GAMMA-RAY POLYMERIZATION OF URETHANE-SUBSTITUTED DIACETYLENES - REACTIVITY AND CHAIN LENGTHS

Authors
SPAGNOLI S BERREHAR J LAPERSONNEMEYER C SCHOTT M RAMEAU A RAWISO M
Citation
S. Spagnoli et al., GAMMA-RAY POLYMERIZATION OF URETHANE-SUBSTITUTED DIACETYLENES - REACTIVITY AND CHAIN LENGTHS, Macromolecules, 29(17), 1996, pp. 5615-5620
Citations number
23
Categorie Soggetti
Polymer Sciences
Journal title
Macromolecules → ACNP
ISSN journal
00249297
Volume
29
Issue
17
Year of publication
1996
Pages
5615 - 5620
Database
ISI
SICI code
0024-9297(1996)29:17<5615:GPOUD->2.0.ZU;2-K
Abstract
gamma-Ray polymerization of two diacetylenes (3BCMU and 4BCMU) was stu died, in particular at low doses below 5000 rad. Reactivity is very hi gh, leading to large polymerization G values of 2.4 x 10(4) and 6.9 x 10(4), respectively. Molecular weight distributions were measured for 4BCMU, leading to M(n) approximate to 2.6 x 10(6) (chain length 2.5 mu m) with small dispersion. A large chain initiation G value, G(i) = 14 , is derived.