Colloidal Unimolecular Polymer particles (CUPs) were prepared by the process of water-reduction on copolymers with a hydrophobic backbone and hydrophilic pendant groups. CUP systems are composed of solid, spherical polymer particles as the dispersed phase suspended in the continuous aqueous phase. Copolymers of methyl methacrylate (MMA) with either methacrylic acid (MAA), 2-acrylamido-2-methylpropane sulfonic acid (AMPS) and [2-(methacryloyloxy)ethyl]trimethylammonium chloride (MADQUAT) were prepared by free radical polymerization technique with a 9:1 ratio of hydrophobic: hydrophilic monomer ratio. Three different molecular weights for each type of copolymer were synthesized to study the effect of molecular weight/particle size of CUPs on the surface tension. Dynamic surface tension studies performed using the maximum bubble pressure tensiometer revealed that the rate of change of surface tension was highest for sulfonates followed by QUATs and lowest for carboxylates at similar molecular weight. The effects of concentration and molecular weight were investigated.

Dynamic surface tension comparison of colloidal unimolecular polymers with different hydrophilic groups: Sulfonate, carboxylate, and quaternary amine

249th National Meeting (2015)

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