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Home  >  Journal list  >  Polymer Journal  >  Vol.13  No.7 (1981)  >  pp.671-678

Polymer Journal
<<Previous article Vol.13  No.7 (1981)   pp.671 - 678 Next article>>

Radical Cyclocopolymerization of Divinyl Ether Derivatives with Maleic Anhydride. The Structure Determination of the Alternating Copolymers by 13C-NMR Spectroscopy

Mitsuo Tsukino1)2) and Toyoki Kunitake1)2)
1) Department of Chemical Engineering, Kitakyushu Technical College
2) Department of Organic Synthesis, Faculty of Engineering, Kyushu University


ABSTRACT:  Radical copolymerizations of cis-propenyl vinyl ether, 2-methylpropenyl vinyl ether and cis-dipropenyl ether with maleic anhydride were carried out, and completely cyclized, and alternating copolymers were obtained with the 1: 2 composition of divinyl ethers and maleic anhydride. 13C-NMR spectroscopic data indicated that the polymers contained in common the bicyclic unit composed of one molecule of each monomer and the maleic anhydride unit. The bicyclic unit was characterized by the cis junction and the trans ring closure, and the maleic anhydride unit was formed by trans opening of the double bond. Introduction of methyl substituents do not appear to affect the polymer structure, though assignments become less definite.


Keyword:
13C-NMR Spectroscopy/ Cyclopolymerization/ Divinyl Ethers/ Maleic Anhydride/ Alternating Copolymer

Published online: March 03, 2006
© Copyright, 2006 by The Society of Polymer Science, Japan

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