Abstract
Four-component pentablock copolymers of the DSD′AD type, poly(isoprene-b-styrene-b-butadiene-b-(4-vinylbenzyl)imethylamine-b-isoprene) and poly(butadiene-b-styrene-b-isoprene-b-(4-vinylbenzyl)dimethylamine-b-butadiene), were prepared by a sequential anionic polymerization and the morphologies of the films cast from benzene, dioxane, and cyclohexane solutions of the samples were studied by electron microscopy and viscoelastic spectrometry. Three-layer lamellar structures were observed for the benzene- and dioxane-cast films just like as the case for ISIAI pentablock copolymers. Charge-mosaic membranes prepared by quaternizing, cross-linking, and sulfonating the films exhibited better refined microstructures and better performance than those prepared from ISIAI block copolymers.
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Takahashi, Si., Matsumura, K., Toda, M. et al. Artificial Membranes from Multiblock Copolymer IV. Four-Component Pentablock Copolymers of the DSD′AD Type Usable to Fabricate a Charge-Mosaic Membrane. Polym J 18, 41–49 (1986). https://doi.org/10.1295/polymj.18.41
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DOI: https://doi.org/10.1295/polymj.18.41