Freeze-drying of Water-damaged Paper Material
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| 024 | 7 | 0 | |a 10.1515/REST.2004.119 |2 doi |
| 035 | |a (NATIONALLICENCE)gruyter-10.1515/REST.2004.119 | ||
| 245 | 0 | 0 | |a Freeze-drying of Water-damaged Paper Material |h [Elektronische Daten] |c [Antonio Capolongo, Antonello A. Barresi] |
| 246 | 1 | |a Cryodessiccation d'objets en papier endommagés par l'eau | |
| 520 | 3 | |a The final goal of this work is to study the application of the freeze-drying process to water-damaged archival and library materials. Soaked samples, i.e. reams of modern blank paper (80 g/sheet) consisting of sheets 42 × 59 mm, simulating water-damaged paper material, were prepared and subjected to two different procedures, i.e. pre-freezing and evaporative-freezing respectively. The temperature was monitored in different positions of the sample by means of wire-thermocouples; pressure was monitored by a Pirani gauge; the loss of water at different times of the process was measured by weight control. The qualitative result of freeze-drying was evaluated visually and tactically and found to be acceptable. The average residual moisture content was lower than the initial one (1.0 ± 0.5 %) indicating an over-drying. Since it was verified that primary and secondary drying overlapped, a further reduction of process duration was not possible. Re-conditioning of rigid and brittle dried documents is recommended, in order to avoid mechanical damage. | |
| 540 | |a © 2004 K. G. Saur Verlag GmbH, Ortlerstr. 8, D-81373 München | ||
| 700 | 1 | |a Capolongo |D Antonio |u Dipartimento di Scienza dei Materiali ed Ingegneria Chimica, Politecnico di Torino, corso Duca degli Abruzzi 24, 10129 Torino, Italy, Phone: +39-011-5644658; Fax: +39-011-5644699; E-mail: antonello.barresi@polito.it |4 aut | |
| 700 | 1 | |a Barresi |D Antonello A. |u Dipartimento di Scienza dei Materiali ed Ingegneria Chimica, Politecnico di Torino, corso Duca degli Abruzzi 24, 10129 Torino, Italy, Phone: +39-011-5644658; Fax: +39-011-5644699; E-mail: antonello.barresi@polito.it |4 aut | |
| 773 | 0 | |t Restaurator |d Walter de Gruyter GmbH & Co. KG |g 25/2(2004-06), 119-128 |x 0034-5806 |q 25:2<119 |1 2004 |2 25 |o REST | |
| 856 | 4 | 0 | |u https://doi.org/10.1515/REST.2004.119 |q text/html |z Onlinezugriff via DOI |
| 908 | |D 1 |a research article |2 jats | ||
| 950 | |B NATIONALLICENCE |P 856 |E 40 |u https://doi.org/10.1515/REST.2004.119 |q text/html |z Onlinezugriff via DOI | ||
| 950 | |B NATIONALLICENCE |P 700 |E 1- |a Capolongo |D Antonio |u Dipartimento di Scienza dei Materiali ed Ingegneria Chimica, Politecnico di Torino, corso Duca degli Abruzzi 24, 10129 Torino, Italy, Phone: +39-011-5644658; Fax: +39-011-5644699; E-mail: antonello.barresi@polito.it |4 aut | ||
| 950 | |B NATIONALLICENCE |P 700 |E 1- |a Barresi |D Antonello A. |u Dipartimento di Scienza dei Materiali ed Ingegneria Chimica, Politecnico di Torino, corso Duca degli Abruzzi 24, 10129 Torino, Italy, Phone: +39-011-5644658; Fax: +39-011-5644699; E-mail: antonello.barresi@polito.it |4 aut | ||
| 950 | |B NATIONALLICENCE |P 773 |E 0- |t Restaurator |d Walter de Gruyter GmbH & Co. KG |g 25/2(2004-06), 119-128 |x 0034-5806 |q 25:2<119 |1 2004 |2 25 |o REST | ||
| 900 | 7 | |b CC0 |u http://creativecommons.org/publicdomain/zero/1.0 |2 nationallicence | |
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| 949 | |B NATIONALLICENCE |F NATIONALLICENCE |b NL-gruyter | ||