COMPATIBILITY STUDIES ON SOLUTION OF POLYSTYRENE /POLY (METHYL METHACRYLATE) AND POLY (VINYL CHLORIDE) / POLY (METHYL METHACRYLATE) BLENDS USING VISCOMETRY, FOURIER TRANSFORMS INFRARED SPECTROSCOPY AND DENSITY METHODS

COMPATIBILITY STUDIES ON SOLUTION OF POLYSTYRENE /POLY (METHYL METHACRYLATE) AND POLY (VINYL CHLORIDE) / POLY (METHYL METHACRYLATE) BLENDS USING VISCOMETRY, FOURIER TRANSFORMS INFRARED SPECTROSCOPY AND DENSITY METHODS Abstract: Studies on solution of polystyrene /poly(methyl methacrylate) and poly(vinyl chloride) /poly(methyl methacrylate) were carried out to ascertain the compatibility of the polymer-polymer blends at temperature of 300C […]

EXERGY AND ECONOMIC ANALYSES OF POLYMER ELECTROLYTE MEMBRANE (PEM) FUEL CELL SYSTEM CONFIGURATIONS

Abstract: One of the major problems facing commercialization of fuel cell systems, especially polymer electrolyte membrane (PEM) fuel cell systems is cost. Various researchers have reported different system configurations which perform differently in terms of energy utilization and cost. It is therefore important to determine the best system configuration in terms of both energy utilization […]

EFFECT OF ACRYLIC POLYMER DISPERSIONS ON WATER VAPOUR PERMEABILITY AND SOME OTHER PHYSICAL PROPERTIES OF FINISHED LEATHERS

EFFECT OF ACRYLIC POLYMER DISPERSIONS ON WATER VAPOUR PERMEABILITY AND SOME OTHER PHYSICAL PROPERTIES OF FINISHED LEATHERS Abstract   The effect of acrylic polymer dispersions on the water vapour permeability and some other properties of finished leathers have been studied. An acrylic based commercial binder AE 558 Nycil has been characterized and its effect when […]

SYNTHESIS, FORMULATION AND CHARACTERIZATION OF PHENOL FORMALDEHYDE/CHITOSAN COMPOSITES

SYNTHESIS, FORMULATION AND CHARACTERIZATION OF PHENOL FORMALDEHYDE/CHITOSAN COMPOSITES Abstract The methodology of the experiment involves three main stages. The first part describes the synthesis of the PF (novolac) resins. Novolac (resins) were prepared with an excess of phenol over formaldehyde under acidic conditions. PF molar ratio were varied from 1P:2F to 1P:8F. The structure of […]