金属盐离子对纤维素离子凝胶性能的影响研究

Effect of Metal Salt Ions on the Properties of Cellulose Ion Gel

关键词:  竹纤维素  绿色凝胶  金属盐离子  机械性能  离子电导率

Key Words:bamboo cellulose  green gel  metal salt ion  mechanical properties  ionic conductivity

摘要:本研究利用竹纤维素构建导电凝胶的网络骨架，通过添加离子液体形成复合竹纤维素离子凝胶（CCIGel），并引入金属盐离子强化纤维素离子凝胶的性能。结果表明，ZnCl₂、CaCl₂和FeCl₃可激发纤维素-离子液体凝胶的成形，且CCIGel-Zn和CCIGel-Ca的机械性能均优于CCIGel-None；添加AlCl₃的体系无法形成凝胶。其中质量分数15%的ZnCl₂制备的CCIGel-Zn性能最为优异，其拉伸强度、韧性和离子电导率分别高达1.344 MPa、29.85 MJ/m³和47.1 mS/cm，透光率为86.9%。

Abstract:In this study， the bamboo cellulose was employed to construct the network backbone of conductive gel， thus forming the composite cellulose ionic gels （CCIGel） by adding the metal salt ions. The results showed that ZnCl₂， CaCl₂ and FeCl₃ could lead to the formation of CCIGel， and the mechanical properties of both CCIGel-Zn and CCIGel-Ca were stronger than CCIGel-None， while the system with the addition of AlCl₃ could not form the ion gel. The CCIGel-Zn with 15% ZnCl₂ had the most excellent performance with the tensile strength of 1.344 MPa， toughness of 29.85 MJ/m³， ionic conductivity of 47.1 mS/cm and the transmittance of 86.9%， respectively.