• Journal of Korea Technical Association of The Pulp and Paper Industry
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• v.46 no.2
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• pp.22-29
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• 2014

Many government agencies have used domestic deacidification equipments to stabilize archives; however, no agency has verified archives' current preservative status. We studied the Nara National Archives' documents that had treated by mass deacidification process from 2001 to 2012, in order to examine the documents' preservative status and how efficient the mass deacidification has been. Approximately 1% of total 112,970 Nara National Archives' documents treated by mass deacidification were randomly selected and evaluated on their current measure of acidity and color change. Regardless of the kinds of document material, a wide range of pH level was found. Especially those documents that were treated by mass deacidification equipment after 2006 showed acidic conditions that were less than pH 6.8 level. Those documents were probably not treated properly by deacidifying chemical because of tightly packing style. The current measures of acidity and color records will be useful as a reference for future evaluations of further decay of the documents. It was the first study to evaluate acidity and color conditions of Nara National Archives' documents treated by mass deacidification equipment. We concluded that when using mass deacidification equipment, archives should not be loaded tightly in order for them to be fully in contact with deacidifying chemical.

• Journal of the Korean Society for Library and Information Science
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• v.25
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• pp.265-294
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• 1993

At the present. one of the very important functions of the information center or library is to provide information service on time and to the right person. But it is impossible if the shape of the material is not complete. So it is important to keep the material of information complete. This study is on deacidification of paper materials for enhancing useful life of information. This study can be summerized as follews; The material needs deacidification is all of machine-made paper except neutral paper, and hand made paper which are below pH 6.5. The best way for the deacidification for the small amount of materals is to use aqueous deacidifiers such as Calcium Carbonate, Magnesuim Carbonate and Borax. For mass deacidification process, Methoxy Magnesuim Methyle Carbonate and Magnesuim Oxide, called

• Journal of Korea Technical Association of The Pulp and Paper Industry
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• v.40 no.3
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• pp.36-41
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• 2008

It is known that ethanolamines play a critical role for deacidification of paper sized by alum-rosin. However, amines also are effective as a chelating agent of metal. The present work was focused on whether amines could scavenge metals and prevent from the aging of paper. Metals such as alum, copper(II) and iron(III) was added to paper, and the paper treated with amines was aged in a thermo-hygrostat for 3-6 days. In the case of paper added to alum, the amines efficiency against paper aging was good in the oder of triethanolamine, diethanolamine and monoethanolamine attributable to the intensity of basicity and steric effect. Even in the case of paper treated with copper(II) chloride, iron(III) chloride, and copper(II) chloride, the significant preservation efficiency was shown by ethanolamine during accelerated aging. This outcome pinpoints the fact that ethanolamine can prevent paper aging not only from acid by neutralizing acid contained in paper but also from metals by producing of complexes with metals. These consequences above convince that ethanolamine makes it possible for mass deacidification for paper which contains acid and metals. Future studies should be conducted concerning whether, in reality, the treatment of its gas mode, in a single or multiple applications, has significant effect on lessening paper aging.

• Journal of Korean Society of Archives and Records Management
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• v.1 no.1
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• pp.177-200
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• 2001

The causes which affects the deterioation of paper arc paper structure, papermaking process, temperature and rative humidity, light and biological agents. Paper made from cllulose fibers by the wood and the nonwood, This paper structure is further hydrolyzed by acidic additive such as the sizing agents during the manufacturing process. These additives leave residual acids in the paper, which break the cellulose clown to simper molecules. The results is weak paper and bas caused most of the damage to book. This study was carried out to investigate the presevation and the deacidification for the permanenece by the book. The deacidification and the chemical agents aims to nutralized the aicd in paper and add alkaline to it as a buffer to withstand future acid attacks. By applying the system to the acid paper with a pH of 4.5 neutralized a pH of 8.5. The expected of alkaline reserved paper extend about 2times and 3times than acidic paper.