儿茶酚化纳米纤维素增黏水凝胶的制备及其性能研究  

Preparation and Properties of Catecholized Nanocellulose Tackifying Hydrogels

作　　者：孙贤昊 程正柏 刘莹莹 马淑静 王焱 杨玉杰 金星明 林兆云 刘洪斌[1] SUN Xianhao;CHENG Zhengbai;LIU Yingying;MA Shujing;WANG Yan;YANG Yujie;JIN Xingming;LIN Zhaoyun;LIU Hongbin(Tianjin Key Lab of Pulp and Paper,College of Light Industry Science and Engineering,State Key Lab of Biobased Fiber Manufacturing Technology,Tianjin University of Science and Technology,Tianjin,300457;Zhejiang Jingxing Paper Joint Stock Co.,Ltd.,Pinghu,Zhejiang Province,314214;Beijing Shieldry Technology Co.,Ltd.,Beijing,102600;Key Lab of Pulp and Paper Science&Technology of Ministry of Education,Qilu University of Technology(Shandong Academy of Sciences),Ji’nan,Shandong Province,250353)

机构地区：[1]天津科技大学轻工科学与工程学院,天津市制浆造纸重点实验室/生物源纤维制造技术国家重点实验室,天津300457 [2]浙江景兴纸业股份有限公司,浙江平湖314214 [3]北京施澳德瑞科技有限公司,北京102600 [4]齐鲁工业大学(山东省科学院)制浆造纸科学与技术教育部重点实验室,山东济南250353

出　　处：《中国造纸》2025年第1期21-28,共8页China Pulp & Paper

基　　金：中国博士后科学基金74批面上项目(2023M742616);浙江景兴纸业股份有限公司校企合作项目;齐鲁工业大学制浆造纸科学与技术教育部重点实验室开放基金(KF202010)。

摘　　要：本研究采用自由基聚合技术,在室温下成功合成了具有优异拉伸和黏附性能的生物质基水凝胶。在室温下利用多巴胺对纳米纤维素进行改性得到PCNF,将其加入水凝胶体系中,有效提高了水凝胶的机械性能(断裂应变1250%和断裂应力82.0 kPa)。同时,利用儿茶酚基团的可逆氧化还原反应,赋予水凝胶较好的黏附性。结果表明,复合水凝胶在金属铁上的黏合强度高达22.50 kPa。此外,该水凝胶组装的应变传感器表现出良好灵敏度(GF=2.768)、宽线性应变范围(高达500%,R2=0.99)、较好的响应时间(300 ms)和良好的稳定性。In this study,biomass-based hydrogel with good tensile and adhesion properties was rapidly synthesized at room temperature via free radical polymerization technology.PCNF was obtained by modifying the nanocellulose using polydopamine at room temperature.The mechanical properties of the hydrogel were improved effectively by the addition of PCNF to the hydrogel system,with breaking strain of 1250%and breaking stress of 82.0 kPa.At the same time,the reversible redox reaction of catechol groups was used to endow the hydrogel with good adhesion.The adhesion strength on metallic iron was as high as 22.50 kPa.In addition,hydrogel-based strain sensors exhibited good sensitivity(GF=2.768),wide linear strain range(up to 500%,R2=0.99),good response time(300 ms),and good stability.

关 键 词：纳米纤维素 水凝胶 黏附性 传感 

分 类 号：TS7[轻工技术与工程—制浆造纸工程]