Preparation of Poly (methacrylic acid)/Polystyrene Composite Particles and Morphology Control

Polymethylacrylic acid (PMA)/Polystyrene (PS) composite particles with different morphologies were prepared using reactive Y-shape surfactant AOA by controlling the content of surfactant and weight ratio of styrene/kerosene. High weight percentage of surfactant and weight ratio of styrene/kerosene lead to the structure of one large PS particle in which many PMA micro-gels were embedded, while low weight percentage of surfactant and weight ratio of styrene/kerosene led to composite particles with core/shell morphology. The formation mechanism of the particles with different morphologies was discussed in this article.