Zhang Dahai, Pan Qianhao, Jia Minghao, Zhang Xiaogang, Wang Yapei
Department of Chemistry, Renmin University of China, Beijing 100872, China.
School of Archaeology and Museology, Peking University, Beijing 100871, China.
Langmuir. 2021 Jul 20;37(28):8445-8454. doi: 10.1021/acs.langmuir.1c00770. Epub 2021 Jul 8.
As the most frequently used archival materials for painting and recording, paper lays the groundwork for the development of prosperous human civilization. However, its susceptibility to three primary factors including external ultraviolet light, increased acidity, and biological pathogens in long-term storage shortens the longevity of paper. Therefore, the protection of paper-based cultural relics is extremely urgent. Inspired by the three adverse factors affecting the protection of cultural relics, we herein propose to combine the ultraviolet absorber 2-hydroxy-4-(octyloxy)benzophenone (UV-531) and alkaline zinc oxide (ZnO) nanoparticles innovatively into the antibacterial agent polyhexamethylene biguanidine hydrochloride (PHMB) to realize the strategy of three birds with one stone for relics protection. This study illustrates that the tensile strength and the folding endurance of different test papers are guaranteed by coating them with the composite reagents, and molds including Mucor, Trichoderma, and are effectually sterilized. In addition, a hand-painted Chinese ink-wash painting with beautiful flowers is chosen as the object for simulating cultural relics protection, and negligible color fading is observed in aging experiments. From the perspective of effectiveness, simplicity, and economy, this strategy sheds light on preservative protection of paper-based relics in long-term storage.
作为绘画和记录中最常用的档案材料，纸张为繁荣的人类文明发展奠定了基础。然而，在长期保存中，它易受包括外部紫外线、酸度增加和生物病原体在内的三个主要因素影响，从而缩短了纸张的寿命。因此，纸质文物的保护迫在眉睫。受影响文物保护的三个不利因素启发，我们在此创新性地将紫外线吸收剂2-羟基-4-（辛氧基）二苯甲酮（UV-531）和碱性氧化锌（ZnO）纳米颗粒结合到抗菌剂聚六亚甲基双胍盐酸盐（PHMB）中，以实现文物保护的一石三鸟策略。本研究表明，用复合试剂涂覆不同的试纸可保证其拉伸强度和耐折度，包括毛霉、木霉等霉菌被有效杀灭。此外，选取一幅绘有美丽花朵的中国手绘水墨画作为模拟文物保护的对象，在老化实验中观察到颜色褪色可忽略不计。从有效性、简便性和经济性的角度来看，该策略为长期保存的纸质文物的防腐保护提供了思路。
