In:
Journal of Polymer Science Part A: General Papers, Wiley, Vol. 2, No. 9 ( 1964-09), p. 4105-4112
Abstract:
A brief study of the homopolymerization of norbornadiene indicated that pre‐gel polymer is limited to product having reduced viscosities below 0.2 dl./g. Pre‐gel polymer of 17,000 molecular weight was isolated and characterized: pre‐gel polynorbornadiene is soluble in benzene or chloroform, softens at 220–240°C., is thermosetting and shows poor molding characteristics. A cast rod of polynorbornadiene was found to have a heat distortion temperature of 186°C. and a flexural strength of 13,300 psi. Copolymer reactivity ratios of norbornadiene (M 1 ) determined with vinyl acetate were r 1 = 1.3 and r 2 = 0.8; with p ‐chlorostyrene, r 1 ≈ 0.01 and r 2 ≈ 85. Thermal behavior of several copolymers was determined.
Type of Medium:
Online Resource
ISSN:
0449-2951
,
1542-6246
DOI:
10.1002/pol.1964.100020928
Language:
English
Publisher:
Wiley
Publication Date:
1964
detail.hit.zdb_id:
3004641-5
detail.hit.zdb_id:
1473448-5
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