Preparation of Hierarchically Structured Polystyrene Surfaces with Superhydrophobic Properties by Plasma-Assisted Fluorination

Abstract

The nanotexturing of microstructured polystyrene surfaces through CF4 plasma chemical fluorination is presented in this study. It is demonstrated that the parameters of a surface micropore-generation process, together with the setup of subsequent plasma-chemical modifications, allows for the creation of a long-term (weeks) surface-stable micro- and nanotexture with high hydrophobicity (water contact angle >150°). Surface micropores were generated initially via the time-sequenced dosing of mixed solvents onto a polystyrene surface (Petri dish) in a spin-coater. In the second step, tetrafluoromethane (CF4) plasma fluorination was used for the generation of a specific surface nanotexture and the modulation of the surface chemical composition. Experimental results of microscopic, goniometric, and spectroscopic measurements have shown that a single combination of phase separation methods and plasma processes enables the facile preparation of a wide spectrum of hierarchically structured surfaces differing in their wetting properties and application potentials.

Hierarchically Structured Polystyrene-Based Surfaces Amplifying Fluorescence Signals: Cytocompatibility with Human Induced Pluripotent Stem Cell

“…Surface modification: All surfaces were modified by deposition of solvent mixtures using a homemade spin coater [ 23 ]. Adjustable parameters include the dosed volume, the number of doses, the delay between each dose, the speed of rotation, and the time of rotation of the sample after the last dose.…”

Robust Super-Hydrophobic Coating Prepared by Electrochemical Surface Engineering for Corrosion Protection

“…Among these methods, coating is a simple and effective way for corrosion protection with low cost. In the past several years, various coating techniques have been studied-like chemical vapor deposition (CVD) [4], plasma treatment [5][6][7][8], thermal spray [9], electrochemical methods [10][11][12][13][14][15][16][17][18], sol-gel [19,20], magnetron sputtering [21][22][23], etc. The above-mentioned methods mostly involve post-treatment or high temperatures in the fabrication process, which can damage the coating and/or substrate with relatively low melting points [24].…”

Facile Approach to Develop Hierarchical Roughness fiber@SiO2 Blocks for Superhydrophobic Paper

“…With the development of interfacial chemistry, materials with superwetting properties have attracted wide attention from both academia and industry due to their potential applications in antibacterial property [6,7], self-cleaning [8,9,10], printing and reprography [11,12,13,14], separation of liquids [15,16,17], etc. It is well known that certain surface roughness and low surface energy material modification are two key elements for constructing superhydrophobic interface [18,19,20,21,22,23,24,25]. Methods have been developed to build superhydrophobic papers [26,27,28,29,30,31,32,33,34,35], which could be basically categorized as chemical deposition, colloidal assemblies, layer by layer deposition, etc.…”