Articolul precedent |
Articolul urmator |
484 7 |
Ultima descărcare din IBN: 2023-09-14 02:16 |
Căutarea după subiecte similare conform CZU |
025.85 (10) |
Библиотечное дело. Библиотековедение (690) |
SM ISO690:2012 ARDELEAN, Elena. Materials and techniques used for consolidation old paper supports. In: Patrimoniul cultural de ieri – implicații în dezvoltarea societății durabile de mâine, Ed. 3, 11-12 februarie 2021, Chişinău. Chișinău, Republica Moldova: 2021, Ediția 3, pp. 26-27. ISSN 2558 – 894X. |
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Patrimoniul cultural de ieri – implicații în dezvoltarea societății durabile de mâine Ediția 3, 2021 |
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Conferința "Yesterday’s heritage – implications for the development of tomorrow’s sustainable society" 3, Chişinău, Moldova, 11-12 februarie 2021 | ||||||
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CZU: 025.85 | ||||||
Pag. 26-27 | ||||||
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Rezumat | ||||||
In the field of restoring old books and paper documents, a common situation is when paper needs to be consolidated because it has lost some of the gluing agent used in its manufacture. The loss of the gluing agent of the paper, consequence of the action of humidity, of the microbiological degradation, of the solubilization of the gluing agents after the wet cleaning operation, has serious effects on the physical integrity and on the physical-mechanical properties of the paper documents. The paper whose gluing agent has been affected becomes absorbent, brittle, is much more exposed to physical, chemical and biological degradation factors, and in the absence of proper consolidation, it risks irreversible damage. Over time, the attention of restorers has turned to cellulose ethers, which through their composition, structure and properties have proven effective in preserving and restoring collections of paper in archives, libraries and museums. However, cellulose ethers do not give the paper antimicrobial protection, so other proposals have emerged regarding materials that could be used in consolidation treatments. One of these materials is chitosan. Chitosan is biodegradable, biocompatible and non-toxic with many medical applications. Studies have shown the effectiveness of chitosan as a multifunctional additive in papermaking, with positive effects on both the manufacturing process and the properties of the paper (improving the adhesion and increasing the tensile strength of the paper). In addition to these effects of chitosan in the manufacture of paper, attention is drawn to the antimicrobial activity of it and its derivatives. This last property of chitosan is particularly important in document restoration treatments, the results of studies conducted so far being particularly promising |
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