层状纤维素复合材料在扫描及透射电子显微镜下的微观结构表征  

Microstructure Characterization of Layered Cellulose Nanocomposites Using Scanning Electron Microscope&Transmission Electron Microscope

作　　者：曾红霞[1] 陈霞[1] 卢照 丁雨葵 宋武林[1] 赵健全[1] ZENG Hongxia;CHEN Xia;LU Zhao;DING Yukui;SONG Wulin;ZHAO Jianquan(Analytical and Testing Center,Huazhong University of Science and Technology,Wuhan 430074,China)

机构地区：[1]华中科技大学分析测试中心,湖北武汉430074

出　　处：《分析测试技术与仪器》2025年第1期22-26,共5页Analysis and Testing Technology and Instruments

基　　金：湖北省自然科学基金面上项目(2023AFB502);华中科技大学实验技术研究项目(202372)。

摘　　要：高分子材料的结构决定其性能,研究高分子材料的形态和结构十分重要.针对层状高分子复合材料的内部填料,其分散性和界面结合状态的分析结果是否可靠,与表征手段密切相关.采用液氮脆断–扫描电子显微镜和超薄切片–透射电子显微镜技术分别对纤维素纳米晶/还原氧化石墨烯(CNC/RGO)、纤维素纳米晶/氮化硼纳米片(CNC/BNNS)、纤维素纳米晶/银纳米线(CNC/AgNW)高分子复合材料进行断面形貌分析,研究不同表征方法对材料微观结构分析的影响.结果表明,超薄切片–透射电子显微镜技术可直观表征纳米填料的分布和界面状态,进而为高分子复合材料的有序结构表征提供思路.The structure of polymer materials determines their properties.Studying the morphology and structure of polymer materials is crucial.The reliability of the analysis results on the dispersion and interfacial state of the internal fillers of polymer composites is closely related to the characterization methods.The liquid nitrogen brittle fracturedscanning electron microscopy and ultrathin section-transmission electron microscopy were used to characterize the section structure of layered polymer nanocomposite such as cellulose nanocrystal/reduced graphene oxide(CNC/RGO),cellulose nanocrystal/boron nitride nanosheet(CNC/BNNS),and cellulose nanocrystal/silver nanowire(CNC/AgNW),respectively.And the effect of different sample characterization methods on the microstructure analysis of materials was investigated.The results indicated that the ultrathin section-transmission electron microscopy can be used as a suitable method for researching the distribution and interface state of nanofillers,providing a guidance for the ordered-structure characterization of polymer nanocomposites.

关 键 词：高分子复合材料 超薄切片 透射电子显微镜 有序结构 

分 类 号：O656.9[理学—分析化学]