Journal
RSC ADVANCES
Volume 5, Issue 124, Pages 102378-102383Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c5ra20280a
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Funding
- National Basic Research Program of China [2014CB931802, 2013CB834705]
- Fundamental Research Funds for the Central Universities [YWF-15-HHXY-021]
- China Scholarship Council
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We prepared porous montmorillonite (MMT) clay/poly acrylic acid (PAA) composite surfaces and achieve different oil adhesion by controlling the MMT arrangement in the pore wall. Characterization of the adhesion indicates that the disordered MMT/PAA porous films can serve as low adhesive surfaces both in acidic and basic aqueous phases. The switchable oil adhesion is attributed to the change of the triple-phase liquid/liquid/solid contact line (TCL) continuity induced by the MMT arrangement in the pore wall and different hydrogen bonding interactions. These findings will help us to design novel adhesive materials by adjusting the microstructure in the film, which will be used for the construction of the future generation of microdevices and have potential applications in liquid transportation, biochemical separation, in situ detection, microfluid systems, and other areas.
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