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.
作者
刘建安
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)
出处
《中国造纸》
CAS
北大核心
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)。
关键词
水溶性壳聚糖
分子质量
纸质文献
增强加固
water-soluble chitosan
molecular weight
paper document
enhanced reinforcement
作者简介
刘建安,博士,高级工程师,研究方向:纸质文献保护与利用、纤维基材成形技术与关键装备、造纸化学品的研究开发;通信作者:樊慧明,教授级高级工程师,研究方向:纸质文献保护与利用、纸页成形技术与工程、现代制浆造纸装备、清洁生产技术与装备。E-mail:hmfan@scut.edu.cn。
