A Simple Nanocellulose Coating for Self-Cleaning upon Water Action: Molecular Design of Stable Surface Hydrophilicity,Angewandte Chemie International Edition

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A Simple Nanocellulose Coating for Self-Cleaning upon Water Action: Molecular Design of Stable Surface Hydrophilicity
Angewandte Chemie International Edition ( IF 16.1 ) Pub Date : 2017-06-28 06:42:12 , DOI: 10.1002/anie.201703913
Shu Huang ₁ , Dayang Wang _{1,

2}

Affiliation

Coating solid surfaces with cellulose nanofibril (CNF) monolayers via physical deposition was found to keep the surfaces free of a variety of oils, ranging from viscous engine oil to polar n-butanol, upon water action. The self-cleaning function was well correlated with the unique molecular structure of the CNF, in which abundant surface carboxyl and hydroxy groups are uniformly, densely, and symmetrically arranged to form a polar corona on a crystalline nanocellulose strand. This isotropic core–corona configuration offers new and easily adoptable guidance to design self-cleaning surfaces at the molecular level. Thanks to its excellent self-cleaning behavior, the CNF coating converted conventional meshes into highly effective membranes for oil–water separation with no prior surface treatment required.

中文翻译：

一种简单的纳米纤维素涂层，可在水作用下自清洁：稳定的表面亲水性的分子设计

发现通过物理沉积用纤维素纳米原纤维（CNF）单层涂覆固体表面可以使表面在水作用下保持无油状态，从粘性发动机油到极性正丁醇。自清洁功能与CNF的独特分子结构密切相关，在CNF中，大量的表面羧基和羟基均匀，密集和对称地排列，从而在晶体纳米纤维素链上形成极性电晕。各向同性的核-电晕结构为分子水平上的自清洁表面的设计提供了新的且易于采用的指导。由于其出色的自清洁性能，CNF涂层将常规筛网转变为高效的膜，用于油水分离，而无需事先进行表面处理。

更新日期：2017-06-29

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