One-Step Synthesis of a Durable and Liquid-Repellent Poly(dimethylsiloxane) Coating

Overview

Journal Adv Mater

Date 2021 May 6

PMID 33955585

Citations 19

Authors

Jie Liu

Yuling Sun

Xiaoteng Zhou

Xiaomei Li

Michael Kappl

Werner Steffen

Hans-Jurgen Butt

Affiliations

Soon will be listed here.

Abstract

Coatings with low sliding angles for liquid drops have a broad range of applications. However, it remains a challenge to have a fast, easy, and universal preparation method for coatings that are long-term stable, robust, and environmentally friendly. Here, a one-step grafting-from approach is reported for poly(dimethylsiloxane) (PDMS) brushes on surfaces through spontaneous polymerization of dichlorodimethylsilane fulfilling all these requirements. Drops of a variety of liquids slide off at tilt angles below 5°. This non-stick coating with autophobicity can reduce the waste of water and solvents in cleaning. The strong covalent attachment of the PDMS brush to the substrate makes them mechanically robust and UV-tolerant. Their resistance to high temperatures and to droplet sliding erosion, combined with the low film thickness (≈8 nm) makes them ideal candidates to solve the long-term degradation issues of coatings for heat-transfer surfaces.

Citing Articles

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