期刊
PLASMA PROCESSES AND POLYMERS
卷 8, 期 4, 页码 305-315出版社
WILEY-BLACKWELL
DOI: 10.1002/ppap.201000069
关键词
fluorosiloxane; mechanical durability; nanoindentation; nano scratch; oleophilic; superhydrophobic
资金
- Science Foundation Ireland [08/SRC11411]
Surfaces with water contact angles above 150 degrees are regarded as superhydrophobic. In this study the use of atmospheric pressure plasma jet system called Plasmastream (TM) to deposit superhydrophobic coatings is investigated. The coatings were deposited from the following liquid precursors: hexamethyldisiloxane (HMDSO), tetramethyl cyclotetrasiloxane (Tomcats) and a mixture of Tomcats and fluorosiloxane. The objective of the study is to investigate how precursor type and deposition conditions, influences the morphology and mechanical performance of the deposited superhydrophobic coatings. Optical profilometry, AFM, SEM, Ellipsometry, XPS, Water contact angle and FTIR techniques were used to evaluate the surface roughness, morphology, thickness and chemical functionality of the deposited coatings. The mechanical properties were evaluated using the Nano Tribometer, Nano Scratch, Ultra Nanoindentation and ultrasonic abrasion tests. Superhydrophobic coatings deposited from a precursor mixture of Tomcats and fluorosiloxane yielded a substantial enhancement in coating adhesion and mechanical durability compared to the superhydrophobic coatings obtained with either Tomcats or HMDSO precursors alone.
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