Supplementary Information for
Superphobicity/philicity Janus Fabrics with Switchable, Spontaneous,
Directional Transport Ability to Water and Oil Fluids
Hua Zhou, Hongxia Wang, Haitao Niu, Tong Lin*
Australian Future Fibres Research and Innovation Centre, Institute for Frontier Materials, Deakin
University, Geelong, VIC 3216, Australia
* Corresponding author, Email: tong.lin@deakin.edu.au
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A. Directional transport of soybean oil.
Supplementary Figure S1. Still frames taken from movies showing soybean oil drop (45 µl) on the
coated fabric after 14 hours of UV irradiation, a) on the UV exposed surface (time interval is 0.28s),
b) on the unexposed surface (time interval is 0.55s).
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B. Fluids used for the transport test, their liquid properties and transport results.
Supplementary Table S1. Fluids properties and their liquid-transport performance*
Liquids
Surface tension Viscosity
Liquid transport
*
(mN/m, 20 °C)
(mPas, 20°C)
performance
Pentane
15.5
0.24
dual-directional
Silicon oil
21.5
9.30
dual-directional
Ethanol
22.3
1.14
dual-directional
Chloroform
27.1
0.56
dual-directional
Hexadecane
27.5
3.04
dual-directional
Cyclopentanone
28.2
1.29
dual-directional
Soybean oil
31.5
80.00
directional (2.8s**)
Olive oil
32.0
81.00
directional (3.0s**)
Styrene
35.0
0.76
directional (1.5s**)
Ethylene glycol
47.3
16.1
directional (3.5s**)
Tetraethylene glycol
48.0
58.3
directional (4.2s**)
Glycerol
63.4
1412.00
Non-transport
Water
72.8
1.00
Non-transport
Fabric sample: 14-hour UV-irradiated; ** Directional liquid transport time.
Soybean oil and ethylene glycol both show directional liquid transport ability. Soybean oil has
higher viscosity (80.00 mPas) than ethylene glycol (16.1 mPas). However, it has shorter penetration
time (2.8s) than ethylene glycol (3.5s). Similar result can also be found on olive oil and
tetraethylene glycol. These indicate that liquid viscosity should have a very small effect on the
directional transport ability.
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C. Directional transport of hexadecane.
Supplementary Figure S2. Still frames taken from movies showing hexadecane drop (45 µl) on
the coated fabric (UV irradiation for 10 hours), a) on UV exposed surface (time interval, 0.15s) and
b) unexposed surface (time interval, 0.2s).
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D. SEM images of the coated fabric before and after UV irradiation.
Supplementary Figure S3. SEM images of a) superamphiphobic fabric, b) & c) after 24 hours of
UV irradiation b) front surface and c) unexposed surface.
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E. FTIR spectra of the coated fabric before and after UV irradiation.
24h UV irradiation (UV exposed side)
24h UV irradiation (unexposed side)
Coated fabric
1500
3600 3300 3000 2700 2400
1200
900
600
-1
Wavenumber/cm
Supplementary Figure S4. FTIR spectra of coated fabric, the coated fabric after 24 hours UVirradiation (UV exposed surface and unexposed surface).
Supplementary Table S2. Assignment of changed FTIR peaks
Peaks
Bonds
Vibration modes
3100-3000
O-H
stretching
2700-2500
H-bond unionized carboxyl
dimer stretch vibrations
1715
C=O
stretching
1570
H-O
stretching
1500
C-O
bending
1238
Si-O
asymmetric stretching
1200
C-F
stretching
1174
C-OH
asymmetric bending
1150
C-F
antisymmetric stretching
1090
Si-O-Si
antisymmetric stretching
723
CH2
rocking
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F. ΔP change with irradiation time.
2.4
water
soybean oil
hexadecane
P (kPa)
2.0
1.6
1.2
0.8
0.4
0.0
0
5
10
15
20
25
30
Irradiation time (hour)
Supplementary Figure S5. Effect of irradiation time on breakthrough pressure difference (between
UV exposed and unexposed surface).
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G. Transport feature of different liquids on the UV-irradiated fabrics.
Supplementary Table S3. Transport feature of different liquids on the UV-irradiated fabrics*
UV irradiation
Fabric side
time (hour)
Water
CA
Pbreakthrough
Wetting portion
(°)
(kPa)
(%)
Soybean oil
Hexadecane
Water
Soybean oil
Hexadecane
UV exposed
148
95
0
2.25
1.96
1.67
unexposed
165
158
150
1.37
0.98
0.26
UV exposed
120
0
0
2.15
1.76
1.27
unexposed
164
155
145
0.89
0.29
0.24
UV exposed
0
0
0
1.94
1.03
0.39
unexposed
154
120
70
0.29
0.25
0.2
10
14
24
*The red highlighted data is related to directional liquid transport.
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Water Soybean oil
Hexadecane
0
20
55
0
52
85
48
100
100
H. Frames taken from high-speed digital camera to show upwards water transport on the
horizontally laid fabric.
Supplementary Figure S6. Frames taken from a high-speed digital camera to show upwards water
transport on the horizontally-laid fabric (24-hour UV irradiated), a) unexposed surface downwards
(time interval, 0.13s), b) UV exposed surface downwards (time interval, 0.11s).
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I. Upwards feeding hexadecane to a horizontally-laid fabric (24-hour UV-irradiated).
Supplementary Figure S7. Still frames taken from videos to show upwards feeding hexadecane to
the parallel-laid fabric (24-hour UV-irradiated), a) UV exposed surface downwards (time interval,
0.19s), b) unexposed surface downwards (time interval, 0.22s).
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J. Sideway directional transport of water and soybean oil.
Supplementary Figure S8. a) & b) Dropping water on the vertically placed fabric (24-hour UVirradiated) on a) the unexposed surface (time interval 0.2s) and b) UV exposed surface (time interval
0.13s), c) & d) dropping soybean oil sideway on the vertically placed fabric (14-hour UV-irradiated)
on c) the unexposed surface (time interval 0.45s) and d) the UV exposed surface (time interval 0.25s).
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Water
Soybean oil
Hexadecane
4
3
2
1
0
0
80
30
75
20
70
10
65
60
10 20 30 40 50 60 70 80
0
10 20 30 40 50 60 70
d 1.6
Viscosity (cp)
CA (°)
2.0
160
140
120
100
0
Temperature (°C)
Temperature (°C)
c
Saturation pressure
3
3
(10 Pa,N/m )
b
5
Penetration time (s)
a
Surface tension (mN/m)
K. Influence of temperature on liquid transport time, surface tension and contact angle.
5
10
20
50
1.2
0.8
0.4
0.0
70
Temperature (°C)
5
10
20
50
70
Temperature (°C)
Supplementary Figure S9. Influences of temperature on a) liquid transport time of water, soybean oil
and hexadecane, b) surface tension and saturated vapour pressure of water, c) water CA, and d) water
viscosity. (Fabric sample, 24-hour irradiated)
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