TERMIUM Plus®

The Government of Canada’s terminology and linguistic data bank.

DEACIDIFICATION [3 records]

Filter results by subject field Alphabetical list of terms

Filter results by subject field

Alphabetical list of terms

Record 1 2016-07-18

English

Subject field(s)
  • Chemistry
  • Conservation and Repair of Books
  • Restoration of Works of Art (Museums and Heritage)
DEF

[A] process that impregnates paper with an alkaline reserve to neutralize the active acid in the paper substrate and act as a buffer to neutralize acids produced in the future.

CONT

The development of a viable mass deacidification process has long been considered the answer to the problems of conservation in the library field. Acid, inherent in the untreated wood pulp, introduced into the paper in the manufacturing process, or caused from contact with polluted air, breaks the links in the cellulose polymer chains causing the fibers to break down; the paper becomes discolored and brittle, losing both permanence and durability very quickly. ... Deacidification does arrest the acid attack and, if adequate buffers are left in the paper, prevents it from recurring, but does not restore embrittled and discolored books to their original state.

OBS

Deacidification lengthens the life expectancy of paper several times its ordinary life.

Key term(s)
  • de-acidification

French

Domaine(s)
  • Chimie
  • Entretien des livres
  • Restauration d'œuvres d'art (Muséologie et Patrimoine)
DEF

[Processus] complexe qui permet, grâce à un agent alcalin (gazeux ou liquide), de neutraliser les acides présents dans le papier et de fournir une réserve alcaline dans le but de prolonger la durée de vie des documents.

CONT

[Toute] restauration devrait permettre d'obtenir une stabilisation mécanique et chimique ainsi qu'une meilleure lisibilité du document, et permettre d'en faciliter la consultation et la mise en exposition. Quelques-uns des traitements, les plus courants, sont le dépoussiérage, le nettoyage à sec, le marouflage (action qui consiste à coller du papier ou de la toile sur un support pour le consolider), le traitement aqueux, la désacidification et la pose de renforts.

Spanish

Save record 1

Record 2 2008-02-13

English

Subject field(s)
  • Chemistry
  • Fatty Substances (Food)

French

Domaine(s)
  • Chimie
  • Corps gras (Ind. de l'aliment.)
CONT

La neutralisation a pour objet de traiter l'huile démucilaginée par une solution de soude en vue d'en retirer les acides gras libres.

Spanish

Campo(s) temático(s)
  • Química
  • Substancias grasas (Industria alimentaria)
Save record 2

Record 3 2000-05-18

English

Subject field(s)
  • Textiles: Preparation and Processing
OBS

deacidify: to remove acid from: reduce the acidity (as by neutralization).

French

Domaine(s)
  • Apprêt et traitements divers (Textiles)
DEF

Élimination plus ou moins complète, généralement par rinçage, de l'acide contenu dans un textile. Ce terme n'est pas toujours synonyme de neutralisation. [Définition normalisée par l'AFNOR et reproduite avec son autorisation.]

OBS

désacidage : terme normalisé par l'AFNOR.

Spanish

Save record 3

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TERMIUM Plus®, the Government of Canada's terminology and linguistic data bank
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