Study of the Photo-Oxidation of Mass-Deacidified Papers

Dufour, Javier; Havermans, J.B.G.A.

doi:10.1515/rest.2001.20

Cited by 11 publications

(20 citation statements)

References 7 publications

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“…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%

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%

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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“…In general, the oxidative degradation of paper results from the action of oxidizing agents (especially O 2 and reactive oxygen species (ROS)), radiation, and the catalytic action of transition metal species (TMS). [23]. In the presence of oxygen and UV radiation, deacidified (i.e., slightly alkaline) paper undergoes degradation of β-glycosidic bonds by alkaline hydrolysis and (photo)oxidation converting OH-groups to CO-and COOH-groups, thus contributing to paper yellowing.…”

Section: Oxidation Of Cellulose and Paper In An Alkaline Environmentmentioning

confidence: 99%

“…A comparison of the oxidative and photooxidative degradation of paper deacidified by several methods applied in a mass scale was published Dufour and Havermans in 2001 [ 23 ]. In the presence of oxygen and UV radiation, deacidified (i.e., slightly alkaline) paper undergoes degradation of β-glycosidic bonds by alkaline hydrolysis and (photo)oxidation converting OH-groups to CO- and COOH-groups, thus contributing to paper yellowing.…”

Section: Oxidation Of Cellulose and Paper In An Alkaline Environmementioning

confidence: 99%

“…The stimulus for investigation of photochemical degradation is the fact that most paper-based documents are usually exposed to visible and UV-A spectra during their normal use. Even despite the restrictions in archives, libraries, and museums aimed at protecting papers against light sources, the effects of the photo deterioration of paper should not be fully neglected [ 23 , 35 , 36 , 37 , 38 ]. Recent research showed, for example, that papers after deacidification became more sensitive toward photodegradation [ 38 ].…”

Section: Oxidation Of Cellulose and Paper In An Alkaline Environmementioning

confidence: 99%

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Stability of Alum-Containing Paper under Alkaline Conditions

Jablonský

Šíma

2020

Molecules

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The present contribution evaluates the methods of degradation and stabilization of alum-containing paper with a focus on the alkaline environment achieved by deacidification procedures. In terms of reviewed subjects, the contribution focuses on alum-rosin sized paper, which is still used as a carrier of knowledge and information; however, it also mentions cellulose itself and other brands of paper. The contribution summarizes the results on the homogeneity of the distribution of alum and rosin in the paper mass and on the paper surface. It provides the knowledge gained in the field of alkaline hydrolysis and oxidation with special regard to transition metal species. It shows the values of alkaline reserves achieved in the main mass-deacidification processes. On the basis of the acquired knowledge, the contribution emphasizes the procedures of paper stabilization. Criteria of “increased mechanical permanence and lifetime prolongation” adopted to evaluate and compare the efficacy of individual mass-deacidification processes were applied and corresponding data are introduced. The contribution also draws attention to the existence of open issues in the area of paper degradation and stabilization.

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“…It is admitted by several authors that an acidic pH generally stimulates fungal growth 2,3,4 . This has given rise to the question whether deacidification, 8,9,10 which is an effective method for inhibiting paper degradation 11 during the ageing process, can affect fungal development. Research to date has not made it clear whether the alkalinity or acidity of paper can play a role in the development of mould.…”

Section: Introductionmentioning

confidence: 99%