Degradation of poly(glutamic acid-co-tyrosine) in the solid state by gamma-radiation at 77 and 303 K

Hill D.J.T., Ho S.Y., O'Donnell J.H. and Pomery P.J. (1990) Degradation of poly(glutamic acid-co-tyrosine) in the solid state by gamma-radiation at 77 and 303 K. International Journal of Radiation Applications and Instrumentation. Part, 36 3: 467-474. doi:10.1016/1359-0197(90)90035-G


Author Hill D.J.T.
Ho S.Y.
O'Donnell J.H.
Pomery P.J.
Title Degradation of poly(glutamic acid-co-tyrosine) in the solid state by gamma-radiation at 77 and 303 K
Journal name International Journal of Radiation Applications and Instrumentation. Part
ISSN 1359-0197
Publication date 1990-01-01
Year available 2002
Sub-type Article (original research)
DOI 10.1016/1359-0197(90)90035-G
Open Access Status
Volume 36
Issue 3
Start page 467
End page 474
Total pages 8
Publisher JOHN WILEY & SONS LTD
Language eng
Abstract The degradation of poly-L-glutamic acid, two copolymers of L-glutamic acid and L-tyrosine and poly-L-tyrosine by γ-radation at 77 and 303 K has been investigated. The volatile radiolysis products and their yields have been measured at 303 K and the radical intermediates have been identified at 77 and 303 k, and the radical yields determined from ESR spectra. The scission and crosslinking yields have been determined from molecular weight measurements by gel permeation chromatography. The tyrosine residues in the copolymers lead to reduced yields of volatile products, radical intermediates and scission as a result of the protective effect of these aromatic units.
Keyword Spectroscopy
Spectroscopy
SPECTROSCOPY
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status Unknown

Document type: Journal Article
Sub-type: Article (original research)
Collection: Scopus Import - Archived
 
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