离子液体中AM/AMPS/N8AM三元共聚物的合成及溶液性能

以丙烯酰胺(AM)和2-丙烯酰胺基-2-甲基丙磺酸(AMPS)为亲水单体, 以N-辛基丙烯酰胺(N8AM)为疏水单体, 在离子液体bmim]BF4中实现了疏水缔合丙烯酰胺三元共聚物的合成.

Synthesis of AM/AMPS/N8AM Tercopolymer in Ionic Liquids and Performance of the Polymer Solution

The tercopolymer AM-AMPS-N8AM was prepared through radical polymerization with 1-butyl-3-methyl imidazolium tetrafluoroborate ionic liquids as the reaction medium of polymerization, benzoperoxide/N,N-dimethylaniline(BPO/DMA) redox system as the initiator, acrylamide(AM) and 2-acrylamido-2-methylpropane sulfonic acid(AMPS) as the hydrophilic monomer, N-octylacrylamide(N8AM) as the hydraphobic monomer. The structure of polymer was identified by 1H NMR, 13C NMR and element analysis. The apparent viscosity of the terpolymer aqueous solution is measured, and the result shows that the terpolymer synthesized in ionic liquids has an excellent tackifying ability.When the mass concentration of solution is 1.2 g/L, the apparent viscosity can reach 220.1 mPa·s, when the temperature changes from 45 ℃ to 90 ℃, the viscosity remaining rate is 65% and when the shear rate increases to 24.48 s-1, the viscosity remaining rate is 43.5%. It is shown that the tercopolymer solution has better temperature tolerance and shearing resistance