Please use this identifier to cite or link to this item: https://hdl.handle.net/11147/14129
Title: Modifying pickering polymerized high internal phase emulsion morphology by adjusting particle hydrophilicity
Authors: Durgut, Enes
Zhou, Muchu
Aldemir Dikici, Betül
Foudazi, Reza
Claeyssens, Frederik
Keywords: Pickering emulsions
Rheology
Arrested coalescence
Particles
HIPE
PolyHIPE
Publisher: Elsevier
Abstract: This study investigates the use of submicron polymeric particles with varying crosslinking densities as the sole stabilizer for producing Polymerized High Internal Phase Emulsions (PolyHIPE). We establish a direct correlation between the crosslinking density and the hydrophilicity of the polymer particles. The hydrophilicity of these particles significantly influences the morphology and rheology of HIPEs. These differences manifest as various morphological variations in the resulting PolyHIPE templates. It was discovered that by increasing the crosslinker weight percentage in the particles from 0 % to 100 %, PolyHIPEs with semi-open, open, and closed porous structures can be obtained. Furthermore, non-crosslinked particles were observed to dissolve in the continuous phase, acting as macromolecular surfactants that generate small pores akin to surfactant-stabilized structures in PolyHIPE. These findings offer fresh insights into the relationship between particle localization at the interface, HIPE rheology, and the formation of pore throats in Pickering PolyHIPEs, leading to the creation of either closed or open porous networks. Additionally, interfacial rheological results demonstrate that particles synthesized with varying monomer-to-crosslinker ratios exhibit different interfacial elasticities, which are linked to PolyHIPE morphology.
URI: https://doi.org/10.1016/j.colsurfa.2023.132629
https://hdl.handle.net/11147/14129
ISSN: 0927-7757
1873-4359
Appears in Collections:Bioengineering / Biyomühendislik
Scopus İndeksli Yayınlar Koleksiyonu / Scopus Indexed Publications Collection
WoS İndeksli Yayınlar Koleksiyonu / WoS Indexed Publications Collection

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