Superhydrophobicity and regeneration of PVDF/SiO2 composite films

被引：23

作者：

Liu, Tao ^{[1
]}

Li, Xianfeng ^{[1
]}

Wang, Daohui ^{[1
]}

Huang, Qinglin ^{[1
]}

Liu, Zhen ^{[1
]}

Li, Nana ^{[1
]}

Xiao, Changfa ^{[1
]}

机构：

[1] Tianjin Polytech Univ, Sch Mat Sci & Engn, State Key Lab Separat Membranes & Membrane Proc, Tianjin 300387, Peoples R China

来源：

APPLIED SURFACE SCIENCE | 2017年 / 396卷

基金：

中国国家自然科学基金;

关键词：

Superhydrophobicity; Regeneration; Composite film; Polyvinylidene fluoride (PVDF); SiO2; nanoparticles; ROBUST SUPERHYDROPHOBICITY; NANOSTRUCTURED SURFACES; EASY-REPAIRABILITY; ICE ADHESION; NANOPARTICLES; COATINGS; FABRICATION; DURABILITY; DROPLET; FIBERS;

D O I：

10.1016/j.apsusc.2016.11.184

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Superhydrophobicity of polymers is easily destroyed by careless touching due to the softness of microstructures. In this study, based on a well-constructed polyvinylidene fluoride (PVDF) surface, a novel superhydrophobic PVDF/SiO2 composite film was fabricated by adding hydrophobic SiO2 nanopartide and solvent into a coagulation bath. The water contact angle of the composite film reached 162.3 and the sliding angle was as low as 1.5. More importantly, the composite film could be regenerated only through immersing the composite film in the designed regeneration agent. The composition of the designed regeneration agent ensured that SiO2 nanoparticles were firmly adhered on the film surface even under the ultrasonic cleaning. Hence, the superhydrophobicity and self-cleaing property could be regenerated and maintained effectively, and moreover, these propeties could resist a proper pressure. In addition, after many rubbing-regenerating cycles, the regeneration method was still valid. (C) 2016 Elsevier B.V. All rights reserved.

引用

页码：1443 / 1449

页数：7

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