Biocides Based on Nanosilver - Efficiency and Influence on Silk

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60461373%3A22310%2F15%3A43901126" target="_blank" >RIV/60461373:22310/15:43901126 - isvavai.cz</a>

Result on the web

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DOI - Digital Object Identifier

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Result language

angličtina

Original language name

Biocides Based on Nanosilver - Efficiency and Influence on Silk

Original language description

Historical and mainly archaeological textiles are vulnerable to biodeterioration. The biodeterioration of textile materials cannot be considered in isolation, it occurs with other physical and chemical deterioration processes. There are many chemical and physical methods of disinfection or disinfestation. Silver nanosuspensions seem to be one of new possibilities to protect the historical objects from biological attack. The silver nanosuspensions can be prepared by reduction from the silver nitrate solution or by electrolysis. This contribution (poster) deals with the influence of silver nanosuspensions (disinfection agents) on silk degradation. Three types of silver nanosuspensions were tested. One of them was a commercial product prepared by electrolitic method (US Research Nanomaterials) and two nanosuspensions were prepared at J. Heyrovsky Institute of Physical Chemistry of the ASCR by different reduction systems (borohydride and xylose). Tested agents were applied by immersion of silk samples into water suspensions of silver nanoparticles. The biocide efficiency was tested on three types of molds (Cladosporium, Aspergillus niger, Penicillium brevicompactum). To study the degradation of silk various methods of artificial aging were used. The influence of tested nanosuspensions on silk degradation was evaluated by measurements of colorimetry, viscometry and FTIR spectroscopy. From the gained results it is possible to say that efficiency of tested nanosuspensions is function of their concentration, particle size and the method of preparation.

Czech name

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Czech description

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Type

O - Miscellaneous

CEP classification

AL - Art, architecture, cultural heritage

OECD FORD branch

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Project

<a href="/en/project/DF11P01OVV012" target="_blank" >DF11P01OVV012: New materials and technologies for the conservation of the materials of historical monuments and the preventive care</a><br>

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year

2015

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů