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Session #
SOLVENT REVERSIBLE PORATION IN IONIC LIQUID COPOLYMERS
Feng Yan and John Texter, School of Engineering Technology, Eastern
Michigan University, Ypsilanti, MI 48197, USA; jtexter@emich.edu
#
Microemulsions comprising methyl methacrylate (MMA) and a polymerizable ionic
liquid (IL)-based surfactant, 1-(2-acryloyloxyundecyl)-3-methylimidazolium
tetrafluoroborate (IL-BF4) water and cosurfactant,1-propanol, have been polymerized via
thermal initiation in microemulsions. The resulting polymer hydrogels can be
transformed to porous polymers by anion exchange of BF4¯ by PF6¯ in the IL moiety.
The pore size of the polymer varies with crosslinker content in the precursor
microemulsions. The converted porous polymers can be transformed to solvogels by
imbibing solvents such as dimethyl sulfoxide (DMSO), dimethyl formamide (DMF) and
alcohols. These polymer solvogels can be reversibly transformed to porous polymers
again by treatment with water. The basis for this reversible poration process appears due
to spinodal decomposition of the solvogel composition into the open cell nanoporous
material, induced by addition of a poor solvent (e.g., water) for the ionic liquid surfactant
blocks of the copolymer.
John Texter
School of Engineering Technology
118 Sill Hall
Eastern Michigan University
Ypsilanti, MI 48197
USA
jtexter@emich.edu
1-734-487-4587
1-734-483-0085
“Poster”