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Synthesis and evaluation of hexafluoroisopropanol‐functionalized polysiloxane as a new coating material for sensors
Author(s) -
Wei Dongwei,
Wang Lishuo,
Ma Jinyi,
Jiang Hongmin
Publication year - 2011
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.35338
Subject(s) - siloxane , materials science , coating , polymer , glass transition , spin coating , surface modification , chemical engineering , polymer chemistry , composite material , engineering
A new polysiloxane polymer as a coating material for surface acoustic wave (SAW) sensors was synthesized. The polymer was a linear polysiloxane functionalized with hexafluoroisopropanol (HFIP) groups, poly{methyl [4‐(hexafluoroisopropanol) phenylethyl] siloxane}. The polymer was spin‐coated on a 200‐MHz SAW sensor for the detection of a 2,4‐dinitrotoluene vapor. A fast response time of 30 s and good reproducibility were achieved. It was found that the frequency shift decreased as the polymer concentrations decreased. The new polysiloxane coatings showed excellent properties, such as a high sensitivity, high permeability, and low glass‐transition temperature (−40.5 ± 1°C). © 2011 Wiley Periodicals, Inc. J Appl Polym Sci, 2012