10.1021/acsami.8b01133.s001
Yue Zhang
Yue
Zhang
Tingting Ren
Tingting
Ren
Junhui He
Junhui
He
Inkjet
Printing Enabled Controllable Paper Superhydrophobization
and Its Applications
American Chemical Society
2018
Janus superwetting papers
Inkjet Printing Enabled Controllable Paper Superhydrophobization
superwettable
inkjet printing
Static water contact angles
paper-based
600 μ m
inkjet printing approach
dual-scale surface roughness
functionalization
2018-03-26 17:25:44
Journal contribution
https://acs.figshare.com/articles/journal_contribution/Inkjet_Printing_Enabled_Controllable_Paper_Superhydrophobization_and_Its_Applications/6027425
Papers’
intrinsic interconnected porous structures and hydrophilic
properties usually results in difficulty and complexity in partial
functionalization and regulation processes because the capillary effect
may lead to the fast diffusion of modifiers from one side to the other.
Here, we report a simple and innovative inkjet printing approach that
led to precise hydrophobic functionalization controllable in both
planar and steric dimensions. Fabrication of Janus superwetting papers
and superwettable patterned papers with high precision was achieved
by computer-controlled inkjet printing. Elaborate controls of ink
quantity enabled superhydrophobic functionalization on one side of
the paper substrate, with the opposite side superhydrophilic. Static
water contact angles up to 154° were obtained on the inkjet-printed
side of the paper, thanks to an appropriate combination of surface
chemistry with dual-scale surface roughness. Furthermore, paper-based
microfluidics were fabricated and the resolution of which were estimated
to be ca. 600 μm. Meanwhile, a paper-based analytical device
for colorimetric sensing of Ni(II) was designed and demonstrated based
on superwettable patterned papers by inkjet printing. The inkjet printing
approach reported here represents a key step forward in fabricating
Janus materials and complicate patterns for practical applications.