State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing 100029, China.
Analyst. 2018 Apr 30;143(9):2090-2095. doi: 10.1039/c8an00016f.
The uniform dispersion of silica fillers or other neutral fillers in the polymer matrix is significant for fabricating high-performance polymer-based composites. However, there is a long-standing challenge to provide a comprehensive, wide-area and real 3D distribution map to achieve direct visualization for the dispersion state of neutral silica. Herein, we propose a novel strategy for modifying silica fillers with commercial fluorophores to form fluorescent fillers in a standard manner. Through fluorescence imaging technology, we successfully observed the 2D-planar and 3D-spatial dispersion states of silica fillers in the polymer matrix. This success not only provides a visualized evaluation method for the spatial dispersion of an oxide filler, but also offers great potential in the further establishment of industrialized standards for the polymer-based composite industry.
为了制备高性能聚合物基复合材料，将二氧化硅填料或其他中性填料均匀分散在聚合物基体中非常重要。然而，长期以来一直面临着一个挑战，即提供全面、广泛和真实的 3D 分布图谱，以实现对中性二氧化硅分散状态的直接可视化。在此，我们提出了一种通过用商业荧光染料对二氧化硅填料进行改性，以标准方式形成荧光填料的新策略。通过荧光成像技术，我们成功地观察到了聚合物基体中二氧化硅填料的 2D 平面和 3D 空间分散状态。这一成功不仅为氧化物填料的空间分散提供了一种可视化的评价方法，而且在进一步建立聚合物基复合材料行业的工业化标准方面具有巨大的潜力。
