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Effect of Ethanolamine Species on Paper Aging by Metals  

Yoon, Byung-Ho (Changgang Institute of Paper Science and Technology, Kangwon National University)
Kim, Yong-Sik (Faculty of Forestry, Department of Wood Science, University of British Columbia)
Choi, Kyoung-Hwa (Changgang Institute of Paper Science and Technology, Kangwon National University)
Publication Information
Journal of Korea Technical Association of The Pulp and Paper Industry / v.40, no.3, 2008 , pp. 36-41 More about this Journal
Abstract
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.
Keywords
Preservation; aging; mass deacidification; metal; ethanolamine;
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