Development of PVDF/Ni-MOF Nanocomposites with Improved Dielectric and Thermal Stability

PVDF/Ni-MOF nanocomposites were developed to achieve improved dielectric performance and thermal stability. A two-dimensional nickel-based metal–organic framework (Ni-MOF) was synthesized via a chemical route and incorporated into the poly(vinylidene fluoride) (PVDF) matrix at different weight fractions using the solvent casting technique. The structural and morphological characteristics of the prepared nanocomposites were analyzed using SEM and XRD. The XRD results revealed a transformation of PVDF toward the electroactive β-phase upon the addition of Ni-MOF, indicating enhanced structural ordering. Dielectric studies showed a typical decrease in dielectric constant with increasing frequency, while higher filler loadings led to reduced dielectric constant accompanied by increased dielectric loss. Thermal analysis (TGA/DSC) demonstrated that the incorporation of Ni-MOF significantly enhances the thermal stability of PVDF, attributed to strong intermolecular interactions between the polymer matrix and the nanofiller. These results highlight the potential of PVDF/Ni-MOF nanocomposites for advanced dielectric and thermal applications.

Dr. Rohan Sagar is a Postdoctoral Researcher in the Department of Materials Science and Engineering, National Chung Hsing University, Taichung 402, Taiwan. He received his Ph.D. in Physics from Dr. A.P.J. Abdul Kalam Technical University, India. He is currently serving as a reviewer for Springer Nature journals. Dr. Sagar holds one Indian patent on a CNT-GO-based ammonia gas sensor and has presented at multiple international conferences. With over 25 research publications, his expertise spans nanomaterials, polymer composites, and electrochemical sensors. He is a recipient of the UGC National Fellowship (JRF–SRF), India.