caa a22 4500 378863509 CHVBK 20180305123352.0 cr unu---uuuuu 161128e200303 xx s 000 0 eng 10.1515/REST.2003.1 doi (NATIONALLICENCE)gruyter-10.1515/REST.2003.1 Paper Conservation Using Aqueous Solutions of Calcium Hydroxide/Methyl Cellulose: 1. Preparation of the solution [Elektronische Daten] [Franciska Sundholm, Maria Tahvanainen] Conservation du papier au moyen de solutions aqueuses d'hydroxyde de calcium et de méthylcellulose. 1. Préparation de la solution The results of the paper conservation treatment using Ca(OH)2/methyl cellulose solutions prepared by two different methods were estimated by measuring chemical, mechanical and optical properties of treated and untreated papers. The permanence of papers treated was tested by accelerated ageing. The results obtained showed that treatment with the solution prepared by mixing solid Ca(OH)2 with methyl cellulose solution (solid phase method, SPM) resulted in a higher alkaline reserve than the treatment with a solution prepared by mixing a solution of Ca(OH)2 with methyl cellulose solution (liquid phase method, LPM). The alkaline reserve deposited by SPM gave better protection during accelerating ageing. © 2003 K. G. Saur Verlag GmbH, Ortlerstr. 8, D-81373 München Sundholm Franciska Laboratory of Polymer Chemistry, P.O. Box 55, FIN-00014, University of Helsinki, Finland, Tel. +358-9-19150322, Fax +358-9-19150330 aut Tahvanainen Maria Laboratory of Polymer Chemistry, P.O. Box 55, FIN-00014, University of Helsinki, Finland, Tel. +358-9-19150322, Fax +358-9-19150330. E-mail: maria.tahvanainen@helsinki.fi aut Restaurator Walter de Gruyter GmbH & Co. KG 24/1(2003-03), 1-17 0034-5806 24:1<1 2003 24 REST https://doi.org/10.1515/REST.2003.1 text/html Onlinezugriff via DOI 1 research article jats NATIONALLICENCE 856 40 https://doi.org/10.1515/REST.2003.1 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Sundholm Franciska Laboratory of Polymer Chemistry, P.O. Box 55, FIN-00014, University of Helsinki, Finland, Tel. +358-9-19150322, Fax +358-9-19150330 aut NATIONALLICENCE 700 1- Tahvanainen Maria Laboratory of Polymer Chemistry, P.O. Box 55, FIN-00014, University of Helsinki, Finland, Tel. +358-9-19150322, Fax +358-9-19150330. E-mail: maria.tahvanainen@helsinki.fi aut NATIONALLICENCE 773 0- Restaurator Walter de Gruyter GmbH & Co. KG 24/1(2003-03), 1-17 0034-5806 24:1<1 2003 24 REST CC0 http://creativecommons.org/publicdomain/zero/1.0 nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-gruyter