Abstract
A new block copolymer composed of polyamide as outer segments and polyoxyethylene as an inner segment was prepared by the anionic polymerization of a bicyclic oxalactam, 8-oxa-6-azabicyclo[3.2.1]octan-7-one. A polyoxyethylene having terminal isocyanate groups was used as an activator obtained from polyoxyethylene glycol and an excess of tolylene-2,4-diisocyanate. A hydrophilic membrane was easily obtained by casting from a chloroform–methanol (10: 1) solution of the resulting block copolymer. The interaction of the copolymer membrane with water molecules was discussed in relation to the adsorption and permeation of water.
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Hashimoto, K., Sumitomo, H. & Yamamori, H. Preparation of a Novel Block Copolymer by the Anionic Polymerization of a Bicyclic Oxalactam Activated with Isocyanate-Terminated Polyoxyethylene and Characterization of Its Hydrophilic Membrane. Polym J 17, 679–686 (1985). https://doi.org/10.1295/polymj.17.679
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DOI: https://doi.org/10.1295/polymj.17.679