Journal
ACS APPLIED MATERIALS & INTERFACES
Volume 10, Issue 26, Pages 21765-21781Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acsami.8b07178
Keywords
Pickering emulsion; 2D particle; graphene oxide; Janus; composites
Funding
- CWRU College of Arts and Sciences
- NSF CAREER Award [1551943]
- NASA Harriett G. Jenkins Predoctoral Fellow [NNX13AR93H]
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Fluid-fluid interfaces have widespread applications in personal care products, the food industry, oil recovery, mineral processes, etc. and are also important and versatile platforms for generating advanced materials. In Pickering emulsions, particles stabilize the fluid fluid interface, and their presence reduces the interfacial energy between the two fluids. To date, most Pickering emulsions stabilized by 2D particles make use of clay platelets or GO nanosheets. These systems have been used to template higher order hybrid, functional materials, most commonly, armored polymer particles, capsules, and Janus nanosheets. This review discusses the experimental and computational study of the assembly of sheet-like 2D particles at fluid fluid interfaces, with an emphasis on the impact of chemical composition, and the use of these assemblies to prepare composite structures of dissimilar materials. The review culminates in a perspective on the future of Pickering emulsions using 2D particle surfactants, including new chemical modification and types of particles as well as the realization of properties and applications not possible with currently accessible systems, such as lubricants, porous structures, delivery, coatings, etc.
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