Jump to main content
Jump to site search


Self-stripping of free-standing microparticle gel membranes driven by asymmetric swelling

Author affiliations

Abstract

Free-standing nanoparticle membranes, which are composed of inorganic nanoparticles and organic ligands, have attracted a lot of attention because of their excellent physical chemical properties and widespread applications such as in sensors, photonic crystals and SERS substrates. However, the self-assembly of micro-sized particles into a free-standing microparticle membrane, particularly actuated membranes, is still a burning challenge. Herein, we propose the concept of “microparticle gels” fully formed by anisotropic (core–satellite, yolk–shell) microparticles and design an uncustomary strategy that transforms micro-sized particles into microparticle gels by an acidification process. The as-prepared microparticle gels possess excellent film-forming properties, which benefit from chemical cross-linking and hydrogen bonding of open-loop epoxy groups. They are able to embed in a polyethylene terephthalate (PET) substrate at 120 °C to form a composite membrane with remarkable swelling properties. In addition, free-standing double-layered microparticle gel/PET membranes were formed on various substrates at lower temperatures with excellent self-stripping properties driven by asymmetric swelling in water. The self-stripping process can be controlled by salt concentration and stopped at a salt concentration of 25%.

Graphical abstract: Self-stripping of free-standing microparticle gel membranes driven by asymmetric swelling

Back to tab navigation

Supplementary files

Publication details

The article was received on 23 Mar 2017, accepted on 10 Jul 2017 and first published on 10 Jul 2017


Article type: Paper
DOI: 10.1039/C7TC01235G
Citation: J. Mater. Chem. C, 2017, Advance Article
  •   Request permissions

    Self-stripping of free-standing microparticle gel membranes driven by asymmetric swelling

    L. Tian, X. Li, W. Wang, Z. Ali and Q. Zhang, J. Mater. Chem. C, 2017, Advance Article , DOI: 10.1039/C7TC01235G

Search articles by author

Spotlight

Advertisements