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2022 Vol.54, Issue 6 Preview Page
A Study on Deacidification Treatment of the Deteriorated Glue-Treated Hanji Using Magnesium Oxide

산화마그네슘을 이용한 열화된 아교포수 한지의 탈산처리 연구

Won San Park1
,
Hyoung-Jin Kim2†
박원산 1
,
김형진 2†
1Department of Conservation of Cultural Heritage, Kookmin University
2Department of Conservation of Cultural Heritage, Kookmin University
1국민대학교 문화재보존학과, 학생
2국민대학교 문화재보존학과, 교수
†Corresponding author: E-Mail: hyjikim@kookmin.ac.kr (Address: Department of Conservation of Cultural Heritage, Kookmin University, Seoul, 02707, Republic of Korea)
30 December 2022. pp. 163-171
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Abstract

Hanji, a traditional Korean paper, has a porous structure and hydrophilicity due to cellulose’s hydroxyl group (-OH). A glue catcher is commonly used to prevent spreading. Glue-mixed water used for the glue catcher is prepared by mixing natural animal adhesive glue and alum (KAl(SO4)2·12H2O). The alum mixed with the glue-stirred water acts as a bridge connecting the glue and prevents the ink and pigment from spreading so that the color adheres well to the Hanji paper, the base material. However, sulfate ions (SO42-) contained in alum combine with water to form sulfuric acid, which causes acidification. It is deacidized by penetrating alkaline substances such as magnesium oxide (MgO) to prevent such acidification. After applying the glue to the Hanji paper, the deterioration proceeded. The deacidification treatment with magnesium oxide after the deterioration was carried out to evaluate the behaviors of physical, mechanical, and pH neutralization reaction of the Hanji paper, and after deacidification, the general strength properties were increased in mechanical properties. In the optical properties, the L* value increased as the deacidification treatment proceeded. It was confirmed that the pH value significantly reduced the oxidation of Korean paper in the glia count and neutralized the deacidification treatment.

Keywords
Deacidification treatment
glue application
magnesium oxide
deterioration
References

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Information
  • Publisher :Korea Technical Association of The Pulp and Paper Industry
  • Publisher(Ko) :한국펄프종이공학회
  • Journal Title :Journal of Korea TAPPI
  • Journal Title(Ko) :펄프종이기술
  • Volume : 54
  • No :6
  • Pages :163-171
  • Received Date : 2022-12-05
  • Revised Date : 2022-12-26
  • Accepted Date : 2022-12-27
  • DOI :https://doi.org/10.7584/JKTAPPI.2022.12.54.6.163
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