Modification of Poly(Vinyl Chloride) for Biocompatibility Improvement and Biomedical Application-Review

Poly(vinyl chloride) is widely used in biomedical devices. This review deals with various applications of PVC and modified PVC in the medical field. Blended, grafted, and plasma-treated modified PVCs are described for various medical applications. Plasma treatment of PVC devices is a versatile and useful method for changing the surface properties, as compared to blending and grafting.     

A Novel Method for Enhanced Recovery of Lignin from Aqueous Process Streams

Abstract

This study demonstrates that acid precipitation of lignin in the presence of magnetite followed by an applied magnetic field provides a simple method for enhanced lignin recovery from an aqueous stream. The extraction procedure was shown to be sensitive to the relative charge of magnetite and solution pH. Under optimized conditions, 93 wt.% of the softwood lignin from a kraft cooking liquor could be recovered employing this novel separation approach.     

DRYING CHARACTERISTICS OF TAPIOKA

Experimcntal studies were carried out on a multipurposc industrial solar drycr having corrugated absorber with two glass covers. Drying charactcristics of Tapioka wcre obtained on the fixed bed portion of this dryer     

Study on Alloying Behaviour of Uranium Zirconium Alloy

Uranium–zirconium alloy is the potential candidate material as metallic fuels for nuclear reactor applications. Fabrication of uranium zirconium alloy can be made either by powder metallurgy or by melting method. Both the method has its own advantages and selection of the fabrication route depends on its application as fuel. In this work investigations were carried out on fabrication of uranium–zirconium alloys (i.e. U–40 wt% Zr, U–50 wt% Zr, U–60 wt% Zr and U–70 wt% Zr) using both powder metallurgy and melting method. It is heat treated at different conditions. Apart from other characterization, X-ray diffraction analysis was carried out to evaluate phase content of the alloy and reported here.