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Updated: Aug 19, 2026

Anionic Polymerization of an Amphiphilic Copolymer for Preparation of Block Copolymer Micelles Stabilized by π-π Stacking Interactions
Published on: October 10, 2016
Effect of polyoxypropylene chain length on the critical micelle concentration of propylene oxide-ethylene oxide block
1Department of Chemical Engineering, Zhejiang University, Hangzhou 310027, China. zhiguozhang2004@yahoo.com.cn
Abstract:
In this work, the surface activity of block copolymer nonionic surfactants (RPE) has been determined, i.e., critical micelle concentration (CMC), surface excess concentration (gamma), surface area demand per molecule (A), surface tension at CMC (gamma(CMC)). A linear decrease of ln[CMC] vs number of oxypropylene units in copolymer molecule was observed. The change in the work of cohesion per oxypropylene group when passing from molecular into micellar state, calculated from the Shinoda equation, was 0.43 kT for the studied compounds.
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