Synthesis and Characterization of Vinyl-Silicone Microemulsion

The stable vinyl-silicone microemulsion was synthesized by D4 open-ring polymerization by the catalysis of dodecylbenzenesulfonic acid with nonionic surfactant as emulsifier and KH570 as end-capping reagent.The effects of the amount of nonionic emulsifier,the amount of catalyst,the amount of D4 monomer and KH570 on microemulsion properties were systemically investigated.The result showed that the stabile vinyl-silicone microemulsion could be prepared when the amount of emulsifiers A was 1.2%,catalyst was 2.4%,D4 monomer was 20% and the KH570 was 4%.Under such conditions,the microemulsion had a conversion rate of up to 85.63%,an average particle size of 48.95nm and good Ca2+ stability and mechanical stability.