Study on Preparation and Characterization of Subsurface Silver Particulate Films on Polymer Blends of Polystyrene/Poly (2-Vinyl pyridine) /Poly (Vinylpyrollidone)/Poly (4-Vinyl pyridine)

In the last few decades, polymer nanocomposites have been an enormously growing topic of research for producing materials. When a little amount of nanosized particles is added to a polymer matrix, the polymer nanocomposite improves dramatically. Inorganic solid nanoparticles (usually in the shape of fibres, flakes, spheres, or tiny particles) improve the physical, structural, and mechanical properties of polymer matrix. Since polymer–nano composites have become a mainstay of the modern polymer industry, their durability in a variety of environments, as well as their degradability after their service life, are important research areas. The precise preparation processes, followed by testing and characterization, are essential for the successful application of nano particles. Surface modification can help to improve the inherent properties of nanoparticles and prepare nano composites that aren’t found in nature. As a result, some tools may be utilised to optimise the preparation of polymer nano composites based on their various properties such as electrical, optical, and morphological. This leads to a focus on polymer nanocomposite preparation and characterization. This chapter will provide an overview of silver particulate thin films deposited at a rate of 0.4 nm/s on softened polymer blends of Polystyrene (PS)/ Poly (2-vinyl pyridine) (P2VP), PS/ Poly (4-vinylpyridine) (P4VP), and Poly (vinylpyrollidone) (PVP)/P4VP at a temperature of 457 K in a vacuum of 810-6 Torr Electrical behaviour, optical characteristics, and scanning electron microscopy were used to investigate these particle thin films (SEM). Due to the creation of a highly agglomerated structure, silver films formed on softened PS and PVP have a very high room temperature resistance that approaches that of the substrate. Silver films on softened P2VP and P4VP, on the other hand, have a room temperature resistance in the tens to hundreds of M/, which is desirable for device applications. At room temperature, silver films on PS/P2VP, PS/P4VP, and PVP/P4VP composites show resistance. The optical and plasmonic response of Ag nanoparticles encapsulated in thin layers of blends demonstrates nanoparticle encapsulation. The creation of substantially smaller, narrower dispersion and wide size distribution is indicated by the electrical characteristics and SEM of silver nanoparticles on thin layers of polymer blends.

Author(S) Details

Pratima Parashar Pandey
Department of Materials Science, Mangalore University, Mangalagangotri -574 199, India. and IILM College of Engineering & Technology, Greater Noida-201310, India.

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