有机-无机复合材料中无机相分散度三维荧光分析  

Three-dimensional fluorescent evaluation on dispersion state for inorganic nanofiller in organic-inorganic composites

作　　者：田锐[1] 王沛力 吕超[1] 段雪[1] TIAN Rui;WANG Peili;LYU Chao;DUAN Xue(State Key Laboratory of Chemical Resource Engineering,College of Chemistry,Beijing University of Chemical Technology,Beijing 100029,China)

机构地区：[1]北京化工大学化学学院,化工资源有效利用国家重点实验室,北京100029

出　　处：《化工学报》2021年第6期3002-3013,共12页CIESC Journal

基　　金：国家自然科学基金重点项目(21838007);国家自然科学基金青年基金项目(21701004)。

摘　　要：有机-无机复合材料因其优异的性能广泛应用于多个行业及领域,无机相分散度是决定复合材料质量、保证产品性能发挥的重要因素。因此,对复合材料中无机相分散度的有效评价是构筑高品质复合材料的关键步骤。本文介绍了有机-无机复合材料中无机相分散度的传统表征方法及亟待解决的问题。针对这些问题,综述了三维荧光成像法对有机-无机复合材料中无机相分散度的可视化评价研究进展:通过前染修饰、后染定位两种染色技术实现对无机相的染色识别;基于三维成像技术对复合材料中无机相进行定位及微观形貌分析;对无机相在介观尺度、三维空间的分散度进行定性及定量分析。该方法不仅适用于对复合材料制备工艺的筛选,也可用于对成品材料的现场无损分析。最后总结并展望了复合材料结构可视化的未来研究方向。Organic-inorganic composites have been widely applied due to their superior performances.Notably,the dispersion state of the inorganic nanofillers played significant roles in determining the quality and performance of the composites.It is of great importance to evaluate the dispersion state of inorganic nanofillers so that to construct organic-inorganic composites with designed performances.This paper introduced the traditional techniques and progress in the evaluation of the dispersion state for inorganic nanofiller in the composites.Some difficulties involving the sampling method and the scope of the measurement need to be solved.To this end,three-dimensional visualization of inorganic nanofillers in the composites has been proposed and discussed in this paper.Based on the fluorescent labelling of the inorganic nanofillers,including the pre-modification and post-labelling techniques,the inorganic nanofillers showed decent fluorescent emission.Three-dimensional imaging techniques were employed to acquire the location of inorganic nanofillers and the three-dimensional morphologies of the composites.Both qualitative and quantitative analysis have been applied to evaluate the dispersion state for inorganic nanofillers.The proposed fluorescent evaluation methodology can be adapted not only in the optimization of the technical process,but also in the non-destructive analysis of the finished products.In addition,the prospect of the structural visualization in organic-inorganic composites has also been discussed.

关 键 词：复合材料 成像 显微结构 分散度 三维定量分析 水滑石 

分 类 号：TQ321[化学工程—合成树脂塑料工业]