wittig reaction converted the pendant phosphonium units to vinylstyrene units. (3) The addition of the surfactant Span-80 and of a hydrophilic monomer (acrylamide, sodium styrene sulfonate, or poly(ethylene glycol) diacrylate) followed by polymerization grafted a hydrophilic polymer to the vinylstyrene units. (4) The addition of a hydrophobic monomer (styrene, n-butyl acrylate) followed by polymerization grafted a hydrophobic polymer to vinylstyrene units protected by Span-80 molecules
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