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Amir Sada Khan   Dr.  University Lecturer 
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Amir Sada Khan published an article in December 2015.
Top co-authors
Chong Fai Kait

55 shared publications

Universiti Teknologi PETRONAS (UTP)

Pervaiz Ahmad

38 shared publications

University of Malaya

Nawshad Muhammad

2 shared publications

COMSATS Institute of Information Technology

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Article 0 Reads 2 Citations Impact of Ball-Milling Pretreatment on Pyrolysis Behavior and Kinetics of Crystalline Cellulose Amir Sada Khan, Zakaria Man, Mohammad Azmi Bustam, Chong Fai... Published: 30 December 2015
Waste and Biomass Valorization, doi: 10.1007/s12649-015-9460-6
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Effect of ball-milling pretreatment on pyrolysis characteristics of cellulose was studied by thermogravimetric analysis (TGA) at four different heating rates; 5, 10, 20, and 40 K/min. Variation in the thermal stability and activation energy of cellulose with ball-milling were calculated by TGA Kinetics using Kissinger, Kissinger–Akahira–Sunose, Flynn–Wall–Ozawa and Starink model free methods. Results demonstrated that ball-milling reduced the thermal stability and activation energy of cellulose. The original and ball-milled cellulose were thoroughly characterized by Fourier-transform infrared spectroscopy, X-ray diffraction, and Scanning electron microscopy. X-ray diffraction analysis revealed that ball-milling decreased the crystallinity of cellulose from 93 to 51 %. The results suggested that ball-milling pretreatment led to effective disruption of crystalline cellulose to amorphous cellulose. It is, therefore, concluded that the ball-milled cellulose can easily become a useful source of chemicals and energy than crystalline cellulose.