Green and Rapid Synthesis of Durable and Super-Oil (under Water) and Water (in Air) Repellent Interfaces
journal contributionposted on 06.07.2018, 00:00 by Adil M. Rather, Uttam Manna
In this letter, a single polymer is rapidly and covalently transformed into a chemically reactive and functional bulk polymeric coatings through a catalyst-free mutual chemical reaction between acrylates and amine groups at ambient conditionin the absence of any external reaction solvent, which is unprecedented in the literature. This facile and green chemical approach provided a common basis for achieving two distinct biomimicked wettabilitiesthat are superhydrophobicity (lotus-leaf mimicked) in air and superoleophobicity (fish-scale inspired) under water. The essential chemistry that conferred bioinspired wettability was optimized in the hierarchically featured polymeric material by postcovalent modulation of chemically reactive polymeric material with primary-amine-containing small moleculess, glucamine and octadecylamine. The inherently sticky and “chemically reactive” polymeric material having appropriate hierarchical topography is highly capable of providing substrate-independent (irrespective of chemical compositions and mechanical strength of the substrates) stable coatings with robust bioinspired (i.e., lotus leaf and fish scale) wettability.