A P(St/BA) latex containing KAl(OH)₂CO₃ nano particles was prepared by emulsion polymerization method. The results of Zeta potential analysis, particle size analysis, scanning electron microscopy (SEM) and transmission electron microscopy (TEM) confirm that KAl(OH)₂CO₃ nano particles are well dispersed in the latex particles and show a core shell structure. The enhanced thermal stability of the composites was measured by thermogravimetric analysis (TGA) and indicated that the developed nanocomposite has higher decomposition onset temperature. The resulting latex may have potential application for flame retarded paints.

Key words: KAl(OH)₂CO₃ nano particle, emulsion polymerization, thermal stability