Jaggi_et_al_2015_acc.pdf (269.44 kB)
Measuring the flow properties of small powder samples using an avalanche tester
journal contribution
posted on 2016-04-19, 16:11 authored by V. Jaggi, Mark LeaperMark Leaper, Andrew J. InghamThe feasibility of using a small-scale avalanche tester to measure the flow properties of pharmaceutical lactose powders was examined. The modes of behavior observed in larger systems were displayed and showed a clear distinction between angular, free-flowing particles and more spherical particles of similar flow characteristics. Angular Lactohale LH100 particles showed slumping behavior at a rotational frequency of 0.33 Hz that disappeared at higher frequencies. Spherical lactose powder with a similar flow function to LH100 only showed rolling behavior under the same conditions, as did more cohesive powders LH200 and LH300. Further investigation of the LH100 data using fast Fourier analysis showed that the slumping frequency was one tenth of the rotational frequency.
History
School
- Aeronautical, Automotive, Chemical and Materials Engineering
Department
- Chemical Engineering
Published in
Drying TechnologyVolume
34Issue
6Pages
723 - 728Citation
JAGGI, V., LEAPER, M. and INGHAM, A., 2016. Measuring the flow properties of small powder samples using an avalanche tester. Drying Technology, 34 (6), pp.723-728.Publisher
© Taylor & FrancisVersion
- AM (Accepted Manuscript)
Publisher statement
This work is made available according to the conditions of the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0) licence. Full details of this licence are available at: https://creativecommons.org/licenses/by-nc-nd/4.0/Publication date
2016-03-28Notes
This is an Accepted Manuscript of an article published by Taylor & Francis in Drying Technology on 27/07/2015, available online: http://dx.doi.org/10.1080/07373937.2015.1072093.ISSN
0737-3937eISSN
1532-2300Publisher version
Language
- en