不同分子质量水溶性壳聚糖在纸质文献加固中的应用研究  

Study on the Application of Water⁃soluble Chitosan of Different Molecular Weights in the Reinforcement of Paper Documents

作　　者：刘建安[1,2] 葛鸽 王欢欢 樊慧明 LIU Jian’an;GE Ge;WANG Huanhuan;FAN Huiming(State Key Lab of Pulp and Paper Engineering,South China University of Technology,Guangzhou,Guangdong Province,510640;Lingnan Literature Preservation Research Center,Guangzhou,Guangdong Province,510640)

机构地区：[1]华南理工大学制浆造纸工程国家重点实验室,广东广州510640 [2]岭南文献保护研究中心,广东广州510640

出　　处：《中国造纸》2024年第5期116-123,共8页China Pulp & Paper

基　　金：广州市科技计划项目(GZDD201808);广州市社会科学界联合会(202103260039);华南理工大学制浆造纸国家重点实验室(2020ZR03)。

摘　　要：本研究采用乙酸酐制备了不同分子质量的水溶性壳聚糖(WSC-3、WSC-10、WSC-20、WSC-30和WSC-60)并用作修复液,探究其对纸质文献加固及耐老化的效果。结果表明,与未经加固处理的纸张(原纸)相比,采用不同分子质量的水溶性壳聚糖加固处理后,纸张的强度性能有所提升,白度下降幅度较小,色差变化较小,pH值和碱储量均增加。纸张加速老化后,与原纸相比,加固处理后纸张的强度性能下降幅度明显较小,其中WSC-30加固处理后纸张的抗张指数、撕裂指数、零距抗张强度的保留率分别提升了9.7、7.4、4.5个百分点,外观形貌、白度和色差等相差较小。In this study,water-soluble chitosan with different molecular weights(WSC-3,WSC-10,WSC-20,WSC-30 and WSC-60)were prepared by acetic anhydride,which were used as restoration liquids to investigate their effects on the reinforcement and ageing resistance of paper documents.The results showed that compared with the paper before reinforcement treatment(original paper),the strength properties of the papers after reinforcement treatment with water-soluble chitosan of different molecular weights were enhanced,the whiteness was slightly decreased,the colour difference had a minimal change,and pH value and alkali storage capacity both increased.After accelerated aging,the strength properties of the reinforced treated papers showed a significantly smaller decrease compared to the original paper,reten‐tion rates of the tensile index,tear index,and zero-distance tensile strength of the WSC-30 reinforced treated paper increased by 9.7,7.4,and 4.5 percent points,respectively,while the appearance and morphology,whiteness,and colour difference showed little variation.

关 键 词：水溶性壳聚糖 分子质量 纸质文献 增强加固 

分 类 号：TS761.1[轻工技术与工程—制浆造纸工程]