Ionic liquids as green reaction media for synthesis of poly(aryl ether ketone)s

Abstract

Poly(aryl ether ketone)s (PAEKs) were successfully synthesized via nucleophilic aromatic substitution (S N AR) mechanism, using ionic liquids as green reaction media. The influence of various reaction parameters including monomer concentration, dehydration time, polymerization temperature and duration, IL's cations and anions nature, upon PAEKs molecular weight was investigated. In addition, the peculiarities of hydrogen-bonding ability of ILs were investigated. The interaction of 2,2-bis(4-hydroxyphenyl) propane (bisphenol A) with ILs has a strong influence on PAEKs synthesis. Various moderate molecular weight PAEKs have been obtained in high yields with molecular weights ranging from 10000 to 18000 g mol 1 .high performance polymers, ionic liquids, poly(aryl ether ketone)s, polycondensation Citation:Wang J, Liu Z P. Ionic liquids as green reaction media for synthesis of poly(aryl ether ketone)s.

The synthesis of poly(phenylene sulfide sulfone) in ionic liquids at atmospheric pressure

“…17 High performance polymers polysulfone (PSF), poly(ether sulfone) (PES) and poly(aryl-ether-ketone) (PAEK) with high molecular weights and yields were presented by using IL/ZI as reaction media. [18][19][20] Brønsted acidic ionic liquids (BAILs) as both solvents and catalysts and Tf 2 N-anionic ionic liquids as solvents were applied for polycondensation of L-lactic acid and 3-caprolactone. 21 Herein we report a novel synthetic approach for PPSS with IL/ ZI as reaction media by aromatic nucleophilic substitution polymerization.…”

Effect of water and methanol on the dissolution and gelatinization of corn starch in [MMIM][(MeO)HPO2]

“…Ionic liquid has been used to replace a wide range of common organic solvent due to its high thermal stability, negligible vapor pressure and wide electrochemical window. [19][20][21][22][23] What's more, ionic liquid has also been utilized as media for starch dissolution, 24 since the anions and cations of the solvent can form hydrogen-bonding with hydroxyl groups of starch and effectively break the hydrogen-bonding network of starch, whose mechanism is the same as that of cellulose. Methanol is expected to stimulate a fast permeation to the non-crystalline area of starch and has better solubility for some organic compounds such as lipids in starch granule than water.…”

Progress in Ionic Liquids as Reaction Media, Monomers and Additives in High-Performance Polymers

“…In 2002, high-molecular-weight aromatic PIs and polyamides were synthesised for the first time, obtaining polymers with inherent viscosities from 0.52 to 1.35 dL/g in ILs 1,3-dialkylimidazolium bromides [10]. The use of ILs as novel solvents for the synthesis of other HPPs has been reported, such as PAEK [3,11] and PSF [12,13].…”