Syntheses, Properties, and Aggregation Behavior of Novel Carboxylate-Based Silicone Surfactants

Lina Meng; Wenyu Wang; A P Lei Li; Shengyu Feng

doi:10.1002/cplu.202200337

Syntheses, Properties, and Aggregation Behavior of Novel Carboxylate-Based Silicone Surfactants

Chempluschem. 2022 Dec;87(12):e202200337. doi: 10.1002/cplu.202200337.

Authors

Lina Meng¹, Wenyu Wang², A P Lei Li¹, Shengyu Feng¹

Affiliations

¹ School of Chemistry and Chemical Engineering, Shandong University, Jinan, 250199, Shandong, P. R. China.
² Jinan Agricultural Product Quality and Safety Center, Jinan, 250000, Shandong, P. R. China.

PMID: 36539258
DOI: 10.1002/cplu.202200337

Abstract

Two new anionic silicone surfactants were synthesized for the first time from dichloromethylvinylsilane or trichlorovinylsilane through hydrolysis-condensation and then thiol-ene reactions. Their structures were characterized by FT-IR, ¹ H NMR and ESI-MS. The surface tension (γ), critical aggregate concentration (CAC), surface pressure at CAC ( $Π_{C A C}$ ) and minimum surface area per surfactant molecule ( $A_{min}$ ) were studied by surface tension and electrical conductivity, demonstrating their high surface activity at the gas/liquid interface. Transmission electron microscopy measurements showed that uniform spherical aggregates former in aqueous solution for both surfactants. Moreover, the size of the aggregates was determined to be in the range from 50 to 300 nm by dynamic light scattering.

Keywords: aggregation behavior; anions; carboxylate silicone surfactants; surfactants; “click” reaction.

Publication types

Research Support, Non-U.S. Gov't

MeSH terms

Carboxylic Acids*
Hydrolysis
Spectroscopy, Fourier Transform Infrared
Surface Tension
Surface-Active Agents* / chemistry

Substances

Surface-Active Agents
Carboxylic Acids