Gamma irradiation of protein-based textiles for historical collections decontamination

In order to investigate the effect of gamma rays on cultural heritage materials, samples of silk and wool fabrics were subjected to accelerated ageing testing and then irradiated with different gamma-ray doses: 10 and 25 kGy. In the data analysis, combining thermal analysis (TG and DTG), infrared sp...

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Bibliographic Details
Published in:Journal of thermal analysis and calorimetry 2014-11, Vol.118 (2), p.977-985
Main Authors: Geba, Maria, Lisa, Gabriela, Ursescu, Cristina Marta, Olaru, Angelica, Spiridon, Iuliana, Leon, Ana Lacramioara, Stanculescu, Ioana
Format: Article
Language:English
Subjects:
Analysis
Analytical Chemistry
Chemistry
Chemistry and Materials Science
Collection
Fabrics
Gamma rays
Infrared spectroscopy
Inorganic Chemistry
Irradiation
Measurement Science and Instrumentation
Physical Chemistry
Polymer Sciences
Silk
Textiles
Thermal analysis
Wool
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Summary:In order to investigate the effect of gamma rays on cultural heritage materials, samples of silk and wool fabrics were subjected to accelerated ageing testing and then irradiated with different gamma-ray doses: 10 and 25 kGy. In the data analysis, combining thermal analysis (TG and DTG), infrared spectroscopy (FTIR-ATR) and mechanical tests allowed us to explore the changes in physical and chemical features for silk and wool, in relationship to the radiation doses. This analytical protocol offers a way to examine the behaviour of the textiles made of wool and silk within museum collections and their response to gamma-rays irradiation treatment. An exposure to a dose of 10 kGy did not cause significant changes in the tested properties; however, higher doses initiated irreversible loss in the physical and chemical stability of protein-based fabrics. Increasing the irradiation dose above 10 kGy has drastic effects in the loss of elasticity and the mechanical resistance of the tested yarns.
ISSN:1388-6150
1588-2926
1572-8943
DOI:10.1007/s10973-014-3988-8