NDLI: Preparation and Performance of Lignin-Based Multifunctional Superhydrophobic Coating

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Preparation and Performance of Lignin-Based Multifunctional Superhydrophobic Coating

Content Provider	MDPI
Author	Liu, Xue Gao, Chao Fu, Chenglong Xi, Yuebin Fatehi, Pedram Zhao, Joe R. Wang, Shoujuan Gibril, Magdi E. Kong, Fangong
Copyright Year	2022
Description	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.
Starting Page	1440
e-ISSN	14203049
DOI	10.3390/molecules27041440
Journal	Molecules
Issue Number	4
Volume Number	27
Language	English
Publisher	MDPI
Publisher Date	2022-02-21
Access Restriction	Open
Subject Keyword	Molecules Environmental Engineering Superhydrophobic Lignin Particles Mechanical Durability Chemical Stability Self-cleaning
Content Type	Text
Resource Type	Article

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