使用可生物降解的木质素包覆纤维素纳米晶体颗粒简便制备坚固耐用的超疏水涂层
Facile Preparation of a Robust and Durable Superhydrophobic Coating Using Biodegradable Lignin-Coated Cellulose Nanocrystal Particles.
作者信息
Huang Jingda, Wang Siqun, Lyu Shaoyi
机构信息
Research Institute of Wood Industry, Chinese Academy of Forestry, Beijing 100091, China.
Center for Renewable Carbon, University of Tennessee, Knoxville, TN 37996, USA.
出版信息
Materials (Basel). 2017 Sep 14;10(9):1080. doi: 10.3390/ma10091080.
Abstract
It is a challenge for a superhydrophobic coating to overcome the poor robustness and the rough surface structure that is usually built using inorganic particles that are difficult to degrade. In this study, a robust superhydrophobic coating is facilely prepared by using commercial biodegradable lignin-coated cellulose nanocrystal (L-CNC) particles after hydrophobic modification to build rough surface structures, and by choosing two different adhesives (double-sided tape and quick-setting epoxy) to support adhesion between the L-CNC particles and the substrates. In addition to excellent self-cleaning and water repellence properties, the resulting coatings show outstanding mechanical strength and durability against sandpaper abrasion, finger-wipe, knife-scratch, water jet, UV radiation, high temperature, and acidic and alkali solutions, possessing a wide application prospect.
摘要
对于超疏水涂层而言，要克服其通常使用难以降解的无机颗粒构建的粗糙表面结构以及较差的坚固性是一项挑战。在本研究中，通过对商用可生物降解的木质素包覆纤维素纳米晶体（L-CNC）颗粒进行疏水改性以构建粗糙表面结构，并选择两种不同的粘合剂（双面胶带和速干环氧树脂）来支持L-CNC颗粒与基底之间的粘附，从而轻松制备出坚固的超疏水涂层。除了具有优异的自清洁和防水性能外，所得涂层还表现出出色的机械强度以及对砂纸磨损、手指擦拭、刀划、水射流、紫外线辐射、高温以及酸碱溶液的耐久性，具有广阔的应用前景。
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