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Sorption and diffusion of aldehydes and ketones through castor oil‐based interpenetrating polymer networks of PU–PS
Author(s) -
Mallu P.
Publication year - 1998
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(19980321)67:12<2047::aid-app10>3.0.co;2-z
Subject(s) - sorption , enthalpy , polystyrene , diffusion , polymer , polymer chemistry , polyurethane , arrhenius equation , thermodynamics , materials science , solvent , activation energy , castor oil , chemical engineering , chemistry , organic chemistry , physics , adsorption , engineering
Sorption and diffusion of some aldehydes and ketones into interpenetrating polymer networks (IPNs) of polyurethane–polystyrene (PU–PS) have been investigated in the temperature interval of 25–60°C. Transport data were found to be affected by the nature of the interacting solvent molecule rather than its size. The diffusion coefficient of ketones range from 9.2 × 10 −8 to 645 × 10 −8 cm 2 /s and for aldehyde from 11.5 × 10 −8 to 154.5 × 10 −8 cm 2 /s. For all solvents, the polymer remained intact. From the temperature dependence of sorption data, the Arrhenius activation parameter and the thermodynamic parameter, such as entropy and enthalpy for the process of equilibrium sorption, have been estimated. © 1998 John Wiley & Sons, Inc. J Appl Polym Sci 67:2047–2055, 1998