UV degradation of bivoltine silk fiber: A positron annihilation study

Ramgopal, G. and Ramani, R. and Ramachandra, P. and Ranganathaiah, C. (1998) UV degradation of bivoltine silk fiber: A positron annihilation study. European Polymer Journal, 34 (10). pp. 1423-1427. (In Press)

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Official URL: https://doi.org/10.1016/S0014-3057(97)00284-X


The effects of ultra-violet (UV) irradiation on the microstructure of semicrystalline bivoltine silk fibers have been investigated using the positron annihilation lifetime (PAL) technique. Lifetime results indicate that in the early stages of UV irradiation, chain scission leads to free radicals formation. Cross-linking is the main process at longer radiation time td UV. Present results also show that silk-I type with a low degree of molecular orientation changes to silk-II type on UV irradiation. (C) 1998 Elsevier Science Ltd. All rights reserved.

Item Type: Article
Subjects: D Physical Science > Physics
Divisions: Department of > Physics
Depositing User: Users 23 not found.
Date Deposited: 10 Jun 2021 05:03
Last Modified: 10 Jun 2021 05:03
URI: http://eprints.uni-mysore.ac.in/id/eprint/16693

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