TY - JOUR
T1 - Fabrication of superhydrophobic surface with desirable anti-icing performance based on micro/nano-structures and organosilane groups
AU - Qi, Yanli
AU - Yang, Zhangbin
AU - Chen, Tingting
AU - Xi, Yulin
AU - Zhang, Jun
N1 - Publisher Copyright:
© 2019 Elsevier B.V.
PY - 2020/1/31
Y1 - 2020/1/31
N2 - A superhydrophobic surface was successfully obtained via the combination of specific micro/nano-structures and chemical modification. Herein, microstructures were developed by the poly (styrene-acrylonitrile) (SAN) copolymers through non-solvent induced phase separation method, while the hexamethyldisilazane-modified silica (SiO2) nanoparticles aggregate to form nanostructures. Consequently, the surface was covered with many more micro/nano-structures and organic groups, successfully leading to a superhydrophobic surface. The micro/nano-structures were mainly studied by scanning electron microscopy (SEM), whereas the surface chemistry was investigated by X-ray photoelectron spectroscopy (XPS). XPS analysis revealed that SiO2 nanoparticles tend to enrich on the surface with increasing SiO2 content, yet results showed that the surface wettability reached a saturated state with 5 wt% SiO2 content. With the addition of 5 wt% SiO2, the water contact angle of the relevant surface was 159°, performing superhydrophobicity. Simultaneously, the superhydrophobic surface performed desirable anti-icing property, where the water droplet kept unfrozen on the as-prepared surface for over 97 min at the temperature of −10 °C and humidity of 40%. In general, this study proposed a facile way to prepare superhydrophobic surface with desirable anti-icing property which might have potential applications against ice accumulation.
AB - A superhydrophobic surface was successfully obtained via the combination of specific micro/nano-structures and chemical modification. Herein, microstructures were developed by the poly (styrene-acrylonitrile) (SAN) copolymers through non-solvent induced phase separation method, while the hexamethyldisilazane-modified silica (SiO2) nanoparticles aggregate to form nanostructures. Consequently, the surface was covered with many more micro/nano-structures and organic groups, successfully leading to a superhydrophobic surface. The micro/nano-structures were mainly studied by scanning electron microscopy (SEM), whereas the surface chemistry was investigated by X-ray photoelectron spectroscopy (XPS). XPS analysis revealed that SiO2 nanoparticles tend to enrich on the surface with increasing SiO2 content, yet results showed that the surface wettability reached a saturated state with 5 wt% SiO2 content. With the addition of 5 wt% SiO2, the water contact angle of the relevant surface was 159°, performing superhydrophobicity. Simultaneously, the superhydrophobic surface performed desirable anti-icing property, where the water droplet kept unfrozen on the as-prepared surface for over 97 min at the temperature of −10 °C and humidity of 40%. In general, this study proposed a facile way to prepare superhydrophobic surface with desirable anti-icing property which might have potential applications against ice accumulation.
KW - Anti-icing property
KW - Micro/nano-structures
KW - Organosilane groups
KW - Superhydrophobic surface
UR - http://www.scopus.com/inward/record.url?scp=85073680104&partnerID=8YFLogxK
U2 - 10.1016/j.apsusc.2019.144165
DO - 10.1016/j.apsusc.2019.144165
M3 - 文章
AN - SCOPUS:85073680104
SN - 0169-4332
VL - 501
JO - Applied Surface Science
JF - Applied Surface Science
M1 - 144165
ER -