Abstract
The block copolymer composed of basic and acidic sequences, poly(N,N-dimethylaminopropylacrylamide-b-acrylic acid), was prepared by a mechanochemical method. Poly(N,N-dimethylaminopropylacrylamide) (PDAPA) was cleaved by ultrasonic irradiation in an aqueous solution of sodium acrylate. The block copolymer was separated as a precipitate from the reaction solution by controlling pH, and then fractionated by stepwise precipitations. The ratio, number of acidic monomer units/number of basic monomer units, was in the range of 0.3—145. The block copolymer showed microphase separation when it was cast from basic (NaOH aq.) or acidic (HCl aq.) solutions.
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Fukutomi, T., Horikoshi, T. & Ishizu, K. Sequential Copolymers Composed of Basic and Acidic Sequences I. Poly(N,N-dimethylaminopropylacrylamide-b-acrylic acid). Polym J 16, 619–624 (1984). https://doi.org/10.1295/polymj.16.619
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DOI: https://doi.org/10.1295/polymj.16.619
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