@article{oai:tobunken.repo.nii.ac.jp:00005756,
 author = {貴田, 啓子 and 堀, まなみ and 大場, 詩野子 and 古田嶋, 智子 and 池田, 和彦 and 犬塚, 将英 and 早川, 典子 and Keiko, KIDA and Manami, HORI and Shinoko, OBA and Tomoko, KOTAJIMA and Kazuhiko, IKEDA and Masahide, INUZUKA and Noriko, HAYAKAWA},
 issue = {57},
 journal = {保存科学, Science for conservation},
 month = {Mar},
 note = {In paper artworks conservation, wet cleaning treatments are usually performed to remove substances other than the original one and to release the adhesive substances for reattach treatment. For this it is important and technical to adjust and control the degree of wetness of the paper. Especially in the case of treatment for damaged paper, the risks of historical artifact being damaged by water and the historically important information being lost increase. The rigid hydrogels of gellan gum, which is a natural polysachalide, can be effectively used to minimize such impact of water on paper. The present study evaluates the analytical study of residues and impact through accelerated ageing on paper samples after wet treatment by means of gellan gum application.
The residues of wet treatment by gel of gellan gum, which are potassium, calcium, and acetic acid ions, could be detected from Whatman paper. The pH of both Whatman paper and kozo paper treated with gel tends to be a little higher than that of paper with direct wet treatment. However, when the gel is washed with ultrapure water before gel wet treatment, the residue derived from gellan gum gel is dramatically reduced or not detected. Moreover, pH of the paper treated with washed gel shows almost the same value as paper treated with direct wet treatment as control. It is revealed that washing gel of gellan gum before using it for wet treatment of paper is effective because it does not leave residue derived from the gel. Some kinds of paper samples treated with non-washed gel are influenced in the value of pH, discoloration, and physical strength after hygrothermal ageing. However, when the paper samples are first treated with washed gel their physical characteristics change in the same way as the paper treated with direct water as a control. That is, washing gel is effective in avoiding the negative influence on paper after gel wet treatment.},
 pages = {123--131},
 title = {〔報告〕ジェランガムゲル処置による紙資料への影響},
 year = {2018}
}