Liu Jiaojiao, Xing Huiping, Zhou Yajun, Chao Xiaolian, Li Yuhu, Hu Daodao
Engineering Research Center of Historical Cultural Heritage Conservation, Ministry of Education, School of Materials Science and Engineering, Shaanxi Normal University, Xi'an 710119, China.
Polymers (Basel). 2022 Jan 5;14(1):207. doi: 10.3390/polym14010207.
Paper acidification causes paper relics to undergo embrittlement and decay, to form dregs, and even to break upon a single touch; therefore, reinforcement and deacidification treatments are essential steps for paper conservation and to retard the deterioration and prolong the life of objects. Polymeric adhesives play an essential role in reinforcement and deacidification treatments, although it is not well studied. In this work, the effect of polymeric adhesives on the conservation process and their protective effects on acidified paper relics were studied. Firstly, three polymeric adhesives, including wheat starch paste, polyvinyl butyral (PVB), and polyvinyl alcohol (PVA), were selected as research objects. Subsequently, their effects on four popular conservation methods were further discussed, including traditional mounting, hot-melt with silk net, alcohol-soluble cotton mesh, and water-soluble cotton mesh. Additionally, as an example, the reversibility and long-term durability of water-soluble adhesive PVA-217 were assessed. Using a computer measured and controlled folding endurance tester, pendulum tensile strength tester, tear tester, burst tester, FT-IR, video optical contact angle tester, and other instruments, the conservation application of water-soluble adhesives in paper relics was evaluated. This study provides a scientific basis and experimental data for the application of polymeric adhesives in the conservation of paper relics.
纸张酸化会导致纸质文物变脆、腐烂，形成渣滓，甚至一触即碎；因此，加固和脱酸处理是纸质文物保护以及延缓其劣化、延长其寿命的关键步骤。聚合物粘合剂在加固和脱酸处理中起着至关重要的作用，尽管对此研究并不充分。在本研究中，对聚合物粘合剂在保护过程中的作用及其对酸化纸质文物的保护效果进行了研究。首先，选取了三种聚合物粘合剂作为研究对象，包括小麦淀粉糊、聚乙烯醇缩丁醛（PVB）和聚乙烯醇（PVA）。随后，进一步探讨了它们对四种常用保护方法的影响，包括传统裱糊、热熔丝网、醇溶性棉布网和水溶性棉布网。此外，以水溶性粘合剂PVA - 217为例，评估了其可逆性和长期耐久性。使用计算机测控耐折度测试仪、摆锤式拉伸强度测试仪、撕裂测试仪、破裂强度测试仪、傅里叶变换红外光谱仪、视频光学接触角测试仪等仪器，对水溶性粘合剂在纸质文物保护中的应用进行了评估。本研究为聚合物粘合剂在纸质文物保护中的应用提供了科学依据和实验数据。
