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Polymer sorbents for phosphorus esters: I. Selection of polymers by analog calorimetry
Author(s) -
Chang Y.,
Noriyan J.,
Lloyd D. R.,
Barlow J. W.
Publication year - 1987
Publication title -
polymer engineering and science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.503
H-Index - 111
eISSN - 1548-2634
pISSN - 0032-3888
DOI - 10.1002/pen.760271002
Subject(s) - phosphonate , sorption , solvent , polymer , polystyrene , materials science , phenol , dimethyl methylphosphonate , styrene , vinyl acetate , polymer chemistry , organic chemistry , chemistry , copolymer , composite material , adsorption
Heats of mixing of a variety of solvents with dimethyl methyl phosphonate, DMMP, are presented. A qualitative correlation between the exothermicity of the heat of mixing of DMMP with a particular solvent and sorption of DMMP by polymers containing structural units analogous to the solvent is observed. By this approach, polymers containing acidic hydroxyl functionality, such as phenol‐formaldehyde condensation products and poly(styrene‐co‐vinyl benzyl hexafluorodimethyl carbinol), were identified as good sorbents for DMMP. Sorption isotherms, measured for these materials by the piezoelectric method, show enhanced sorption at low vapor activity and 135°C compared to polystyrene and poly(vinyl chloride) which lack these acidic sites and whose solvent analogs mix more endothermically with DMMP.