Waterborne toughened Polystyrene Nanoparticles through High-Solids Miniemulsion Polymerization

RONCO, LUDMILA I.; MINARI, ROQUE J.; MEIRA, GREGORIO R.; GUGLIOTTA, LUIS M.

Puerto de Gallinas

Simposio; XIV Latin American Symposium on Polymers/XII Ibero American Congress on Polymers (XIV SLAP/XII CIP 2014); 2014

Sociedad Brasilera de Polimeros

Polystyrene nanoparticles toughened with polybutadiene were synthesized by miniemulsion polymerization of 50% solids content. The effects of recipes and reaction conditions on the polymerization kinetics, polymer microstructure, particle morphology, and mechanical properties of the produced thermoplastic materials, are discussed. The final material characteristics are strongly dependant on the chemical nature of the employed initiator, and interpretation for these observed effects is presented. The obtained nanostructured polystyrenes exhibit mechanical properties similar to those of the commercial HIPS, but with the typical advantages of polymerizations in dispersed medium such as low environmental impact, high monomer conversion, and fast heat transfer.