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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Modulating the interfacial properties of magnetic nanoparticles through surface modification with a binary polymer mixture towards stabilization of double emulsions

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Author(s):
Grein-Iankovski, Aline [1] ; Loh, Watson [1]
Total Authors: 2
Affiliation:
[1] Univ Estadual Campinas, UNICAMP, Inst Chem, POB 6154, BR-13083970 Campinas, SP - Brazil
Total Affiliations: 1
Document type: Journal article
Source: COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS; v. 586, FEB 5 2020.
Web of Science Citations: 2
Abstract

The combination of multiple functionalities in a single material is an interesting strategy for the emergence of new properties and consequently for improving its potential applications. We report here the preparation and surface modification of magnetic iron oxide nanoparticles by simply grafting a binary mixture of poly(ethylene oxide) and polymethylmethacrylate in order to modulate the nanoparticles surface properties and their interfacial properties. We demonstrate that the nanoparticles assembly and colloidal stability can be modulated by the polymers composition that afterwards reflects on their adsorption efficacy at water-oil interfaces. The binary-coated particles interestingly formed stable emulsions evidencing their effective amphiphilic character. These emulsions were characterized as oil-in-water and, particularly with polymer mixtures, double (water-in-oil-in-water) emulsions were obtained. Because of the use of magnetic nanoparticles, these emulsions are responsive to an external magnetic field pointing out to an interesting system with potentially applications in different areas and validating this methodology as a versatile approach to incorporate surface functionalities to iron oxide nanoparticles. (AU)

FAPESP's process: 18/16330-3 - Self-assembly of thermo- and magneto-responsive building blocks for the fabrication of novel biomarkers
Grantee:Aline Grein Iankovski
Support type: Scholarships abroad - Research Internship - Post-doctor
FAPESP's process: 17/04571-3 - Magnetic Janus nanoparticles
Grantee:Aline Grein Iankovski
Support type: Scholarships in Brazil - Post-Doctorate