Hydrophobic nanopatterning on a flexible gas barrier film by using a poly(dimethylsiloxane) elastomer.
In this work, we fabricated a hydrophobic and transparent gas barrier film via a nanopatterned poly(dimethylsiloxane) elastomer imprinting on an ultraviolet-curable polymer resin. A Ca degradation method (water permeation rate) and surface energy measurements were used to determine the level of modification of the surface characteristics. As a result, the decreased surface energy from 25.8 to 7.29 mN m(-1) led to a lower water vapor transmission rate from 3.06 x 10(-1) to 6.24 x 10(-2) g m(-2) day(-1) according to the degree of decreased Ca height from 100 nm. A tunable wettability is beneficial for application where controlling the direction of moisture flow is important, such as in flexible organic electronics.
Display and Nanosystem Laboratory, College of Engineering, Korea University, 5-1, Anam-Dong, Seongbuk-Gu, Seoul 136-713, Korea.
Jin-Hwan
JH
Choi
Young-Min
YM
Kim
Young-Wook
YW
Park
Tae-Hyun
TH
Park
Ki-Young
KY
Dong
Byeong-Kwon
BK
Ju
D004129:Dimethylpolysiloxanes / Q000737:chemistry*; D020724:Elastomers / Q000737:chemistry*; D004581:Electronics; D057927:Hydrophobic and Hydrophilic Interactions; D036103:Nanotechnology / Q000295:instrumentation / Q000379:methods; D013499:Surface Properties; D017155:Wettability
D004129:Dimethylpolysiloxanes; D020724:Elastomers; C013830:baysilon