New amphiphilic diblock copolymers: surfactant properties and solubilization in their micelles

Langmuir : the ACS Journal of Surfaces and Colloids
Sébastien Garnier, André Laschewsky

Abstract

Several series of amphiphilic diblock copolymers are investigated as macrosurfactants in comparison to reference low-molar-mass and polymeric surfactants. The various copolymers share poly(butyl acrylate) as a common hydrophobic block but are distinguished by six different hydrophilic blocks (one anionic, one cationic, and four nonionic hydrophilic blocks) with various compositions. Dynamic light scattering experiments indicate the presence of micelles over the whole concentration range from 10(-4) to 10 g x L(-1). Accordingly, the critical micellization concentrations are very low. Still, the surface tension of aqueous solutions of block copolymers decreases slowly but continuously with increasing concentration, without exhibiting a plateau. The longer the hydrophobic block, the shorter the hydrophilic block, and the less hydrophilic the monomer of the hydrophilic block is, the lower the surface tension is. However, the effects are small, and the copolymers reduce the surface tension much less than standard low-molar-mass surfactants. Also, the copolymers foam much less and even act as anti-foaming agents in classical foaming systems composed of standard surfactants. The copolymers stabilize O/W emulsions made of methyl palmit...Continue Reading

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Citations

Mar 13, 2014·Langmuir : the ACS Journal of Surfaces and Colloids·Arjun GhoshYoshiyuki Saruwatari
Jun 23, 2009·Journal of Colloid and Interface Science·Wei ZhangGuoyong Wang
Feb 22, 2012·Journal of Colloid and Interface Science·Wei ZhangTianzhuang Wang
Jan 27, 2017·Molecules : a Journal of Synthetic Chemistry and Natural Product Chemistry·Jiachen MaShuxiang Zhang
Feb 22, 2017·Langmuir : the ACS Journal of Surfaces and Colloids·Jonathan C PeggJulian Eastoe
Jun 21, 2008·Biomacromolecules·Yannie ChanVolga Bulmus
Aug 27, 2009·Langmuir : the ACS Journal of Surfaces and Colloids·Manuela SchumacherAxel H E Müller
Jul 18, 2019·Langmuir : the ACS Journal of Surfaces and Colloids·Christine M PapadakisAndré Laschewsky
Jul 17, 2015·Chemical Reviews·Patrizio RaffaAntonius A Broekhuis

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