2023 Fiscal Year Final Research Report

Development of High-Performance Kozo Fibres as a Material for Reinforcing Paper Cultural Properties

Research Project

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Project/Area Number	21H00617
Research Category	Grant-in-Aid for Scientific Research (B)
Allocation Type	Single-year Grants
Section	一般
Review Section	Basic Section 03060:Cultural assets study-related
Research Institution	Independent Administrative Institution National Institutes for Cultural Heritage Tokyo National Research Institute for Cultural Properties
Principal Investigator	Inaba Masamitsu 独立行政法人国立文化財機構東京文化財研究所, 保存科学研究センター, 客員研究員 (50135183)
Co-Investigator(Kenkyū-buntansha)	半田昌規広島市立大学, 芸術学部, 研究員 (20538764) 貴田啓子東京藝術大学, 大学院美術研究科, 准教授 (20634918) 藤本真人愛媛県産業技術研究所(紙産業技術センター), 技術支援室, 研究員 (20827521) 西田典由独立行政法人国立文化財機構東京文化財研究所, 保存科学研究センター, アソシエイトフェロー (80502898)
Project Period (FY)	2021-04-01 – 2024-03-31
Keywords	修復材料 / 紙質文化財 / 漉嵌め / ナノセルロース
Outline of Final Research Achievements	Highly externally fibrillated kozo fibre is a high-performance fibre developed for the leaf casting method used to repair insect-eaten documents. As a new high-performance material, it is expected to improve paper conservation by increasing adhesion to the original paper. This is because it does not require the use of materials that may be damaged by insects and fungi, such as wheat flour starch paste, to improve adhesion, and it also makes it possible to reduce the number of work steps. We confirmed that grinding the grindstones of a stone mill (Supermasscolloider) is important when producing externally fibrillated kozo fibre, and established a preparation method. We also confirmed its usefulness as a conservation material.
Free Research Field	保存科学　製紙科学
Academic Significance and Societal Importance of the Research Achievements	虫食い文書の修復に用いられる漉嵌め法（leaf casting）用に開発した高機能化繊維である高度外部フィブリル化楮繊維は、本紙との接着性が高めるなど、新規な高機能材料として紙本修理の改善が期待される。今回、外部フィブリル化楮繊維製造方法を確立したので、紙本修復家が必要に応じて修復現場において、その製造を行えることとなった。