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Revealing the Mechanism of Ink Flaking from Surfaces of Palm Leaves (Corypha umbraculifera)
Langmuir ( IF 3.7 ) Pub Date : 2024-03-13 , DOI: 10.1021/acs.langmuir.3c03946 Xiaodong Lian 1, 2 , Chen Yu 1 , Wenwen Han 2 , Bing Li 1 , Meifang Zhang 1 , Yapei Wang 2 , Liusan Li 3
Langmuir ( IF 3.7 ) Pub Date : 2024-03-13 , DOI: 10.1021/acs.langmuir.3c03946 Xiaodong Lian 1, 2 , Chen Yu 1 , Wenwen Han 2 , Bing Li 1 , Meifang Zhang 1 , Yapei Wang 2 , Liusan Li 3
Affiliation
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Palm leaves are the primary literary support in South and Southeast Asia before the widespread use of paper. However, palm leaf manuscripts face the threat of information loss due to the persistent issue of ink flaking during long-term preservation. Herein, we focus on studying the botanical structure, surface properties, and surface composition of palm leaves to gain an insightful understanding of the mechanism of ink flaking. According to the surface energy analysis, the surface of palm leaves is dominated by the dispersive component due to the presence of hydrophobic substances, resulting in the weak interaction between the handwriting and palm leaves. Moreover, the accumulation of silicon on palm leaves creates a “cuticle-silicon double layer”, leading to a dense structure that hinders deep ink absorption. These two main reasons are considered to cause the ink flaking easily, which is further proven by the ink flaking test with the simulated palm leaf manuscripts. To the best of our knowledge, this is the first in-depth technical study on the adhesion performance of handwriting on plant leaves. This work also provides a theoretical basis for the study of the deterioration, adhesive repair, enhancement of flexibility, handwriting reinforcement, and beyond, which contributes to the conservation of precious palm leaf manuscripts.
中文翻译：
揭示棕榈叶（Corypha umbraculifera）表面墨水剥落的机制
在纸张广泛使用之前，棕榈叶是南亚和东南亚的主要文学载体。然而，由于长期保存过程中墨水剥落的问题持续存在，棕榈叶手稿面临着信息丢失的威胁。在此，我们重点研究棕榈叶的植物结构、表面特性和表面成分，以深入了解墨水剥落的机制。根据表面能分析，由于疏水性物质的存在，棕榈叶表面以分散成分为主，导致笔迹与棕榈叶之间的相互作用较弱。此外，硅在棕榈叶上的积累形成了“角质层-硅双层”，导致了致密的结构，阻碍了深层墨水的吸收。这两个主要原因被认为是导致墨水容易剥落的原因，并通过模拟棕榈叶原稿的墨水剥落测试进一步证明了这一点。据我们所知，这是首次对植物叶子上的笔迹粘附性能进行深入的技术研究。这项工作还为劣化、粘合修复、增强柔韧性、笔迹加固等研究提供了理论依据，为珍贵的棕榈叶手稿的保护做出了贡献。
更新日期：2024-03-13
中文翻译：
揭示棕榈叶（Corypha umbraculifera）表面墨水剥落的机制
在纸张广泛使用之前，棕榈叶是南亚和东南亚的主要文学载体。然而，由于长期保存过程中墨水剥落的问题持续存在，棕榈叶手稿面临着信息丢失的威胁。在此，我们重点研究棕榈叶的植物结构、表面特性和表面成分，以深入了解墨水剥落的机制。根据表面能分析，由于疏水性物质的存在，棕榈叶表面以分散成分为主，导致笔迹与棕榈叶之间的相互作用较弱。此外，硅在棕榈叶上的积累形成了“角质层-硅双层”，导致了致密的结构，阻碍了深层墨水的吸收。这两个主要原因被认为是导致墨水容易剥落的原因，并通过模拟棕榈叶原稿的墨水剥落测试进一步证明了这一点。据我们所知，这是首次对植物叶子上的笔迹粘附性能进行深入的技术研究。这项工作还为劣化、粘合修复、增强柔韧性、笔迹加固等研究提供了理论依据，为珍贵的棕榈叶手稿的保护做出了贡献。
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