Three Separate Regions in the Prepared Aniline-Palladium Mixture
Yuriy Semenyuk,
Orest Pereviznyk,
Oleksandr Reshetnyak,
Ivan Saldan
Issue:
Volume 3, Issue 1, February 2014
Pages:
1-4
Received:
15 December 2013
Published:
30 December 2013
Abstract: Polyaniline-palladium composite might be proposed for the electrode material in the oxidation of aliphatic alcohols (methanol, ethanol, ethylene glycol). Prepared mixture of aniline-palladium in sulfuric acid medium (0<рН<1) is investigated by SEM, PXD and FTIR. Obtained results confirm existence of three separate regions: polydisperse palladium powder with agglomerations size of ~0.5 micron in width and ~3-7 microns in length; single palladium particles (~0.5×0.2 micron) coated mainly by polyaniline form – emeraldine; aniline balls (diameter of ~2-5 microns) with ~0.2 atomic percent of Pd in their bulk and converted at the surface to emeraldine base and emeraldine salt.
Abstract: Polyaniline-palladium composite might be proposed for the electrode material in the oxidation of aliphatic alcohols (methanol, ethanol, ethylene glycol). Prepared mixture of aniline-palladium in sulfuric acid medium (0...
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Effect of Mixed Nanoparticles ZnS and Polyvinyl Alcohol (PVA) against Nanocomposite Mechanical Properties of PVA / ZnS
Makmur Sirait,
Saharman Gea,
Motlan,
Eddy Marlianto
Issue:
Volume 3, Issue 1, February 2014
Pages:
5-8
Received:
2 March 2014
Published:
30 March 2014
Abstract: This study was conducted to see the effect of a mixture of ZnS nanoparticles and PVA on the properties of nanocomposite PV / ZnS. Mixing is done with the sol-gel method, which dissolve ZnS nanoparticles and PVA with distilled water. Stirring is done through the magnet, with the angular velocity of 500 rpm, and heated at 80 ° C temperature. The solution that has been shaped gel then put into molds and then cooled naturally. Variations mixture of PVA: ZnS is (100:0)%, (99:1)%, (98:2)%, (97:3)% and (96:4)%. The results of mechanical tests showed that the average maximum tensile strength of 34.390 MPa obtained on the composition of the mixture of PVA: ZnS at (100:0)%, the average maximum elongation at break of 430.81% was obtained on the composition of the mixture of PVA: ZnS at (99 : 1)%, the average elastic modulus of 190.73 MPa maximum obtained on the composition of the mixture of PVA: ZnS at (98:2)%. This result is better because it is more equitable in terms of mixing and content conforms to the crosslinking better. DSC results obtained on the composition of the maximum melting temperature of PVA: ZnS at (97:3)% which is at a temperature of 224.39 ℃.
Abstract: This study was conducted to see the effect of a mixture of ZnS nanoparticles and PVA on the properties of nanocomposite PV / ZnS. Mixing is done with the sol-gel method, which dissolve ZnS nanoparticles and PVA with distilled water. Stirring is done through the magnet, with the angular velocity of 500 rpm, and heated at 80 ° C temperature. The solu...
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