在老化过程中研究传统手工制作的竹纸的结构和特性
Zirui Zhu1,2, Kai Zhang1, Yu Xue1
1State Key Laboratory of Biobased Material and Green Papermaking, Qilu University of Technology, Shandong Academy of Sciences, Jinan 250353, China.
Molecules (Basel, Switzerland)
|December 17, 2024
概括
这项研究揭示了手工纸在干热老化下如何降解. 机械性能随着纤维素的分解而下降,但键和角化提供了一些稳定性,素和半纤维素可能形成第二个稳定阶段.
科学领域:
- 材料科学 材料科学 材料科学
- 化学 化学 化学
- 保护科学 保护科学
背景情况:
- 手工制作的纸张是文化遗产的重要载体.
- 了解纸张退化对于保存历史文档至关重要.
研究的目的:
- 研究手工制造纸在加速老化下结构性质和降解机制之间的关系.
- 分析机械性质的相互作用,纤维素聚合度 (DP),化学成分,键,结晶性和角化.
主要方法:
- 人工干燥热加速老化手工制作的竹纸.
- 监测机械性质的变化,纤维素DP,化学成分 (纤维素,半纤维素,素),键强度,结晶性和角化.
主要成果:
- 纸张的机械性能显示出三个阶段:初始平原,快速下降,第二个平原.
- 纤维素和半纤维素减少,而红素保持稳定,与机械性能下降相关.
- 机械衰退的关键点发生在纤维素DP下降到600-400时.
- 纤维纤维纤维纤维链断裂的纤维脆化被增加的键和角化所抵消.
- 观察到第二个平原 (DP < 400),可能是由于半纤维素和素阻碍了纤维素聚合.
结论:
- 该研究阐明了手工制造纸的复杂降解途径,确定了纤维素DP的关键值.
- 研究结果提供了关于纤维素,半纤维素和素在纸张老化和稳定性中的作用的见解.
- 结果可以为改善古代书籍和纸质文化遗产的保存策略提供信息.
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