Molecular Association Studies on Polyvinyl Alcohol at Different Concentrations

Surface Adsorption of Polyethylene Glycol and Polyvinyl Alcohol with Variable Molecular Weights on Zinc Oxide Nanoparticles

the effect of different concentrations of glycerol on properties of blend films based on polyvinyl alcohol-allysumhomolocarpum seed gum

introduction:packaging is an important factor in food industry and is dominated by petroleum-derived polymers. therefore, the amount of research involving the production and characterization of biodegradable films has increased substantially, mainly due to interest in minimizing the ecological impact caused by the use of synthetic packaging materials. several biopolymers have been exploited to ...

Ultrasonic Study of Molecular Association of Ternary Mixtures in Polyvinyl Alcohol, Stearates and Ethylene Glycol

Ultrasonic velocity measurements are reported for aqueous solutions of polyvinyl alcohol with different stearates such as zinc stearate and calcium stearate with plasticizer ethylene glycol at 303 K. The data obtained as a function of concentration indicate the magnitude of the contributions due to the relaxation of the backbone and of the side – chain acetyl group. A variety of the different t...

THERMOLUMINESCENCE STUDIES OF SrAl2O4: Eu PHOSPHORS AT DIFFERENT DY CONCENTRATIONS

Sr(NO3)2, Al(NO3)3, NH2CONH2, Eu2O3 and Dy2O3 are used as the raw materials for the preparation of SrAl2O4 (RE: Eu, Dy) precursor by the combustion synthesis technique (CST), which is widely known to prepare nano sized phosphors. The influence of varied concentration of Dy on crystal structure and optical properties is analyzed by means of Xray diffraction (XRD), scanning electron microscopy (S...

Polyvinyl alcohol particle superficial morphology.

We appreciated the research by Derdeyn et al (1) from the Mallinckrodt Institute of Radiology concerning the size and suspension characteristics of polyvinyl alcohol (PVA) particles. We do agree that both size and suspension characteristics of PVA represent relevant parameters affecting the aggregation of particles during injection. In addition to these two variables, we considered further para...