The aim of the present study is to study the effect of poly-2-ethyl-2-oxazoline (Peox) intercalation on the structural, thermal, and dielectric properties of the Na-exchanged montmorillonite (M-Na). The nanocomposite was prepared by the intercalation of Peox into the montmorillonite M-Na. The X-ray diffraction analysis revealed a significant increase in the inter-planar distance from 11.7 to 21.2 Å. The infrared spectra depicted the characteristic vibrational bands of montmorillonite and Peox. Thermal analysis showed a good thermal stability below 600 K; above this temperature, Peox undergoes a thermal decomposition. The dielectric losses in M-Peox give raise to a couple of two-resolved relaxation process at low frequency at 320 and 405 K. On the other hand, the ac-conductivity of M-Peox exhibits much higher low frequency dispersion below 1 kHz. The vitreous transition of the polymer gives rise to higher dielectric losses and an enhancement of the electrical conductivity in the material with increasing temperature. In addition, both the dielectric losses and the ac-conductivity of M-Peox decrease above the softening point temperature.

本研究的目的是研究聚2-乙基-2-恶唑啉（Peox）插层对Na交换蒙脱石（M-Na）的结构，热学和介电性能的影响。通过将Peox插入蒙脱土M-Na中来制备纳米复合材料。X射线衍射分析表明，平面间距离从11.7到21.2Å显着增加。红外光谱描绘了蒙脱石和Peox的特征振动带。热分析表明在600 K以下具有良好的热稳定性。在此温度以上，Peox会发生热分解。M-Peox的介电损耗在低频下在320和405 K时引起了两个解析的弛豫过程。另一方面，M-Peox的交流电导率在1 kHz以下表现出更高的低频色散。随着温度的升高，聚合物的玻璃态转变会引起更高的介电损耗并提高材料的电导率。另外，在软化点温度以上，M-Peox的介电损耗和交流电导率都降低。