Aging effects of relative humidity on palm leaf manuscripts and optimal humidity conditions for preservation

IF 7.5 2区材料科学 Q1 MATERIALS SCIENCE, MULTIDISCIPLINARY

npj Materials Degradation Pub Date : 2025-05-27 DOI:10.1038/s40494-025-01794-9

Wenjie Zhang, Shan Wang, Liuyang Han, Hong Guo

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引用次数: 2

Abstract

Palm Leaf Manuscripts are valuable cultural assets, and understanding the impact of environmental factors on their properties is essential for effective conservation. This study simulated aging to assess the effects of relative humidity (RH) on the manuscripts using various techniques, including SEM, DVS, TMA, FT-IR, and XRD. The results show that exposure to extreme dry or humid conditions negatively affects the manuscripts. In dry conditions, they experience bending, cracking, reduced mechanical strength, lower hygroscopicity, and chemical degradation. In humid conditions, fungal growth compromises the manuscripts’ structure. These changes affect color, gloss, hygroscopic behavior, cellulose crystallinity, and thermal stability, weakening mechanical properties. Manuscripts stored at 50% RH showed no significant damage, suggesting that this level is optimal for their preservation. This study provides insights into the degradation mechanisms of Palm Leaf Manuscripts under different humidity conditions and offers recommendations for their preservation.

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相对湿度对棕榈叶手稿的老化影响及最佳保存湿度条件

棕榈叶手稿是珍贵的文化遗产，了解环境因素对其特性的影响对有效保护至关重要。本研究采用SEM、DVS、TMA、FT-IR和XRD等技术模拟老化，评估相对湿度（RH）对手稿的影响。结果表明，暴露在极端干燥或潮湿的条件下会对手稿产生负面影响。在干燥条件下，它们会经历弯曲、开裂、机械强度降低、吸湿性降低和化学降解。在潮湿的条件下，真菌的生长破坏了手稿的结构。这些变化影响颜色、光泽、吸湿性、纤维素结晶度和热稳定性，削弱机械性能。在50%相对湿度下保存的手稿没有明显的损坏，这表明这个水平是保存它们的最佳水平。本研究揭示了棕榈叶手稿在不同湿度条件下的降解机制，并为其保存提供建议。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

npj Materials Degradation MATERIALS SCIENCE, MULTIDISCIPLINARY-

CiteScore

7.80

自引率

7.80%

发文量

审稿时长

6 weeks

期刊介绍： npj Materials Degradation considers basic and applied research that explores all aspects of the degradation of metallic and non-metallic materials. The journal broadly defines ‘materials degradation’ as a reduction in the ability of a material to perform its task in-service as a result of environmental exposure. The journal covers a broad range of topics including but not limited to: -Degradation of metals, glasses, minerals, polymers, ceramics, cements and composites in natural and engineered environments, as a result of various stimuli -Computational and experimental studies of degradation mechanisms and kinetics -Characterization of degradation by traditional and emerging techniques -New approaches and technologies for enhancing resistance to degradation -Inspection and monitoring techniques for materials in-service, such as sensing technologies