TY - JOUR
T1 - Reentrant-Convex Swelling of Thermoresponsive Gels in Mixtures of Solvents
AU - Drozdov, Aleksey D.
AU - Christiansen, Jesper de Claville
PY - 2022/6/30
Y1 - 2022/6/30
N2 - Design of organohydrogels with exceptional physical properties requires simple and reliable models for swelling of polymer networks in mixtures of water with organic solvents. A model is developed for equilibrium solvent uptake by thermoresponsive gels in binary mixtures that involves a relatively small number of adjustable parameters and describes various types of swelling diagrams (monotonically decreasing, with points of minimum, and with several maxima and minima) in a unified manner. Its ability to describe (and to predict qualitatively) equilibrium swelling curves is confirmed by fitting experimental data on poly(N-isopropylacrylamide), poly(N,N-dimethylacrylamide), poly(acryloyl-L-proline methyl ester), and poly(acrylamide) gels in mixtures of water with acetone, acetonitrile, dioxane, dimethyl sulfoxide, ethanol, methanol, N-methylpyrrolidone, 1-propanol, and tetrahydrofuran.
AB - Design of organohydrogels with exceptional physical properties requires simple and reliable models for swelling of polymer networks in mixtures of water with organic solvents. A model is developed for equilibrium solvent uptake by thermoresponsive gels in binary mixtures that involves a relatively small number of adjustable parameters and describes various types of swelling diagrams (monotonically decreasing, with points of minimum, and with several maxima and minima) in a unified manner. Its ability to describe (and to predict qualitatively) equilibrium swelling curves is confirmed by fitting experimental data on poly(N-isopropylacrylamide), poly(N,N-dimethylacrylamide), poly(acryloyl-L-proline methyl ester), and poly(acrylamide) gels in mixtures of water with acetone, acetonitrile, dioxane, dimethyl sulfoxide, ethanol, methanol, N-methylpyrrolidone, 1-propanol, and tetrahydrofuran.
UR - http://www.scopus.com/inward/record.url?scp=85134850056&partnerID=8YFLogxK
U2 - 10.1021/acs.iecr.2c01182
DO - 10.1021/acs.iecr.2c01182
M3 - Journal article
SN - 0888-5885
VL - 61
SP - 9725
EP - 9734
JO - Industrial & Engineering Chemistry Research
JF - Industrial & Engineering Chemistry Research
IS - 27
ER -