Preparation\nand Properties Improvement of Decynediol-Ethoxylate-Modified\nTrisiloxane Surfactant

Silicone surfactants are increasingly used in the industrial\nfield\ndue to their advantages such as low surface energy, stable performance,\nand good biocompatibility. However, many polyether-modified silicone\nsurfactants’ foam stability and easy hydrolysis in non-neutral\naqueous systems limit their application in many fields. In this article,\nthe decynediol-ethoxylate chain segment was grafted onto heptamethyltrisiloxane\nto synthesize a modified trisiloxane surfactant (G2). FT-IR and <sup>1</sup>H NMR characterized its structure. Its surface activity, aggregation\nbehavior, and wetting and spreading properties in water were studied\nby using instruments such as a surface tension meter, transmission\nelectron microscope (TEM), dynamic light scattering (DLS), and contact\nangle tester. G2 can reduce the surface tension of water to 19.24\nmN/m at a lower CMC (40.44 mg/L), and the foaming properties and hydrolysis\nstability of decynediol-ethoxylate-modified trisiloxane (G2) in water\nare significantly improved compared with allyl-polyoxyethylene-ether-modified\ntrisiloxane (X5).