Non-fluorinated Omniphobic Paper with Ultra-low Contact Angle Hysteresis

ACS Applied Materials & Interfaces
Xiaoxiao ZhaoKevin Golovin

Abstract

Existing methods for fabricating oil-repellent paper rely on highly fluorinated and therefore toxic chemicals. Non-fluorinated omniphobic paper with low contact angle hysteresis (CAH) has not been demonstrated. We report a facile method to prepare omniphobic paper through the vapor-phase deposition of chlorosilane molecules to create 'liquid-like' polymer brushes on commercially available release liners. Compared to polymer brushes grafted from solution, this solvent-free method avoids physical deformation of the paper, such as curling or wrinkling. The obtained paper displayed low CAH (< 6°) and roll-off angles for liquids exhibiting a broad range of surface tension, from 72.8 to 22.4 mN m-1. A hexadecane droplet (15 μL, 27.5 mN m-1) slid off the paper at a tilt angle less than 4°. The effect of surface roughness, composition, and the presence of particle additives on the wetting properties was investigated. The utility of the omniphobic paper was demonstrated in microfluidic, oil funnel, microtiter plate, and food packaging container applications.

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Citations

Mar 24, 2021·ACS Applied Materials & Interfaces·Chengcheng ZhangZhan Chen
May 7, 2021·Advanced Materials·Jie LiuHans-Jürgen Butt
Jun 15, 2021·ACS Applied Materials & Interfaces·Chihiro UrataAtsushi Hozumi
Nov 19, 2020·Langmuir : the ACS Journal of Surfaces and Colloids·Md Arifur Rahman Khandoker, Kevin Golovin
Sep 4, 2021·Langmuir : the ACS Journal of Surfaces and Colloids·Satoshi NakamuraAtsushi Hozumi
Oct 29, 2021·ACS Applied Materials & Interfaces·Alex Kate HalveyAnish Tuteja

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