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Fluorine‐Free Anti‐Smudge Polyurethane Coatings
Author(s) -
Rabnawaz Muhammad,
Liu Guojun,
Hu Heng
Publication year - 2015
Publication title -
angewandte chemie
Language(s) - English
Resource type - Journals
eISSN - 1521-3757
pISSN - 0044-8249
DOI - 10.1002/ange.201504892
Subject(s) - polyurethane , fluorine , materials science , surface tension , reagent , chemical engineering , polymer science , composite material , chemistry , organic chemistry , metallurgy , physics , quantum mechanics , engineering
Conventionally, low‐surface‐tension fluorinated reagents are incorporated into anti‐smudge (oil‐ and water‐repellent) coatings for oil repellency. However, fluorinated compounds are expensive and an environmental concern because of their high stability and bioaccumulation. These factors limit their widespread application. We report herein the development of fluorine‐free anti‐smudge polyurethane coatings that are clear at thicknesses up to tens of micrometers and are able to sustain extensive surface damage. We demonstrate that these coatings can be applied readily onto a diverse range of substrates.