About this Abstract |
Meeting |
2020 TMS Annual Meeting & Exhibition
|
Symposium
|
General Poster Session
|
Presentation Title |
N-62: Monodisperse Polystyrene Spheres: Studies on the Effects of Reaction Parameters on Particle Diameter and Colloidal Stability |
Author(s) |
Ikhazuagbe Hilary Ifijen, Esther U Ikhuoria, Aireguamen I Aigbodion, Stanley O Omorogbe |
On-Site Speaker (Planned) |
Esther U Ikhuoria |
Abstract Scope |
Herein, the synthesis of highly monodisperse polystyrene (PS) microspheres via surfactant-free emulsion polymerization process was successfully carried out. Various reaction conditions such as initiator amount, monomer amount, reaction temperature and stirring speed were varied with a view to studying the effect of these polymerization parameters on the particle diameter and colloidal stability of the synthesized PS microspheres. Microscopic analysis revealed that the as-synthesized particles are spherical in shape without any form of agglomeration. TGA analysis revealed that the prepared PS sample completely degrades at 465 oC. DLS analysis showed a reduction in the average particle diameters of the as-synthesized PS microspheres as the reaction temperature, stirring speed and initiator amount increased, whereas an increase in average particle diameter was observed with increased monomer amount. Zeta-potential values ranging from -30.10 mV to -39.50 mV which is indicative of stable colloidal dispersion of particles were seen for all the synthesized PS samples. |
Proceedings Inclusion? |
Undecided |