In this work, Rhodiasolv® PolarClean was employed as a more sustainable solvent for the preparation of poly(vinylidene fluoride-hexafluoropropylene) (PVDF-HFP) flat sheet membranes via phase inversion technique by coupling vapour induced separation (VIPS) and non-solvent (NIPS) processes. Preliminary calculations based on Hansen solubility parameters well predicted solubilization polymer in sel...

The corrosion inhibition of mild steel in 1M H2SO4 by polyvinyl pyrrolidone (PVP) and the synergistic effect of iodide ions were investigated using weight loss and hydrogen evolution methods in the temperature range of 30 – 60 o C. The corrosion rates of mild steel decreased with the increasing concentration of PVP, while the inhibition efficiency (%I) increased. The inhibition efficiency of PV...

Development of transdermal system mainly focused on formulation and characterization of monolithic matrix type transdermal drug delivery system of diltiazem hydrochloride for the treatment of mild to moderate hypertension. In this study, seven formulations were prepared in different ratio of film forming polymers. Formulations TDDS1 to TDDS7 were composed of carboxy methyl cellulose, polyvinyl ...

The semi-IPN hydrogel membranes of polyvinyl pyrrolidone (PVP) and beta-chitosan were synthesized by crosslinking beta-chitosan with glutaraldehyde. Hydrogel membranes were characterized by spectroscopic, swelling, thermal and mechanical properties. The in vitro biocompatibility of hydrogel membranes was studied by haemorheological method. These hydrogels have water contents in the range of 60-...

The technique of electrospinning was employed to fabricate uniform 1-D inorganic–organic composite nanofibers from alcoholic solutions containing polyvinyl pyrrolidone (PVP) and suitable aqueous precursors of yttrium and zirconium ions. Upon firing and sintering under carefully pre-selected time-temperature profiles, yttria-stabilized zirconia nanofibers retaining the original morphological fea...

In our study we investigated the release mechanisms of coated oral dosage forms more deeply. The aim of the study was to monitor the buffer induced leaching out of water soluble compounds from Kollicoat SR films and to relate this process to the film properties and the release kinetics. Propranolol HCl tablets were coated with different amounts and ratios of polyvinyl acetate (Kollicoat SR) and...

Abstract Study on the application of nanofibers in food active packaging has been a research hotspot recent years. In this work, solution blow spinning (SBS) was applied to rapidly fabricate polycaprolactone (PCL), polyvinyl pyrrolidone (PVP), and PCL/PVP nanofibrous films encapsulate chlorogenic acid (CGA). All showed uniform smooth nanofibers, Fourier transform infrared spectroscopy X-ray dif...

Transparent wood (TW), a new type of composite material with good optical transmittance and excellent mechanical properties, has attracted great interest in recent years. In this study, hydrogen peroxide strategy was used on rubber (Hevea brasiliensis Muell. Arg) to eliminate lignin hemicellulose. Subsequently, delignified combined each three impregnants refractive index similar that cellulose ...

Infusions and extracts of different grapes inactivated poliovirus; agents responsible for this property resided in the skin of the grape. Commercial grape juice at both natural and neutral pH inactivate various enteric viruses and herpes simplex virus; a 1,000-fold reduction in poliovirus infectivity occurred after incubation with grape juice, pH 7.0, for 24 h at 4 degrees C. A variety of wines...