Synergistic ATRP-IL approach for improving the mechanical properties of fragile palm leaf manuscripts

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

npj Materials Degradation Pub Date : 2025-10-11 DOI:10.1038/s40494-025-02075-1

Yihang Zhou, Kai Wang, Liuyang Han

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引用次数: 0

Abstract

This study proposes a novel conservation strategy combining atom transfer radical polymerization (ATRP) and ionic liquid (IL) treatments to modulate the mechanical properties of fragile palm leaf manuscripts. ATRP was employed to graft methacrylate polymers (PAAEM, PHMA, and their copolymers) onto lignin-rich regions of degraded samples, forming a reinforcement network within the cell walls. Concurrently, 1-butyl-3-methylimidazolium chloride ([Bmim]Cl) was applied to enhance flexibility. ATRP consolidation significantly improved bending strength up to 37.9 MPa for highly degraded samples by thickening fiber cell walls. Ionic liquid treatment increased deflection to levels comparable to sound manuscripts. The synergistic application of ATRP (PAAEM) and IL achieved a toughness of 0.56 J/m³, 3.3 times as high as untreated samples. FTIR and histochemical staining demonstrated successful polymer grafting and reduced exposure of degraded polysaccharides. The study bridges advanced polymer chemistry and heritage conservation, offering a new pathway for preserving fragile cultural artifacts.

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提高易碎棕榈叶手稿力学性能的协同ATRP-IL方法

本研究提出了一种结合原子转移自由基聚合（ATRP）和离子液体（IL）处理的新型保护策略来调节易碎棕榈叶手稿的力学性能。ATRP用于将甲基丙烯酸酯聚合物（PAAEM， PHMA及其共聚物）接枝到降解样品的富含木质素的区域，在细胞壁内形成强化网络。同时，1-丁基-3-甲基咪唑氯（[Bmim]Cl）用于增强柔韧性。ATRP固结通过增厚纤维细胞壁，显著提高了高降解样品的抗弯强度，达到37.9 MPa。离子液体处理增加了偏转到与声音手稿相当的水平。ATRP （PAAEM）和IL的协同应用获得了0.56 J/m³的韧性，是未处理样品的3.3倍。FTIR和组织化学染色显示成功的聚合物接枝和减少暴露的降解多糖。该研究将先进的聚合物化学与文物保护结合起来，为保护脆弱的文物提供了新的途径。

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