Contact
    Start Publications Silicone Oil Swelling Slippery Surfaces Based on ...
    ←  Publication Finder
    Attension

    Silicone Oil Swelling Slippery Surfaces Based on Mussel-Inspired Magnetic Nanoparticles with Multiple Self-Healing Mechanisms

    Year: 2017

    Journal: Langmuir, Volume 33, OCT 3, page 10340–10350

    Authors: Jin, Biyu; Liu, Mingzhu; Zhang, Qinghua; Zhan, Xiaoli; Chen, Fengqiu

    Organizations: National Natural Science Foundation of China [21476195, 21576236, 21676248]; Zhejiang Provincial Major Project of Science Technology [2014C13SAA10006]

    In this work, a novel substrate building block, magnetic Fe3O4 nanoparticles armed with dopamine molecules were developed via mussel-inspired metal-coordination bonds. Combined with glycidyl methacrylate, polydimethylsiloxane propyl ether methacrylate, and diethylenetriamine, the original silicone oil swelling slippery liquid-infused porous surfaces (SLIPS) were first prepared by reversible coordinate bonds and strong covalent bonds cross-linking process. The matrix mechanical characteristics and surface physicochemical properties were systematically investigated. Results showed that the mechanical property of copolymer matrix and surface wettability of SLIPS can be remarkably recovered, which were due to the synergistic interactions of magnetic nanoparticles intrinsic photothermal effect, reversible Fe-catechol coordination, and diffused lubricating liquid. After irradiating with sunlamp for 2 h and sequentially healing for 10 h under ambient conditions, the crack almost disappeared under optical microscopy with 78.25% healing efficiency (HEf) of toughness, and surface slippery was completely retrieved to water droplets. The efficient self-heal of copolymer matrix (66.5% HEf after eighth cuttinghealing cycle) and recovering of slipperiness (SA < 5 degrees and 5 degrees< SA < 17 degrees after fourth and eighth cuttingcentrifuginghealing cycles, respectively) would extend longevity of SLIPS when subjected to multiple damages. Moreover, the prepared SLIPS displayed superb self-cleaning and liquid-repellent properties to a wide range of particulate contaminants and fluids.
    View publication