Weng Ting-ting, Guo Jian-wei, Li Xin-ming, et al. Synthesis of Polymerizable Ionic Liquid AMPS-TEA and Super Absorbency of Its Crosslinked Copolymer for Organic Liquids[J]. 2013, 30(4): 33-38.
Weng Ting-ting, Guo Jian-wei, Li Xin-ming, et al. Synthesis of Polymerizable Ionic Liquid AMPS-TEA and Super Absorbency of Its Crosslinked Copolymer for Organic Liquids[J]. 2013, 30(4): 33-38.DOI: 10.3969/j.issn.1007-7162.2013.04.005.
AMPS-TEA polymerizable ionic liquid was synthesized by neutralization of 2-acrylamido-2-methylpropane sulfonic acid (AMPS) with triethylamine (TEA) in acetone followed by evaporation of the solvent; DSC
FT-IR and
1
H-NMR were used to characterize the ionic liquid; by using N
N′-methylenebisacrylamide (NMBA) as a crosslinker
and ammonium persulfate (APS) as an initiator
poly(AMPS-TEA-co-AAm) gels were synthesized by aqueous copolymerization of AMPS-TEA and acrylamide (AAm)
the super absorbency for water and a variety of organic solvents of the gels was investigated as well. The results show that when the glass transition te
mperature of AMPS-TEA is-59.4 ℃
poly(AMPS-TEA-co-AAm) gels show super absorbency for both water (218 g/g) and a variety of organic solvents such as DMSO (68 g/g)
methanol
ethanol
and so on. It is suggested that the reason for super absorbency for organic liquids is dissociation of the ion pair of the ionic liquid irrespective of the liquid environment.