Synthesis, characterization, and antimicrobial evaluation of polyvinylalcohol-osthol composite films.

Although poly-vinyl alcohol (PVA) has certain mechanical drawbacks such as a weak barrier, it has widely been used in food packaging over the last many years. To increase the suitability of PVA (CHO) and render it ideal for food packaging, a diversity of studies have already been carried out. In the below-mentioned script, we, for the first time, report the use of natural product osthol in making a new composite with PVA for enhancing thermal, physicochemical, and antimicrobial properties.

Preparation and characterization of polyvinyl alcohol-piperic acid composite film for potential food packaging applications.

Piperic acid, a natural product-based derivative, has been used with polyvinyl alcohol for the first time to form polymer composite films for its suitable modification in physicochemical and antimicrobial properties. Initially, piperic acid was synthesized from piperine, a natural alkaloid extracted from black pepper (Piper nigrum). The solvent casting method was used for the synthesis of PVA-piperic acid composite films.

"Photovoltaic response of Carissa spinarum berry extract in dye-sensitized solar cell".

The presented work deals with the titanium dioxide semiconductor-based dye-sensitized solar cell (DSSC) performance analysis. The DSSC is sensitized with natural dye extracted from Carissa spinarum fruit with iodide-Tri-iodide as an electrolyte and graphite coated transparent conducting oxide as back electrode. The dye characteristics were investigated by Fourier transform infrared, ultraviolet-visible, and photoluminescence spectroscopy to study the associated functional groups, optical band gap, and emission, respectively.

Amorphization and disorder of PrFeO3 thin films after heavy ion irradiation.

We present structural, morphological, optical absorption and Raman study of 200 MeV Ag(15+) ion irradiated PrFeO(3) thin film of around 200 nm thickness deposited on LaAlO(3) [001] substrate by using the pulsed laser deposition technique. X-ray diffraction studies shows that it has an orthorhombic structure with Pbnm space group and is grown with (001)-orientation. The substrate-induced strain is found to be small and is found to increase for ion fluence.