Biocides Based on Nanosilver - Efficiency and Influence on Silk

Kód výsledku v 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>

Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Biocides Based on Nanosilver - Efficiency and Influence on Silk

Popis výsledku v původním jazyce

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.

Název v anglickém jazyce

Biocides Based on Nanosilver - Efficiency and Influence on Silk

Popis výsledku anglicky

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.

Druh

O - Ostatní výsledky

CEP obor

AL - Umění, architektura, kulturní dědictví

OECD FORD obor

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Projekt

<a href="/cs/project/DF11P01OVV012" target="_blank" >DF11P01OVV012: Nové materiály a technologie pro konzervaci materiálů památkových objektů a preventivní památkovou péči</a><br>

Návaznosti

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

Rok uplatnění

2015

Kód důvěrnosti údajů

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