纳米纤维素膜制备与表面纳微米结构化改造及其性能优化  

The Preparation of Nanocellulose Films and the Impact of Their Surface Nano/micro-scale Structuring on Performance

作　　者：马光瑞 尹雯琦 石志军[1] 杨光[1] MA Guangrui;YIN Wenqi;SHI Zhijun;YANG Guang(Department of Biomedical Engineering,College of Life Science and Technology,Huazhong University of Science and Technology,Wuhan 430074,China)

机构地区：[1]华中科技大学生命科学与技术学院生物医学工程系,湖北武汉430074

出　　处：《纤维素科学与技术》2025年第1期1-7,F0002,I0002,共9页Journal of Cellulose Science and Technology

基　　金：国家自然科学基金(编号52373235)。

摘　　要：本研究以纤维素纳米纤丝(CNF)与纤维素纳米晶体(CNC)为原料,运用刮刀法制备CNF/CNC复合膜。通过引入不同模板,实现复合膜表面纳米和微米级结构化。采用场发射扫描电子显微镜(FE-SEM)、原子力显微镜(AFM)、傅里叶变换红外光谱仪(FT-IR)、X射线衍射分析仪(XRD)、紫外分析仪、万能拉力机和接触角分析仪,对复合膜展开系统表征。结果表明,模板对纤维素晶体结构及红外特征峰影响微弱,却能成功构建复合膜表面微纳结构。经结构化处理,复合膜塑性和抗拉强度显著提升,延展率最大增幅15%,抗拉强度最大提升10MPa。此外,不同尺寸的表面结构,会使复合膜亲疏水性呈现差异。本研究为纤维素基复合膜表面结构化及在高性能材料领域的应用,提供了新思路。Composite films of cellulose nanofibrils(CNF)and cellulose nanocrystals(CNC)were prepared using the doctor blade method.By introducing different types of templates,nano-and micro-scale structures were successfully constructed on the surface of the composite films.The resulting films were systematically characterized using field emission scanning electron microscopy(FE-SEM),atomic force microscopy(AFM),Fourier transform infrared spectroscopy(FT-IR),X-ray diffraction(XRD),ultraviolet analysis,a universal tensile testing machine,and a contact angle analyzer.The results indicated that the selected templates did not significantly affect the crystalline structure of cellulose or its characteristic infrared peaks,but they effectively constructed nano-or micro-scale structures on the surface of the composite films.Additionally,the structural treatment significantly enhanced the plasticity of the composite films(with a maximum increase in elongation of 15%)and tensile strength(with a maximum improvement of 10 MPa).Further studies also revealed that structures of different sizes had a differentiated impact on the hydrophilicity and hydrophobicity of the composite films.This research provides new insights into the surface structuring of cellulose-based composite films and their application in high-performance materials.

关 键 词：纤维素纳米纤丝 纤维素纳米晶体 表面结构化 纳米纤维素复合膜 

分 类 号：TS71[轻工技术与工程—制浆造纸工程]