Shape of the particles of PS/ PMMA with different crosslinking agent by dispersion polymerization

Preparation of nonspherical (Raspberry-like morphology) particles via dispersion polymerization of Methyl Methacrylate with crosslinking agent monomers such as 1,6 Hexandiol Diacrylate, 1,4 Butandiol Dimethacrylate, Divinyl Benzene and 2-Ethyl 2- Hydroxymethyl 1,3 Propanediol Trimethacrylate in the presence of Styrene particles initiated by AIBN in ethanol media and using PVP K-30 as a dispersant agent was discussed..These particles showed very good morphological stability at room temperature, but they changed to the spherical ones when heat treated at 65 C for 24 h in ethanol media. The experimental results showed that using bifunctional monomers like 1, 6 Hexandiol Diacrylate and 1,4 Butandiol Dimethacrylate and trifunctional monomer like 2-Ethyl 2- Hydroxymethyl 1,3 PropanediolTrimethacrylate give raspberry morphology

Keywords:

Dispersion polymerization , Raspberry morphology , Crosslinking agent , Bifunctional and Trifunctional monomers