ISSN:
0360-6376
Keywords:
Physics
;
Polymer and Materials Science
Source:
Wiley InterScience Backfile Collection 1832-2000
Topics:
Chemistry and Pharmacology
Notes:
On electrochemical initiation of alternating copolymerizations of styrene-acrylonitrile (AN) and styrene-diethyl fumarate (DEF) in the presence of ZnCl2, radical anions of AN-ZnCl2 and DEF-ZnCl2 complexes produced at the cathode were assumed to initiate copolymerization. In analogy with the cathode-initiated copolymerization, the radical anions of AN-ZnCl2 and DEF-ZnCl2, generated with the carbanions such as sodium naphthalene, disodium α-methylstyrene tetramer dianion, and butyllithium, were also found to produce alternating copolymers of styrene-AN and styrene-DEF. On the contrary, no polymers were obtained from methyl methacrylate (MMA)-styrene and methacrylonitrile (MAN)-styrene in the presence of ZnCl2 either with carbanions or by electrochemical reduction. Styrene-MAN-ZnCl2 yielded an alternating copolymer with carbanions upon introduction of oxygen.
Additional Material:
6 Ill.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1002/pol.1978.170160401
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