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Kinetics of diffusion of water and dimethylmethylphosphonate through poly(dimethylsiloxane) membrane using coated quartz piezoelectric sensor
Author(s) -
Banerjee Susanta,
Asrey Ram,
Saxena Chhaya,
Vyas Krishnadutt,
Bhattacharya Arabinda
Publication year - 1997
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/(sici)1097-4628(19970829)65:9<1789::aid-app15>3.0.co;2-i
Subject(s) - membrane , permeation , diffusion , materials science , chemical engineering , analytical chemistry (journal) , kinetics , quartz , polymer chemistry , chemistry , composite material , thermodynamics , chromatography , biochemistry , physics , engineering , quantum mechanics
The mass sensing principle of quartz crystal has successfully been employed to study the diffusion of dimethylmethylphosphonate (DMMP) and water through a poly(dimethylsiloxane) (PDMS) membrane. For this study a new permeation cell has been fabricated which houses a Cu(II) butyrate ethylenediamine‐coated quartz crystal sensor. This development was motivated by the desire to measure the diffusion coefficients rapidly, precisely, and at different temperatures. Temperature dependence diffusion coefficients of DMMP and water are also evaluated using the same cell, which enables calculation of the activation energies for the diffusion process. From the diffusion and solubility data permeability coefficients of DMMP and water have been calculated. It is observed that PDMS membrane offers a selectivity for DMMP over water roughly by 13 : 1 (i.e., P DMMP / P water > 13). © 1997 John Wiley & Sons, Inc. J Appl Polym Sci 65:1789–1794, 1997