Mass Deacidification of Paper and Books. I: Study of the Limitations of the Gas Phase Processes

Cheradame, Hervé; Ipert, Stéphane; Rousset, Eliane

doi:10.1515/rest.2003.227

Cited by 20 publications

(25 citation statements)

References 9 publications

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“…Both agents have a relative strong surface tension, which raises concerns about possible solubilization of inks. An inherent drawback of any treatment that relies completely upon treatment with a volatile organic alkali such as ammonia or morpholine is that essentially no alkaline reserve is left behind in the paper (Cheradame et al 2003).…”

Section: Gas-phase Treatmentsmentioning

confidence: 99%

“…A gaseous di-ethyl zinc deacidification system was implemented during the period from 1982 to 1993 for deacidification of books and papers held by the Library of Congress (Sparks 1987;Dufour and Havermans 2001;Cheradame et al 2003). As in the metal alkoxide systems just described, the DEZ system entails interaction of the reagent with moisture in the paper to become transformed to Zn(OH)2 or the corresponding oxide form (MacInnes and Barron 1992).…”

Section: Gas-phase Treatmentsmentioning

confidence: 99%

See 1 more Smart Citation

Deacidification of Acidic Books and Paper by Means of Non-aqueous Dispersions of Alkaline Particles: A Review Focusing on Completeness of the Reaction

Hubbe¹,

Smith²,

Zou³

et al. 2017

BioResources

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Section: Gas-phase Treatmentsmentioning

confidence: 99%

Section: Gas-phase Treatmentsmentioning

confidence: 99%

Deacidification of Acidic Books and Paper by Means of Non-aqueous Dispersions of Alkaline Particles: A Review Focusing on Completeness of the Reaction

Hubbe¹,

Smith²,

Zou³

et al. 2017

BioResources

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“…Der große Vorteil einer Begasung liegt auf der Hand: das Papier kommt nicht mit einem Lösungsmittel in Kontakt, kann nicht aufquellen und die Tinte, Stempelfarben oder Schreibmaschinenfarbe können nicht auslaufen [17].…”

Section: Entsäuerung Mit Gasenunclassified

Chemie kontra Papierzerfall. Papierkonservierung

Roth

2006

Chemie in nserer Zeit

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Papier ist geduldig, aber vergänglich. In den wissenschaftlichen Bibliotheken Deutschlands sind 200 Millionen Bücher gefährdet. Ein großer Teil davon kann heute schon nicht mehr normal benutzt werden. Um das Archivgut, d.h. unsere ganze amtliche Geschichte, steht es genauso schlecht: allein im Bundesarchiv warten 300 laufende Kilometer (!) Unterlagen auf eine Konservierung. Verfahren zur Konservierung sind in den letzten Jahren entwickelt worden, kommen aber für viele Akten bereits zu spät. Ein Blick in die Chemie des Zerfalls und der Konservierung von altem Papier.

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“…Acidcatalyzed hydrolysis of cellulose, acting primarily by the breakage of cellulose chains by random scission of the hemiacetal links, is seen as the main cause of archival paper deterioration (Baranski et al 2005). Therefore, deacidification is an important step in paper conservation, which has been demonstrated to greatly reduce the degradation rate (Cheradame et al 2003). However, deacidification cannot restore the strength lost because cellulose chain deterioration is irreversible.…”

Section: Introductionmentioning

confidence: 99%

Chitosan Derivatives as Bio-based Materials for Paper Heritage Conservation

Ciolacu¹,

Nicu²,

Balan³

et al. 2016

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Three water-soluble chitosan derivatives (ChDs)-carboxymethyl-chitosan (CCh), alkyl-chitosan (ACh), and quaternary-chitosan (QCh)-were evaluated as new materials for paper conservation. Several series of samples were prepared by coating different paper types with ChDs or methylcellulose (MC). The ChDs' effectiveness were analyzed by their effects on the strength (tensile energy absorption (TEA), double folds) and water barriers (Cobb60, contact angle (CA)). The coatings on laboratory paper showed strength improvements for the CCh/QCh coatings that were consistent with an increase in the coating weight (CW). The ACh had little effect on the strength, but developed an effective barrier to water. The coatings on printing paper were performed at a constant CW by applying two layers of the same ChD or MC, and by combining CCh or QCh in the first layer with ACh in the second layer. Homogenous coatings based on the CCh or QCh resulted in high strength improvements, comparable to MC, but only ACh coatings developed an effective barrier to water. Combinations of the CCh or QCh with ACh provided the best relationship between the strength and barrier properties and proved their effectiveness as strengthening/protective materials in the treatment of natural aged paper.

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Mass Deacidification of Paper and Books. I: Study of the Limitations of the Gas Phase Processes

Cited by 20 publications

References 9 publications

Deacidification of Acidic Books and Paper by Means of Non-aqueous Dispersions of Alkaline Particles: A Review Focusing on Completeness of the Reaction

Deacidification of Acidic Books and Paper by Means of Non-aqueous Dispersions of Alkaline Particles: A Review Focusing on Completeness of the Reaction

Chemie kontra Papierzerfall. Papierkonservierung

Chitosan Derivatives as Bio-based Materials for Paper Heritage Conservation

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