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Fabricating Biocompatible Super Stable lubricant-immobilized Slippery Surfaces by Grafting Polydimethylsiloxane Brush: excellent boiling water resistance, hot liquids repellency and long-term slippery stability

Abstract

Slippery liquid-infused surfaces that imitate the microstructure of carnivorous nepenthes have aroused widespread attention due to their excellent liquid and various organic solutions repellency associated with broad applications in various fields. However, the complicated preparation processes and poor oil lock ability severely restrict the practical applications of Slippery liquid-infused surfaces. Herein, the lubricant-immobilized slippery surfaces (LISS) are fabricated by grafting polydimethylsiloxane onto ZnO nanorods under ultraviolet light and the residual non-bound silicone oil acts as lubricant. Meanwhile, the whole reaction is green and the chemicals involved are inexpensive and environmentally friendly. Moreover, by reason of the strong intermolecular forces between non-bond silicone oil and grafted polydimethylsiloxane, the silicone oil is firmly locked to the zinc oxide surface served as lubricant layer that sliding angle less than 3°. The LISS not only exhibit superior omniphobicity at room-temperature but also remain excellent sliding ability for high-temperature liquids such as hot water and oleic oil. Suffering boiling and high temperature test for 15 min, the liquids still slide on the surface with tilt angles below 4° because of the existence of uniform lubricant layer. In addition, under extreme operating conditions such as high shear rate up to 7000 rpm, long-term immersion for 400 h and strong acid/alkali, the LISS exhibit outstanding slippery stability. Furthermore, the properties of corrosion resistance, anti-icing and anti-fouling are of great significance for extending the practical application of LISS. Therefore, as a result of the excellent boiling water/hot liquids repellency and long-term slippery stability, the LISS may be promoted on a large scale and a breakthrough for traditional slippery surface preparation.

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Publication details

The article was received on 20 Feb 2019, accepted on 08 Apr 2019 and first published on 09 Apr 2019


Article type: Paper
DOI: 10.1039/C9NR01556F
Citation: Nanoscale, 2019, Accepted Manuscript

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    Fabricating Biocompatible Super Stable lubricant-immobilized Slippery Surfaces by Grafting Polydimethylsiloxane Brush: excellent boiling water resistance, hot liquids repellency and long-term slippery stability

    X. Jing and Z. Guo, Nanoscale, 2019, Accepted Manuscript , DOI: 10.1039/C9NR01556F

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