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Synthesis and evaluation of hexafluorodimethylcarbinol functionalized polymers as microsensor coatings
Author(s) -
Snow A. W.,
Sprague L. G.,
Soulen R. L.,
Grate J. W.,
Wohltjen H.
Publication year - 1991
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.1991.070430909
Subject(s) - dimethyl methylphosphonate , polymer , surface modification , polystyrene , materials science , polymer chemistry , monomer , polymerization , acylation , absorption (acoustics) , copolymer , chemical engineering , organic chemistry , chemistry , catalysis , composite material , engineering
Polystyrenes, polyacrylates, and poly(3,4‐isoprenes) incorporating the hexafluorodimethylcarbinol functionality have been synthesized, characterized, and tested as microsensor coatings on a surface acoustic wave (SAW) device for dimethyl methylphosphonate (DMMP) vapor absorption sensitivity. The syntheses involved monomer functionalization and polymerization or hexafluoroacetone reaction with preformed polymer. All fluoroalcohol functionalized polymer coatings displayed sub parts per million level sensitivity with the slope of the absorption isotherm steepest at low DMMP concentrations. The order of sensitivity for the isomeric polystyrene fluoroalcohols ( meta > para ≫ ortho ) paralleled that of the relative free hydroxyl to hydrogen‐bonded hydroxyl content. Strong hydrogen bonding between the fluoroalcohol polymers and DMMP vapor was observed by IR spectroscopy. Acylation of the fluoroalcohol group markedly reduced the DMMP sensitivity.