Imperial College London

DrJerryHeng

Faculty of EngineeringDepartment of Chemical Engineering

Reader in Particle Technology
 
 
 
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Contact

 

+44 (0)20 7594 0784jerry.heng

 
 
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Location

 

417AACE ExtensionSouth Kensington Campus

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Summary

 

Publications

Citation

BibTex format

@article{Shah:2014:10.1016/j.ijpharm.2014.09.018,
author = {Shah, UV and Olusanmi, D and Narang, AS and Hussain, MA and Tobyn, MJ and Heng, JYY},
doi = {10.1016/j.ijpharm.2014.09.018},
journal = {International Journal of Pharmaceutics},
pages = {592--596},
title = {Decoupling the contribution of dispersive and acid-base components of surface energy on the cohesion of pharmaceutical powders},
url = {http://dx.doi.org/10.1016/j.ijpharm.2014.09.018},
volume = {475},
year = {2014}
}

RIS format (EndNote, RefMan)

TY  - JOUR
AB - This study reports an experimental approach to determine the contribution from two different components of surface energy on cohesion. A method to tailor the surface chemistry of mefenamic acid via silanization is established and the role of surface energy on cohesion is investigated. Silanization was used as a method to functionalize mefenamic acid surfaces with four different functional end groups resulting in an ascending order of the dispersive component of surface energy. Furthermore, four haloalkane functional end groups were grafted on to the surface of mefenamic acid, resulting in varying levels of acid-base component of surface energy, while maintaining constant dispersive component of surface energy. A proportional increase in cohesion was observed with increases in both dispersive as well as acid-base components of surface energy. Contributions from dispersive and acid-base surface energy on cohesion were determined using an iterative approach. Due to the contribution from acid-base surface energy, cohesion was found to increase ∼11.7× compared to the contribution from dispersive surface energy. Here, we provide an approach to deconvolute the contribution from two different components of surface energy on cohesion, which has the potential of predicting powder flow behavior and ultimately controlling powder cohesion.
AU - Shah,UV
AU - Olusanmi,D
AU - Narang,AS
AU - Hussain,MA
AU - Tobyn,MJ
AU - Heng,JYY
DO - 10.1016/j.ijpharm.2014.09.018
EP - 596
PY - 2014///
SN - 1873-3476
SP - 592
TI - Decoupling the contribution of dispersive and acid-base components of surface energy on the cohesion of pharmaceutical powders
T2 - International Journal of Pharmaceutics
UR - http://dx.doi.org/10.1016/j.ijpharm.2014.09.018
UR - http://hdl.handle.net/10044/1/24089
VL - 475
ER -