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Aging Resistance Evaluation of Aged Paper Reinforced with Different Nanocelluloses

查看全文 作　　者：Xian [1,2]Cao;Bei [1,2]He;Jianlin [1,2]Wang;Chunhui [1,2]Zhang;Donglin [3]Tang;Qingyou [4]Liang;Chuanfu [1,2]Liu;Huiming [1,2]Fan;Junli [1,2]Ren 高影响力作者 机构地区：[1]State Key Lab of Pulp and Paper Engineering,School of Light Industry and Engineering,South China University of Technology,Guangzhou,Guangdong Province,510640,China;[2]Lingnan Literature Preservation Research Center,South China University of Technology,Guangzhou,Guangdong Province,510640,China;[3]School of Materials Science and Engineering,South China University of Technology,Guangzhou,Guangdong Province,510640,China;[4]Analytical and Testing Center,South China University of Technology,Guangzhou,Guangdong Province,510640,China高影响力机构 出　　处：《Paper And Biomaterials》索引2023年第8卷第3期,共10页高影响力期刊 基　　金：supported by the Fundamental Research Funds for the Central Universities of South China University of Technology(SCUT),China(No.2022ZYGXZR106);Science and Technology Plan Special Project of Guangzhou,China(No.GZDD201808). 摘　　要：Paper documents experience severe acidification and embrittlement.Nanocellulose is an excellent reinforcement material for paper documents owing to its compatibility and excellent mechanical strength.However,little research has been conducted on the aging resistance of nanocellulose-reinforced paper.In this study,six types of nanocelluloses were used to reinforce aged paper.The reinforcement and anti-aging performances were evaluated,and the anti-aging mechanism was further clarified.Nanocellulose with a high degree of polymerization can better enhance aged paper,and non-chemical nanocellulose also shows better anti-aging performance,such as nanocellulose prepared by mechanical or biological methods.However,nanocellulose prepared using chemical methods exhibits poor reinforcement and anti-aging performance.This is because it has a small particle size that is not beneficial for physical crosslinking with paper fibers.More importantly,the introduction of acidic or oxidizing groups on nanocellulose accelerates the acid hydrolysis and oxidation rate of paper fibers,especially nanocellulose prepared by 2,2,6,6-tetramethylpiperidine-1-oxyl oxidation,which should not be used to protect paper documents. 关 键 词：protection of paper documents NANOCELLULOSE REINFORCEMENT aging resistance
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