Decoupling the effects of mass fraction, protein content, and gelatinization temperature in wheat starch-based paste on Xuan paper degradation

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

npj Materials Degradation Pub Date : 2026-04-04 DOI:10.1038/s40494-026-02483-x

Panpan Liu, Mantang Ge, Xunwei Li, Yuyao Ruan, Yuhu Li, Yu Luo

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Abstract

Wheat starch-based paste is a traditional adhesive used in paper relic conservation. This study systematically investigates the effects of three key parameters (mass fraction, protein content, and gelatinization temperature) in wheat starch-based paste on the degradation behavior of Xuan paper. ATR-FTIR characterized the molecular structure of Xuan paper after separate starch and flour treatment. Through a 23 factorial experimental design, we demonstrate that mass fraction serves as the primary factor controlling paper lightness loss, yellowing, color change increase, and acidification, while protein content predominantly governs the reduction in 400 nm reflectance. Protein conformational changes indicated by fluorescence red shifts and a shift from α-helix to random coil structures were key factors in loss of film flexibility. After 17-day degradation, paste-treated paper showed more severe degradation in optical properties and developed microcracks, contrasting with untreated paper in wettability and crystallinity. The work provides a framework for understanding wheat paste-induced paper degradation.

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解耦小麦淀粉基糊料质量分数、蛋白质含量和糊化温度对宣纸降解的影响

小麦淀粉基浆料是一种传统的造纸文物保护粘合剂。本研究系统地考察了小麦淀粉糊的质量分数、蛋白质含量和糊化温度三个关键参数对宣纸降解行为的影响。ATR-FTIR表征了淀粉和面粉分离处理后宣纸的分子结构。通过23因子实验设计，我们发现质量分数是控制纸张亮度损失、变黄、颜色变化增加和酸化的主要因素，而蛋白质含量主要控制纸张400 nm反射率的降低。荧光红移显示的蛋白质构象变化和α-螺旋结构向随机线圈结构的转变是薄膜柔韧性丧失的关键因素。经过17天的降解，浆糊处理后的纸张在光学性能上的退化更为严重，并且出现了微裂纹，而在润湿性和结晶度上与未处理过的纸张形成了对比。这项工作为理解麦麸引起的纸张降解提供了一个框架。

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

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