PULSED RADIATIVE CHANGE IN ABSORPTION OF POLY-METHYL METHACRYLATE IN THE VISIBLE SPECTRUM

Authors
TARABAN VB ZHDANOV GS SMOLYANSKII AS KLINSHPONT ER MILINCHUK VK
Citation
Vb. Taraban et al., PULSED RADIATIVE CHANGE IN ABSORPTION OF POLY-METHYL METHACRYLATE IN THE VISIBLE SPECTRUM, High energy chemistry, 27(5), 1993, pp. 366-370
Citations number
12
Categorie Soggetti
Chemistry Physical
Journal title
High energy chemistry → ACNP
ISSN journal
00181439
Volume
27
Issue
5
Year of publication
1993
Pages
366 - 370
Database
ISI
SICI code
0018-1439(1993)27:5<366:PRCIAO>2.0.ZU;2-3
Abstract
A study was made of the dynamics of change in radiation-induced absorp tion in the 400-600-nm region for polymethyl methacrylate samples irra diated with doses up to 5-500 kGy (D)= 3 Gy/sec) while stored in air a t room temperature. It was found that the absorption was caused not on ly by the long-wavelength portions of intense absorption bands of the radiolysis products with maxima in the near-UV region, but also by the absorption of terminal alkyl (maximum at 410-412 nm) and allyl (maxim um at 425 nm) macroradicals.