LAUSR

This research investigates the effect of incorporating sodium alginate (SA), an economical, nontoxic, and environmentally benign biopolymer, as a filler in blends of polyvinylidene fluoride (PVDF) and thermoplastic polyurethane (TPU). The objective is to enhance their structural, optical, and dielectric properties, making them suitable for use as economical composite membranes in optoelectronic and electrical devices. XRD and FTIR characterizations examined the structural alterations caused by the incorporation of SA into the PVDF/TPU blend. The UV‐optical absorption enhancement displays blue shifts with increasing optical band gap, as assessed using diffuse reflectance spectroscopy. Furthermore, the dielectric relaxation and ac conductivity behavior were methodically investigated, demonstrating improved dielectric characteristics in the SA‐doped blends. The interaction among composition, structure, and functional qualities illustrates that sodium alginate serves as a potent addition for optimizing the performance of PVDF/TPU composites, providing a means for the advancement of innovative, sustainable materials for electrical, UV shielding, and photonic applications.