ISSN print edition: 0366-6352 ISSN electronic edition: 1336-9075 Registr. No.: MK SR 9/7 Published monthly

Synthesis of cleavable silicone surfactant for water-repellent application

Rohan S. Mestri, Amit P. Pratap, Khushboo H. Panchal, Komal Gamot, and Kirti A. Datir

Department of Oils, Oleochemicals and Surfactants Technology, Institute of Chemical Technology, University Under Section 3 of UGC Act 1956; Formerly UDCT/UICT, Mumbai, India

E-mail: amitpratap2001@gmail.com

Received: 19 May 2019  Accepted: 12 October 2019

Abstract:

Polymeric silicone-based surfactants were prepared by the reaction of polyethylene glycol, maleic anhydride, polydimethylsiloxane, silicone oil, titanium isopropoxide, and sodium hydrogen sulfite. These surfactants showed water-repellent properties when cleaved by different buffer solutions. The synergetic effect of silicone oil-based surfactants and siloxane-based surfactants was studied using different characterization techniques for the surfactants. The hydrophobic properties of cleaved silicone-based surfactants were studied by measuring the contact angle measurement. The polymeric silicone surfactants are stable in nature. The structures of various stages of reaction were confirmed by thin-layer chromatography, Fourier-transform infrared spectroscopy, ultraviolet spectra, and nuclear magnetic resonance analysis. The surface-active properties of surfactants like surface tension and critical micelle concentration as well as foaming and wetting characteristics were also studied. This water-soluble surfactant had low foaming properties and can be used in textile, agriculture, petroleum and paint industries. The cleaved form of silicone surfactant was used for water-repellent application in textile and paint industries.

Keywords: Silicone surfactants; Hydrolysis in a buffer; Water repellent; Contact angle

Full paper is available at www.springerlink.com.

DOI: 10.1007/s11696-019-00961-0

Chemical Papers 74 (5) 1407–1416 (2020)