Treatment of paper with basic agents in alcohols and supercritical carbon dioxide to neutralize acid and prolong storage time |
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| Authors: | T. V. Dobrodskaya P. A. Egoyants V. K. Ikonnikov N. D. Romashenkova S. A. Sirotin S. A. Dobrusina N. I. Podgornaya |
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| Affiliation: | (1) Prikladnaya Khimiya Federal State Unitary Enterprise, State Scientific Center of the Russian Federation, St. Petersburg, Russia;(2) Russian National Library, St. Petersburg, Russia |
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| Abstract: | The efficiency of treatment of paper prepared from 100% sulfite cellulose with basic agents (solutions of magnesium alkoxides or methoxycarbonate in alcohols or in supercritical carbon dioxide) to neutralize acid was studied, as influenced by the following factors: concentration of a basic agent in the neutralizing solutions, repetition of impregnation of paper with a neutralizing solution and hydrolysis of the neutralizing agent after each impregnation cycle, temperature and pressure of supercritical carbon dioxide, mixing of a neutralizing agent with supercritical CO2, and conditions (dynamic or static) the paper treatment with a neutralizing solution.Translated from Zhurnal Prikladnoi Khimii, Vol. 77, No. 12, 2004, pp. 2042–2046.Original Russian Text Copyright © 2004 by Dobrodskaya, Egoyants, Ikonnikov, Romashenkova, Sirotin, Dobrusina, Podgornaya. |
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