 |
Journal articles
Behaviour of hybrid inside/out Janus nanotubes at an oil/water interface. A route to self-assembled nanofluidics?
Abstract : Imogolites are natural aluminosilicate nanotubes that have a diameter of a few nanometers and can be several microns long. These nanotubes have different chemical groups on their internal (Si-OH) and external (Al-OH-Al) surfaces, that can be easily functionalised independently on both surfaces. Here we show that taking advantage of the particular shape and chemistry of imogolite, it is possible to prepare inside/out janus nanotubes. Two kinds of symmetric janus nanotubes are prepared: one with an external hydrophilic surface and an internal hydrophobic cavity (imo-CH3) and one with an external hydrophobic surface and a hydrophilic internal cavity (OPA-imo). The behaviour of such inside/out janus nanotubes at oil/water interfaces is studied. The OPA-imo adsorbs strongly at the oil/water interface and is very efficient in stabilising water-in-oil emulsions through an arrested coalescence mechanism. Imo-CH3 also adsorbs at the oil/water interface. It stabilises oil-in-water emulsions by inducing slow oil-triggered modifications of the viscosity of the continuous phase. The possible transport of small molecules inside the imo-CH3 nanotubes is evidenced, opening up routes towards selfassembled nanofluidics.
Cited literature [26 references]
https://hal-cea.archives-ouvertes.fr/cea-01378819
Contributor : Serge Palacin <>
Submitted on : Monday, October 10, 2016 - 6:20:24 PM
Last modification on : Thursday, November 5, 2020 - 11:38:29 AM
Long-term archiving on: : Saturday, February 4, 2017 - 1:30:44 AM
Contributor : Serge Palacin <>
Submitted on : Monday, October 10, 2016 - 6:20:24 PM
Last modification on : Thursday, November 5, 2020 - 11:38:29 AM
Long-term archiving on: : Saturday, February 4, 2017 - 1:30:44 AM
File
c6fd00034g.pdf
Publisher files allowed on an open archive