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- Title
Interfacial Assembly of Graphene Oxide: From Super Elastic Interfaces to Liquid‐in‐Liquid Printing.
- Authors
Kamkar, Milad; Erfanian, Elnaz; Bazazi, Parisa; Ghaffarkhah, Ahmadreza; Sharif, Farbod; Xie, Ganhua; Kannan, Aadithya; Arjmand, Mohammad; Hejazi, S. Hossein; Russell, Thomas P.; Fuller, Gerald G.; Sundararaj, Uttandaraman
- Abstract
Tailoring the oil/water (O/W) interface is a prerequisite for structuring these two immiscible liquids into prescribed architectures, i.e., liquid‐in‐liquid printing, which is an emerging area in material science. Here, assemblies of graphene oxide (GO) at O/W and air/W interfaces are characterized using a wide range of interfacial rheological techniques. It is shown that the GO nanosheets assemble at the interface, even at extremely low concentrations as low as 0.04 vol%, significantly increasing the elasticity at O/W or air/W interfaces. This is attributed to the combined hydrophobic and hydrophilic nature of GO. Interfacial elastic modulus of ≈1800 mN m−1 is achieved, making GO assemblies exceptional candidates for applications where stabilization of the O/W interface is indispensable. Herein, the super elastic character of the O/W interface with GO assemblies is capitalized for all‐liquid 2D printing in a low viscous oil, underscoring the utility of these all‐liquid systems for electronics, fluidic devices, and controlled release systems.
- Subjects
GRAPHENE oxide; MATERIALS science; FLUIDIC devices; ELASTIC modulus; NANOSTRUCTURED materials
- Publication
Advanced Materials Interfaces, 2022, Vol 9, Issue 6, p1
- ISSN
2196-7350
- Publication type
Article
- DOI
10.1002/admi.202101659