Abstract
Multifuntional fabrics with special wettability have attracted a lot of interest in both fundamental research and industry applications over the last two decades. In this review, recent progress of various kinds of approaches and strategies to construct super-antiwetting coating on cellulose-based substrates (fabrics and paper) has been discussed in detail. We focus on the significant applications related to artificial superhydrophobic fabrics with special wettability and controllable adhesion, e.g., oil-water separation, self-cleaning, asymmetric/anisotropic wetting for microfluidic manipulation, air/liquid directional gating, and micro-template for patterning. In addition to the anti-wetting properties and promising applications, particular attention is paid to coating durability and other incorporated functionalities, e.g., air permeability, UV-shielding, photocatalytic self-cleaning, self-healing and patterned antiwetting properties. Finally, the existing difficulties and future prospects of this traditional and developing field are briefly proposed and discussed.
Highlights
The wettability of a surface can be characterized by the contact angle (CA).Multifuntional surfaces with special wettability have attracted a lot of interest in both fundamental research and industry applications over the last two decades [1,2,3,4,5,6,7,8,9,10,11,12,13,14,15]
This article reviews recent advances involving surface engineering of physical structure and chemical component on cellulose-based substrates, especially for fabric and Surface engineering of cellulose-based substrates with desired functionalities can be achieved by a considerable number of physical and chemical techniques ranging from traditional treatments to multifunctional approaches
The results demonstrated that cross-linking in acidic investigated cotton fabric treated with different amount of nano TiO2 and SrTiO3 at different pH values pH improves the grafting of nano materials and ratio of 0.2% (SrTiO3)/0.3% (TiO2) has the best effect for self-cleaning purpose
Summary
The wettability of a surface can be characterized by the contact angle (CA). The rainwater can smoothly roll off the lotus leavesof instead of sticking to the surface These characteristics are attributed to the combination of a waxy layer with low surface energy and dual-scale special characteristics are attributed to the combination of a waxy layer with low surface energy and rough structured surface with protrusions on lotus leaves. This article reviews recent advances involving surface engineering of physical structure and chemical component on cellulose-based substrates, especially for fabric and Surface engineering of cellulose-based substrates with desired functionalities can be achieved by a considerable number of physical and chemical techniques ranging from traditional treatments to multifunctional approaches. The authors will present how the controlled wettability is integrated into traditional cellulose-based materials to improve their super-antiwetting performances and to extend their practical applications by developing new functionalities (oil-water separation, self-cleaning and asymmetric/anisotropic wetting). The authors give a brief summary and outlook on the fabrication and applications of superhydrophobic cellulose-based surfaces and the emerging development of innovative production techniques used to modify the surface materials and to improve the product quality
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