Biomimetic Artificial PVDF Film Reproduce the Superhydrophobic Property of a Lotus Leaf
Lotus flower is a symbol of purity in Asian cultures, when growing from muddy waters it stays clean and uncontaminated. The self-cleaning surface of lotus leaf is hydrophobic and rough, showing hierarchical micro- and nano-scale structures. Stimulated by “lotus effect, the microreliefs of lotus leaf was mimicked using PVDF film and the nano-scale protrusions on the top of the microreliefs were implemented by the mixed solution of dimethyldichlorosilane (DDS) and methyltrichlorosilane (MTS). A lotus-leaf-like surface of the PVDF film was clearly observed by SEM. Elemental composition analysis by XPS revealed that the nanostructure materials of PVDF film were polymethylsiloxane and polydimethylsiloxane. The superhydrophobic property of the mimicked self-cleaning surface was validated by the water contact angle and sliding angle on the lotus-leaf-like PVDF film, which are 155°and 4°, respectively. In this case, water drops can easily move across the PVDF film surface, carrying dirt particles away, leaving no contamination.
lotus effect self-cleaning superhydrophobic property chemical bath deposition
ZHENG Zhen-rong GU Zhen-ya HUO Rui-ting XIE Mian-gui
School of Textiles, Tianjin Polytechnic University, Tianjin, 300160, China
国际会议
青岛
英文
723-726
2009-10-09（万方平台首次上网日期，不代表论文的发表时间）