In:
British Polymer Journal, Wiley, Vol. 19, No. 3-4 ( 1987-05), p. 319-323
Abstract:
2,2′‐Azo‐bis‐isobutyronitrile (AIBN), enriched in its methyl groups with carbon‐13, has been used to initiate copolymerizations at 60°C of 2‐vinylpyridine (2VP) with methyl methacrylate (MMA). Examination by 13 C n.m.r. of the end groups in the copolymers indicates that 2VP is 2–4 times as reactive as MMA towards the 2‐cyano‐2‐propyl radical. The presence of either 4‐styrylpyridine of 2,6‐distyrylpyridine in MMA or styrene causes considerable alteration of the 13 C n.m.r. signals from C 6 H 5 13 COO—end groups in polymers prepared at 60°C using benzoyl peroxide as initiator but has no effect on the signals from ( 13 CH 3 ) 2 C(CN)— end groups derived from AIBN. It is deduced that the styrylpyridines are rather reactive towards the benzoyloxy radical but are unreactive towards the 2‐cyano‐2‐propyl radical.
Type of Medium:
Online Resource
ISSN:
0007-1641
,
1934-256X
DOI:
10.1002/pi.4980190314
Language:
English
Publisher:
Wiley
Publication Date:
1987
detail.hit.zdb_id:
2004753-8
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