Dual (magnetic and pH) stimuli-reversible Pickering emulsions based on poly(2-(dimethylamino)ethyl methacrylate)-bonded Fe3O4 nanocomposites for oil recovery application
Document Type
Article
Publication Date
4-1-2020
Abstract
Stimuli-responsive Pickering emulsion system has received considerable scientific interests for myriad applications. In this contribution, nanocomposites (PDMNC) made of Fe3O4 nanoparticle and poly2-(dimethylamino) ethyl methacrylate] were prepared through a facile sonochemical in situ co-precipitation approach and were used in the preparation of Pickering emulsion system (PDMNC-PE). PDMNC-PE exhibited pH-responsive behavior and it was stable at pH ranging from 5 to 9. Upon magnetic exposure, PDMNC-PE underwent repeatable and rapid emulsification/demulsification triggered by a change in pH for at least six cycles. The stabilization/destabilization of PDMNC-PE was caused by the synergistic effect from magnetic force, surface hydrophobicity and zeta potential of PDMNC in response to pH, which resulted in the adsorption/desorption of PDMNC at the interface of the Pickering emulsions. The magnetic- and pH-reversible PDMNC-PE has a great potential for application in oil recovery.
Keywords
PDMAEMA, Fe3O4, Pickering emulsions, Stimuli-responsive, Oil recovery
Divisions
nanotechnology
Funders
School of Engineering of Monash University Malaysia,Monash University
Publication Title
Journal of Environmental Chemical Engineering
Volume
8
Issue
2
Publisher
Elsevier Science Ltd
Publisher Location
THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, OXON, ENGLAND