控制聚二甲基硅氧烷包覆的二氧化硅杂化颗粒的超疏水性和疏油性,Langmuir

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控制聚二甲基硅氧烷包覆的二氧化硅杂化颗粒的超疏水性和疏油性
Langmuir ( IF 3.7 ) Pub Date : 2023-03-22 , DOI: 10.1021/acs.langmuir.3c00272
Chan Beom Park ₁ , Sang Hee Kim ₁ , Keumjung Lee ₁ , Jun Hyup Lee ₁

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用于多功能控制表面润湿性的分级功能性有机-无机杂化颗粒在从化妆品到防污光电设备的广泛应用中引起了广泛关注。在这项研究中，使用常用的二氧化硅颗粒和具有疏水链端的聚二甲基硅氧烷 (PDMS) 的协同组合，通过简单而系统的制造策略制备了超疏水和疏油有机-无机杂化颗粒。通过简单的物理分散和随后的热处理，将具有不同链长和化学结构的各种类型的 PDMS 表面接枝到二氧化硅微粒上，在无机二氧化硅和有机 PDMS 聚合物之间形成氢键或共价键，从而诱导核壳结构用于混合粒子，它赋予二氧化硅颗粒表面超疏水性和疏油性。由于粗糙的表面形态和疏水长链效应，制备的具有长 PDMS 链的 PDMS 包覆二氧化硅杂化颗粒的水接触角为 151.2°，油接触角为 15.2°。此外，所得有机-无机杂化颗粒在高达 420 °C 的温度下仍具有热稳定性。这种受控方法赋予有机-无机杂化颗粒超疏水和疏油表面，因此，这些颗粒被证明适用于防水应用。2° 由于粗糙的表面形态和疏水长链效应。此外，所得有机-无机杂化颗粒在高达 420 °C 的温度下仍具有热稳定性。这种受控方法赋予有机-无机杂化颗粒超疏水和疏油表面，因此，这些颗粒被证明适用于防水应用。2° 由于粗糙的表面形态和疏水长链效应。此外，所得有机-无机杂化颗粒在高达 420 °C 的温度下仍具有热稳定性。这种受控方法赋予有机-无机杂化颗粒超疏水和疏油表面，因此，这些颗粒被证明适用于防水应用。

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Controlling Superhydrophobicity and Oleophobicity of Polydimethylsiloxane-Coated Silica Hybrid Particles

Hierarchical functional organic–inorganic hybrid particles for versatile control of surface wettability have attracted much attention in a wide range of applications from makeup cosmetics to anti-smudging optoelectronic devices. In this study, superhydrophobic and oleophobic organic–inorganic hybrid particles were prepared by a simple and systematic fabrication strategy using the synergistic combination of commonly available silica particles and polydimethylsiloxanes (PDMSs) with hydrophobic chain ends. Various types of PDMSs with different chain lengths and chemical structures were surface-grafted to silica microparticles through facile physical dispersion and subsequent thermal treatment to form hydrogen bonds or covalent bonds between the inorganic silica and organic PDMS polymers and thus induce a core–shell structure for the hybrid particles, which imparts superhydrophobicity and oleophobicity to the surface of silica particles. The prepared PDMS-coated silica hybrid particles with long PDMS chains exhibited a water contact angle of 151.2° and an oil contact angle of 15.2° due to the rough surface morphology and hydrophobic long-chain effects. Furthermore, the resulting organic–inorganic hybrid particles were thermally stable up to 420 °C. This controlled approach endowed the organic–inorganic hybrid particles with both superhydrophobic and oleophobic surfaces and, therefore, these particles were proven to be suitable for waterproof applications.

更新日期：2023-03-22

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