ISSN:
1022-1352
Keywords:
Chemistry
;
Polymer and Materials Science
Source:
Wiley InterScience Backfile Collection 1832-2000
Topics:
Chemistry and Pharmacology
,
Physics
Notes:
The polymerization of ring-substituted trans-cinnamonitriles has been studied with radical initiators such as peroxides and azo compounds at 60-130°C. 3,4,5-Trimethoxycinnamonitriles (3,4,5-MOCN) yield a homopolymer with a molecular weight of about 104 in contrast to the unsubstituted cinnamonitrile. The activation energy of the 3,4,5-MOCN polymerization is 106 kJ/mol and the polymerization rate is proportional to the 0,45th power of the initiator concentration. Radical copolymerization of 3,4,5-MOCN yields copolymers with vinyl monomers such as styrene and acrylonitrile. ESR studies suggested that the primary radical from an azo initiator attacks at the olefinic carbon of the cinnamonitrile bearing the cyano group. Heating of the 3,4,5-MOCN homopolymer produces a ladder spin polymer with hydroaniline units in the main chain.
Additional Material:
5 Ill.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1002/macp.1994.021950217
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