Preparation and Performance of Lignin-Based Multifunctional Superhydrophobic Coating.
Preparation and Performance of Lignin-Based Multifunctional Superhydrophobic Coating.
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木质素基多功能超疏水涂层的制备及性能
DOI：
10.3390/molecules27041440
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发表时间：
2022-02-21
期刊：
影响因子：
--
通讯作者：
Kong F
中科院分区：
文献类型：
--
作者：
Liu X;Gao C;Fu C;Xi Y;Fatehi P;Zhao JR;Wang S;Gibril ME;Kong F
近年来，超疏水涂层因其广泛的潜在应用而备受关注。然而，寻找一种简单且具有成本效益的方法来利用天然聚合物制备超疏水材料和涂层存在挑战。在此，我们通过1H, 1H, 2H, 2H - 全氟癸基 - 三乙氧基硅烷（PFDTES）取代反应对硫酸盐木质素进行改性，制备了一种基于硫酸盐木质素的超疏水粉末，并通过将悬浮的PFDTES - 木质素粉末直接喷涂在不同的基底上，包括玻璃、木材、金属和纸张，构建了超疏水涂层。所制备的基于木质素的涂层对水具有优异的排斥性，水接触角为164.7°，还具有良好的耐磨性、耐酸性、耐碱性、耐盐性以及相当好的自清洁性能。经过30次砂纸摩擦循环，或在2 mol/L盐酸、0.25 mol/L氢氧化钠和2 mol/L氯化钠溶液中浸泡30分钟后，涂层仍保持超疏水性能，接触角高于150°。PFDTES - 木质素涂层的超疏水性能主要归因于构建的高表面粗糙度以及改性木质素所提供的低表面能。这种基于木质素的聚合物涂层成本低、可扩展，在不同领域具有巨大的潜在应用，为硫酸盐木质素的增值利用提供了一种简单的方法。
Superhydrophobic coatings have drawn much attention in recent years for their widespread potential applications. However, there are challenges to find a simple and cost-effective approach to prepare superhydrophobic materials and coatings using natural polymer. Herein, we prepared a kraft lignin-based superhydrophobic powder via modifying kraft lignin through 1H, 1H, 2H, 2H-perfluorodecyl-triethoxysilane (PFDTES) substitution reaction, and constructed superhydrophobic coatings by direct spraying the suspended PFDTES-Lignin powder on different substrates, including glass, wood, metal and paper. The prepared lignin-based coatings have excellent repellency to water, with a water contact angle of 164.7°, as well as good friction resistance, acid resistance, alkali resistance, salt resistance properties and quite good self-cleaning performance. After 30 cycles of sand friction or being stayed in 2 mol/L HCl, 0.25 mol/L NaOH and 2 mol/L NaCl solution for 30 min, the coatings still retain super hydrophobic capability, with contact angles higher than 150°. The superhydrophobic performance of PFDTES-Lignin coatings is mainly attributed to the constructed high surface roughness and the low surface energy afforded by modified lignin. This lignin-based polymer coating is low-cost, scalable, and has huge potential application in different fields, providing a simple way for the value-added utilization of kraft lignin.
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影响因子：
9.5
作者：
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