The effect of nanoparticles on the transport and trapping of electric charges as well as on the emission of secondary electrons from two nanocomposites subjected to electron irradiation in a scanning electron microscope (SEM) is studied experimentally. These nanocomposites are polypropylene grafted with maleic anhydride (PPgMA) and bio-based polybutylene succinate (PBS) filled with organically modified montmorillonite (OMMT) clay nanoparticles (i.e. cloisite 20: C20). Samples having 0%, 1%, 2%, 3% and 5% clay nanoparticles by weight are used.

In order to determine the temporal evolution of the electrical charge trapped in each nanocomposite and that of its total electron emission yield (TEEY), simultaneous measurements of leakage and displacement currents, induced in the nanocomposites during and after electron irradiation, are performed using an appropriate device.

Besides, broadband Dielectric Spectroscopy (BDS) is also used to study change of electrical characteristics of the neat polymeric matrices with the concentration of clay nanoparticles, namely dielectric constant and electrical conductivity.

As surprising as it sounds, measurements indicate that not only the leakage current increases as the amount of clay nanoparticles increases but also the trapped charge. This behavior could be linked in particular to the change in the mobility of charge carriers due to the proliferation of interfaces between nanoparticles and neighboring materials (matrix). As the proliferation of interfaces is dependent on the state of dispersion of the clay nanoparticles within the host matrix, this state was studied using X-ray diffraction (XRD) analysis. The results highlight the impact of nanoparticle reinforcement on the electrical properties of studied polymers such as storage ability of electrical charges and also their transport.

实验研究了纳米粒子对电荷传输和俘获的影响以及对在扫描电子显微镜 (SEM) 中受到电子照射的两种纳米复合材料的二次电子发射的影响。这些纳米复合材料是用马来酸酐接枝的聚丙烯 (PPgMA) 和填充有有机改性蒙脱石 (OMMT) 粘土纳米颗粒（即 cloisite 20: C20）的生物基聚丁二酸丁二醇酯 (PBS)。使用按重量计具有0％、1％、2％、3％和5％粘土纳米颗粒的样品。

为了确定每个纳米复合材料中捕获的电荷及其总电子发射产率 (TEEY) 的时间演变，同时测量电子辐射期间和之后纳米复合材料中感应的泄漏电流和位移电流，使用适当的设备。

此外，宽带介电光谱 (BDS) 还用于研究纯聚合物基质的电特性随粘土纳米颗粒浓度的变化，即介电常数和电导率。

听起来令人惊讶，测量表明不仅泄漏电流随着粘土纳米颗粒数量的增加而增加，而且捕获的电荷也会增加。由于纳米颗粒和相邻材料（基质）之间界面的扩散，这种行为可能特别与电荷载流子迁移率的变化有关。由于界面的增殖取决于粘土纳米颗粒在主体基质内的分散状态，因此使用 X 射线衍射 (XRD) 分析研究了这种状态。结果突出了纳米颗粒增强对所研究聚合物的电性能的影响，例如电荷的存储能力及其传输。