Aging time improves adhesive performance of handmade starch paste for restoration of ancient Chinese books and its mechanism of action

IF 2.6 1区艺术学 Q2 CHEMISTRY, ANALYTICAL

Heritage Science Pub Date : 2024-08-22 DOI:10.1186/s40494-024-01423-x

Changwei Wang, Yuqi Yao, Yue Zhang, Xiao Yao

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引用次数: 0

Abstract

In the restoration of ancient Chinese books, handmade starch paste serves as a paper adhesive, distinguished from traditional starch paste preparation methods. It involves special processes such as starch washing and aging, relying entirely on the artisanal expertise throughout the entire process. The study recreates the process of making handmade starch paste for the restoration of traditional ancient books and investigates the effects of aging time on the apparent viscosity, rheological properties, and adhesive performance of the paste. The results indicate that during aging, the pH of the starch paste decreases significantly, but it has a minimal impact on its apparent viscosity, rheological properties, and paper softness. However, it notably enhances the adhesive performance, with the optimal results observed after 3 days of aging. This is attributed to the decrease in residual protein content in the starch, as well as the significant improvement in swelling power and solubility of the starch. The results of infrared spectroscopy and XRD testing reveal that there are no significant changes in the molecular and crystalline structures of starch during the aging process. The acidic environment produced by starch fermentation promotes protein hydrolysis, emerging as the primary reason for the improved adhesive performance of the paste.

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老化时间对用于修复中国古籍的手工淀粉浆粘接性能的改善及其作用机理

在中国古籍修复中，手工淀粉浆作为一种纸张粘合剂，有别于传统的淀粉浆制备方法。它涉及淀粉洗涤和老化等特殊工序，整个过程完全依靠工匠的专业知识。本研究再现了用于修复传统古籍的手工淀粉浆的制作过程，并研究了老化时间对浆糊表观粘度、流变特性和粘合性能的影响。结果表明，在老化过程中，淀粉糊的 pH 值会明显下降，但对其表观粘度、流变性能和纸张柔软度的影响很小。不过，pH 值明显提高了粘合剂的性能，老化 3 天后可观察到最佳效果。这归因于淀粉中残留蛋白质含量的减少，以及淀粉膨胀力和溶解性的显著提高。红外光谱和 XRD 测试结果表明，在老化过程中，淀粉的分子结构和结晶结构没有发生明显变化。淀粉发酵产生的酸性环境促进了蛋白质水解，这是糊状物粘合性能提高的主要原因。

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来源期刊

Heritage Science Arts and Humanities-Conservation

CiteScore

4.00

自引率

20.00%

发文量

183

审稿时长

19 weeks

期刊介绍： Heritage Science is an open access journal publishing original peer-reviewed research covering: Understanding of the manufacturing processes, provenances, and environmental contexts of material types, objects, and buildings, of cultural significance including their historical significance. Understanding and prediction of physico-chemical and biological degradation processes of cultural artefacts, including climate change, and predictive heritage studies. Development and application of analytical and imaging methods or equipments for non-invasive, non-destructive or portable analysis of artwork and objects of cultural significance to identify component materials, degradation products and deterioration markers. Development and application of invasive and destructive methods for understanding the provenance of objects of cultural significance. Development and critical assessment of treatment materials and methods for artwork and objects of cultural significance. Development and application of statistical methods and algorithms for data analysis to further understanding of culturally significant objects. Publication of reference and corpus datasets as supplementary information to the statistical and analytical studies above. Description of novel technologies that can assist in the understanding of cultural heritage.