PHOTOCHEMICAL BEHAVIOR OF NATURAL SILK - II - MECHANISM OF FIBROIN PHOTODESTRUCTION

Authors
BALTOVA S VASSILEVA V
Citation
S. Baltova et V. Vassileva, PHOTOCHEMICAL BEHAVIOR OF NATURAL SILK - II - MECHANISM OF FIBROIN PHOTODESTRUCTION, Polymer degradation and stability, 60(1), 1998, pp. 61-65
Citations number
37
Categorie Soggetti
Polymer Sciences
Journal title
Polymer degradation and stability → ACNP
ISSN journal
01413910
Volume
60
Issue
1
Year of publication
1998
Pages
61 - 65
Database
ISI
SICI code
0141-3910(1998)60:1<61:PBONS->2.0.ZU;2-Q
Abstract
The change in the amino acid content of fibroin during irradiation was investigated. The amino acids glycine, alanine, tyrosine and serine a re shown to participate in the photo-oxidation of silk. The formation of chromophoic products is retarded in the presence of a UV-absorber. A linear correlation was established between yellowness index and the carbonyl group content in silk as a new relation in the theory of prot ein yellowing. The experimental evidence suggests that the formation o f alpha-ketoacyl groups is the main mechanism of the photochemical beh aviour of fibroin. (C) 1998 Elsevier Science Limited. All rights reser ved.