Effect of siloxane backbone length on butynediol-ethoxylate based polysiloxanes

Three butynediol-ethoxylate based polysiloxanes (PSi-EOs) with different lengths of siloxane backbone were successfully synthesized and characterized. Such surfactants exhibit powerful surface activity, unique aggregation behavior, outstanding propensity for spreading and wetting, and significantly low foaming property in aqueous solution. The siloxane backbone length of PSi-EO plays an important role in their physicochemical properties and application performances, which may be useful to design and synthesize novel polysiloxane amphiphiles and develop their interesting practical applications concerning agricultural adjuvants, home care products and coatings.