Biologie moléculaire : accès libre

Characterization of Carbon Pellets Prepared from Date Palm Leaves (Phoenix dactylifera L.) by Compression Pressure: X-ray Diffraction Measurements and Applications

Abstract

Fatima Musbah Abbas*, Zehbah Ali Al Ahmad, Rehab Omer Elnour Elgezouly and Abubaker Elsheikh Abdelrahman

Solid carbon pellets (SCPs) were prepared from the self-adhesive properties of palm leaves (Phoenix dactylifera L.) by compression pressure from 5 to 21 metric tons and carbonization at 1000°C. Characterizations of solid carbon pellets (SCPs) were carried out in terms of crystallites dimensions, lattice constant, Young's modulus, and volumetric strain experience. The Young’s was also estimated from the crystallites dimensions by applying the microscopic cross-linking model given by (Emmerich 1995) as a class of X-ray diffraction application. X-ray diffraction intensity shows that the structure of the SCPs is turbostatic, and its crystallite dimensions are improved by increasing the compressive pressure, while it is lattices constant remain constant. Increasing compressive pressure led to a gradual increase in Young’s modulus and volumetric strain experience. The crystallite dimensions, elastic modulus and volumetric strain could be facilely adjusted by changing the compression pressure. The estimated Young’s modulus from microscopic cross-linking model was in a good agreement with that measured by ultrasonic techniques, showing that the behavior of the Young’s modulus is related to the crystallite dimensions. These results can be concluded that the crystal dimension can play an essential role in the phenotypic and description of SCP pellets, indicating the applicability of microscopic cross-linking model to estimate the mechanical properties of the carbon materials.