| Autor: |
BELLO, S. A., AGUNSOYE, J. O., ADEBISI, J. A., ANYANWU, J. E., BAMIGBAIYE, A. A., HASSAN, S. B. |
| Předmět: |
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| Zdroj: |
Annals of the Faculty of Engineering Hunedoara - International Journal of Engineering; May2017, Vol. 15 Issue 2, p149-157, 9p |
| Abstrakt: |
Synthesis of Al (1xxx) nanoparticles (Alnp) for polymer reinforcement has been presented. Carbonized coconut shell (CCSs) was used as solid interface/lubricant for ball-milling synthesis. Particle behaviour through FT-IR and XRD was studied. Scherrer's theoretical size calculation and SEM/TEM imaging sizes were performed on Alnp obtained at varied milling durations. Results obtained indicated a shift in infrared transmittance peaks and an increase in correlative intensities signifying elastic deformation-induced breakage of Alnp which caused their greater counts as the milling in progress. A minimum crystallite size (3.56 nm) implies that the minimum breakage (threshold) level of Alnp was reached at 46 hours. However, further milling up to 70 hours assisted in the size reduction of the coarse Alnp but agglomeration of the finest ones also occurred owing to Vandal Waal's attraction resulted from increasing particle surface energy. This was ascertained by bigger size (22.89 nm) of the finest Alnp obtained at 70 hours. A phase inconsistence observed from XRD patterns can be linked with the blockage of reflected rays from extremely fine phases of Alnp by relatively coarse nanocrystalline phases. XRD, SEM and TEM indicated a decrease in Alnp sizes with an increment in milling duration. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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