A bio-inspired surface treatment to make fabrics omniphobic is reported, exploiting the ability of dopamine - a widespread naturally occurring biological neurotransmitter - to give substrate adhesion and surface immobilization. Standard polyester and polyacrylonitrile fabrics, which are intrinsically rather hydrophilic, are first dip-coated in an aqueous solution of dopamine and then treated with a fluorocarbon-based solution. After the treatment, fabrics show a strong omniphobic behavior, while remaining quite permeable to water vapor. The efficiency of the proposed biomimetic treatment is investigated by Optical Contact Angle, Environmental Scanning Electron Microscopy (ESEM), and X-ray Photoelectron Spectroscopy (XPS). Moreover, the mechanical durability of the surface treatment is tested through Martindale abrasion resistance measurements.
A biomimetic surface treatment to obtain durable omniphobic textiles / C. De Marco, V. Oldani, C.L. Bianchi, M. Levi, S. Turri. - In: JOURNAL OF APPLIED POLYMER SCIENCE. - ISSN 0021-8995. - 132:32(2015), pp. 42404.1-42404.8. [10.1002/app.42404]
A biomimetic surface treatment to obtain durable omniphobic textiles
V. OldaniSecondo
;C.L. Bianchi;
2015
Abstract
A bio-inspired surface treatment to make fabrics omniphobic is reported, exploiting the ability of dopamine - a widespread naturally occurring biological neurotransmitter - to give substrate adhesion and surface immobilization. Standard polyester and polyacrylonitrile fabrics, which are intrinsically rather hydrophilic, are first dip-coated in an aqueous solution of dopamine and then treated with a fluorocarbon-based solution. After the treatment, fabrics show a strong omniphobic behavior, while remaining quite permeable to water vapor. The efficiency of the proposed biomimetic treatment is investigated by Optical Contact Angle, Environmental Scanning Electron Microscopy (ESEM), and X-ray Photoelectron Spectroscopy (XPS). Moreover, the mechanical durability of the surface treatment is tested through Martindale abrasion resistance measurements.File | Dimensione | Formato | |
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