Abstract
A2B-type periodic copolymers with the structure, –[–CH2CH2–CH2CH2–CH2CXY–]– were synthesized by hydrogenating various alternating butadiene–acrylic copolymers. Substituents X, Y were Cl, COOCH3; H, COOCH3; CH3, COOC2H5; CH3, COOCH(CH3)2; CH3, COOC6H5; CH3, COOCH2C6H5; and H, CN. Identification of the structure and tensile properties of the copolymers are described. A periodic copolymer was compared with a random copolymer of the same composition. The periodic copolymer showed crystalline melting and higher glass-transition temperatures and was a harder and less extensible material than the random copolymer.
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Yokota, K., Kougo, T. & Hirabayashi, T. Syntheses and Properties of Periodic Copolymers. Polym J 15, 349–354 (1983). https://doi.org/10.1295/polymj.15.349
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DOI: https://doi.org/10.1295/polymj.15.349