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http://dx.doi.org/10.7584/ktappi.2014.46.6.056

Comparisons of Effectiveness of the Supercritical Fluid Extraction Dewaxing on the Beeswax-Treated Paper with Different Aging Degrees  

Jeong, Hye Young (Research Division of Restoration Technology, National Research Institute of Cultural Heritage)
Kang, Young Suk (Research Division of Restoration Technology, National Research Institute of Cultural Heritage)
Go, In Hee (Research Division of Restoration Technology, National Research Institute of Cultural Heritage)
Yang, Eun Jeong (Research Division of Restoration Technology, National Research Institute of Cultural Heritage)
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.46, no.6, 2014 , pp. 56-62 More about this Journal
Abstract
This study aims to investigate the applicability of supercritical fluid extraction as a dewaxing technique to restore the beeswax-treated volume of the Annals of the Joseon Dynasty in various deterioration and damage conditions. Thus, this study analyzed the dewaxing efficiency and changes in physical and morphological properties before and after dewaxing, by applying the optimal supercritical fluid extraction dewaxing condition ($70^{\circ}C$, 40 MPa, $CO_2$, Co-solvent 20% DCM, 2 hour) to 3 kinds of beeswax-treated paper with different deterioration rates (dry artificial aging of 10, 20 and 30 days at $120^{\circ}C$). After dry artificial aging at $120^{\circ}C$ for 30 days, the average molecular weight of the beeswax-treated specimen was $1.856{\times}10^5g/mol$, showing deterioration about 80% of the beeswax-treated paper before dewaxing. It was a similar level to the molecular weight of the bees-waxed volume of the Annals of the Joseon Dynasty that has a higher degree of damage. As a result of analyzing the dewaxing efficiency through FT-IR analysis, this study discovered that it was possible to effectively dewax beeswax-treated paper in the range of deterioration 20 to 80% with this supercritical fluid extraction dewaxing technique applied. As a result of analyzing changes in the physical and morphological properties before and after dewaxing, the viscosity tended to decrease to a slight degree, and since no morphological deformation or damage of stencil fibers was found, it was concluded possible to conduct stable dewaxing through this supercritical fluid extraction technique.
Keywords
Supercritical fluid extraction; dewaxing technique; the Annals of Joseon Dynasty; beeswax-treated volume;
Citations & Related Records
Times Cited By KSCI : 9  (Citation Analysis)
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1 Research on Restoration Technology for Beeswax-treated Annals of Joseon Dynasty 1, National Research Institute of Cultural Heritage, pp. 76-77 (2013).
2 Jeong, S. Y., Lee, H. Y., Chung, Y. J., Hong, J. K., and Eom, D. S., Investigation of conservation state on the waxed volumes of Annals of the Joseon Dynasty, Conservation Studies 25:119-132 (2004).
3 Song, K. J., Shin, B. J., Park, C. S., and Lee, I. S., Preliminary investigation to preserve the Annals of the Joseon Dynasty (1), Seoul National University Press, Seoul, pp. 195-235 (2005).
4 Choi, K. H., Park, J. H., Jeong, H. Y., and Seo, J. H., Effect of humid cycling accelerated aging on deterioration of duplicated beeswax-treated volume, Journal of Korea TAPPI 42(4):15-24 (2010).   과학기술학회마을
5 Choi, K. H., Kang, Y. S., Cho, J. H., and Jeong, H. Y., Study of aging factors and mechanism of beeswax-treated volume for the Annals of the Joseon Dynasty, Paper Technology 25:39-47 (2011).
6 Yang, E. J., Choi, K. H., Kang, Y. S., Cho, J. H., and Jeong, H. Y., The effect of air quality and humidity on aged characteristics of beeswax-treated paper during artificial aging, Conservation Studies 33:45-55 (2012).
7 Choi, K. H., Cho, J. H., Kang, Y. S., Yang, E. J., and Jeong, H. Y., Studies on the aging characteristics in different parts of beeswax-treated duplicates during humidified artificial aging, Journal of Korea TAPPI 44(5):72-79 (2012).   과학기술학회마을   DOI   ScienceOn
8 Kang, Y. S., Choi, K. H., Cho, J. H., Yang, E. J., and Jeong, H. Y., Characteristics of VOCs emitted from Hanji and waxed volume according to artificial heat treatment, Proceedings of the 36th Conference of the Korean Society of Conservation Science for Cultural Heritage, pp. 5-8 (2011).
9 Kang, Y. S. and Yang, E. J., Characteristics of beeswax-treated Hanji aged by closed and ventilated chamber, Journal of Korea TAPPI 44(6):9-14 (2012).   과학기술학회마을   DOI   ScienceOn
10 Kwang, K. H., Lee, K. J., and Kim, H. J., Evaluation of the beeswax applying and dewaxing technique of Hanji, and their ageing behaviors, Journal of Korea TAPPI 42(3):58-66 (2010).   과학기술학회마을
11 Kwang, K. H. and Kim, H. J., Studies on the reinforcement treatment of aged Hanji using cellulose derivative solutions, Journal of Korea TAPPI 43(2): 40-48 (2011).   과학기술학회마을
12 Kim, K. J., Lee, M. H., and Eom, T. J., Strengthening treatment of aged Hanji with solvent soluble polymers, Journal of Korea TAPPI 44(1):1-9 (2012).   과학기술학회마을   DOI
13 Cho, B. U., Choi, D. C., and Jo, B. M., Effect of Dewaxing ratio of beeswax-treated Hanji by heat and pressure method on aging behavior of dewaxed Hanji, Journal of Korea TAPPI 44(3):15-21 (2012).   과학기술학회마을   DOI   ScienceOn
14 Choi, D. C., Choi, E. Y., Jo, B. M., and Cho, B. U., Optimal organic solvent extraction method for dewaxing of beeswax-treated Hanji, Journal of Korea TAPPI 44(6):50-57 (2012).   과학기술학회마을   DOI   ScienceOn
15 Jeong, H. Y., Choi, K. H., Lee, K. S., and Jo, B. M., Studies on conservation of the beeswax-treated Annals of Joseon Dynasty, Journal of Korea TAPPI 44(6):70-78 (2012).   과학기술학회마을   DOI   ScienceOn
16 The study of restoration technique of beeswax-treated volume of the Annals of the Joseon Dynasty, Research report, National Research Institute of Cultural Heritage, pp. 138-146 (2006).
17 Jo, B. M., Dewaxing technique for restoration of beeswax treated volume, 2013 Reviving the Annals of Joseon Dynasty Symposium Proceedings, National Research Institue of Cultural Heritage, Seoul, pp. 97-124 (2013).
18 Eom, T. J., Enhance the strength for beeswax treated volume of the Annals of Joseon Dynasty, 2013 Reviving the Annals of Joseon Dynasty Symposium Proceedings, National Research Institue of Cultural Heritage, Seoul, pp. 129-148 (2013).