Young Researchers and Elites Club, Science and Research Branch, Islamic Azad University, Tehran, Iran.
J Colloid Interface Sci. 2017 Jan 15;486:249-254. doi: 10.1016/j.jcis.2016.09.080. Epub 2016 Sep 30.
The effect of percolation threshold on the mechanical properties of insulate polymer nanocomposites has been briefly investigated in literature. In this work, an approach is suggested to study the percolation threshold and interphase role in polymer/clay nanocomposites (PCN) by a model for tensile modulus. The percolation threshold is related to the aspect ratio of clay layers and the predictions of the suggested methodology are compared with the experimental data. A low percolation threshold is obtained by high aspect ratio of clay layers which increases the modulus. Also, the developed model suggests the accurate results compared to experimental data assuming the interphase role. According to the calculations, the best modulus of PCN is achieved by the thinnest clay layers and the thickest interphase between polymer and clay.
文献中简要探讨了渗透阈值对绝缘聚合物纳米复合材料力学性能的影响。在这项工作中，提出了一种通过拉伸模量模型研究聚合物/粘土纳米复合材料（PCN）中的渗透阈值和界面相作用的方法。渗透阈值与粘土层的纵横比有关，所提出方法的预测结果与实验数据进行了比较。高纵横比的粘土层获得了较低的渗透阈值，从而提高了模量。此外，与实验数据相比，所提出的模型在考虑界面相作用时给出了更准确的结果。根据计算，通过最薄的粘土层和聚合物与粘土之间最厚的界面相，可以获得 PCN 的最佳模量。
