Synthesis and properties of carboxyl-modified polyether block silicone surfactants

A series of carboxyl-modified polyether block silicone (CPES) surfactants were synthesized by the polymerization of 1,1,3,3-tetramethyldihydrodisiloxane, D4, allyl polyoxyethylene and sodium chloroacetate. The structures of the surfactants were characterized by IR and ¹H-NMR. Furthermore, the surface tension, wetting properties, foam properties, emulsifying properties and cleansing properties of the synthesized products were investigated. The results show that these compounds have high surface activity and good foaming stability. The wetting properties are general, but increasing temperature can improve the wetting ability of the product. Besides, CPES surfactants exhibit good emulsifying and cleaning ability.