Related Experiment Video
Updated: Sep 12, 2025

Anionic Polymerization of an Amphiphilic Copolymer for Preparation of Block Copolymer Micelles Stabilized by π-π Stacking Interactions
Published on: October 10, 2016
Highly phase-separated alternating copolymer of alkyl vinyl ether and sulfonic acid group-containing trifluoro vinyl
Kaishi Hori1, Shoji Miyanishi2, Takeo Yamaguchi2
1Research Laboratory of Advanced Science & Technology, Corporate Research & Development, Asahi Kasei Corporation 2-1 Samejima, Fuji Shizuoka 416-8501 Japan.
Abstract:
This study explores the development of novel cation exchange membranes (CEMs) by synthesizing alternating copolymers of perfluorosulfonic acid monomers and alkyl vinyl ethers with varying chain lengths. Unlike traditional Nafion-based CEMs, which form cluster-channel morphologies, the newly synthesized copolymers exhibit well-defined lamellar structures. Small-angle X-ray scattering (SAXS) and transmission electron microscopy (TEM) analyses revealed that increasing the alkyl chain length enhances the area of these structures. Moreover, self-diffusion coefficient measurements by PFG-NMR showed that water diffusivity increased with longer side chains, despite a decrease in ion exchange capacity (IEC). This inverse relationship highlights the importance of morphological control in optimizing membrane transport properties. The findings demonstrate that integrating hydrocarbon and fluorocarbon components enables the design of distinct phase-separated structures, expanding the landscape of structure-property relationships in ion-conducting materials. These insights offer new strategies for engineering high-performance membranes for energy and water-related applications.
Related Concept Videos
[3,3] Sigmatropic Rearrangement of Allyl Vinyl Ethers: Claisen Rearrangement
Free-Radical Chain Reaction and Polymerization of Alkenes
Polymer Classification: Stereospecificity
Olefin Metathesis Polymerization: Overview
Ruthenium-based Grubbs catalyst is the most commonly used catalyst for olefin metathesis polymerization. Grubbs catalyst consists...
Radical Chain-Growth Polymerization: Mechanism
Ion Exchange

