Direct Polyamidation in Molten Tetrabutylammonium bromide: Novel and Efficient Green Media

Mallakpour, Shadpour; Yousefian, Hamed

doi:10.1007/s00289-007-0855-9

Cited by 18 publications

(6 citation statements)

References 14 publications

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“…Although tetra-n-butylammonium bromide (TBAB) is classified as an electrolyte, it shows weakly surface activity in aqueous solution [3,4]. TBAB is one of the widely used phase transfer catalysts in various organic transformations [5,6]. Various properties of this salt like density [7], gas solubility [8], viscosity [9] and interfacial tension [3,4] have been reported.…”

Section: Introductionmentioning

confidence: 99%

Surface tension between CO 2 gas and tetra- n -butylammonium bromide aqueous solution

Akiba

Ohmura

2016

The Journal of Chemical Thermodynamics

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Section: Introductionmentioning

confidence: 99%

Surface tension between CO 2 gas and tetra- n -butylammonium bromide aqueous solution

Akiba

Ohmura

2016

The Journal of Chemical Thermodynamics

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“…In an analogous way, the use of IL in a closely similar reactions, which is the preparation of polyamides, was shown by Mallakpour and Yousefian 78 who reported the first application of molten ionic liquid (MIL) for the synthesis of polyamides from the reaction of dicarboxylic acids with diisocyanates. A fairly inexpensive and readily accessible MIL, tetrabutylammonium bromide (TBAB), was used for the synthesis of such polymers.…”

Section: Future Prospects For Pahmentioning

confidence: 80%

High-performance wholly aromatic polyamide–hydrazides

Elsabeé

Morsi

Selim³

2017

High Performance Polymers

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The review summarizes the various methods of preparing wholly aromatic polyamide–hydrazides (PAHs). Polyhydrazides are a class of polymers that possess in their repeating units one amide (–NHOC–) and one hydrazide (–CONHNHOC–) linking bond between appropriate aromatic nuclei. The review provides several figures of different molecular structures of PAH and expounds the methods of polymerization, low, high temperature, and phosphorylation polycondensation methods. Polyhydrazides exhibit some unique and potentially useful properties such as outstanding thermal and thermo-oxidative resistance, very high mechanical strength, and ultrahigh moduli. PAHs undergo structural transformation into poly(amide-1,3,4-oxadiazole)s upon heating, which are also considered highly thermally stable polymers. The review presents a description of the structure–property relation of PAHs. The application of PAHs in reverse osmosis applications has been discussed, as well as the preparation of fibers and metallized PAHs films. Modification of the PAH with carbon nanotubes and graphene and the future prospects for PAHs were introduced with comprehensive references pertaining to this area of research.

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“…Recently, molten tetrabutylammonium bromide (TBAB) has been used as an efficient catalyst for Michael addition in a number of useful synthetic transformations. These reactions catalyzed by molten TBAB are in general, very fast and clean [7][8][9][10]. The microwave dielectric heating effect uses the ability of some liquids and solids to transform electromagnetic energy into heat and thereby drive chemical reactions.…”

Section: Introductionmentioning

confidence: 99%

Use of Ionic Green Solvent for the Synthesis of Optically Active Aromatic Polyamides Containing a L-Leucine Moiety under Microwave Irradiation

Mallakpour

Zadehnazari

2009

Designed Monomers and Polymers

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An efficient, fast and easy method for the synthesis of new optically active and thermally stable aromatic polyamides (PAs) containing a pendant phthalimide group and L-leucine flexible side-spacer using ionic liquid (IL) by microwave irradiation, as well as conventional heating, has been investigated. ILs are outstanding microwave-absorbing agents owing to their high ionic conductivity and polarizability, thus leading to a high heating rate and a considerably shortened reaction time. The resulting PAs have a inherent viscosity in the range of 0.31-0.96 dl/g. All of the obtained polymers are readily soluble in many organic solvents and showed good thermal stability associated with high glass-transition temperatures (above 200 • C), as measured by differential scanning calorimetry. Thermogravimetric analysis showed that the 10% weight-loss temperatures in nitrogen were in the range 371-380 • C. The interpretation of kinetic parameters (E, H, S and G) of thermal decomposition stages has been evaluated using Coats-Redfern equations.

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Direct Polyamidation in Molten Tetrabutylammonium bromide: Novel and Efficient Green Media

Cited by 18 publications

References 14 publications

Surface tension between CO 2 gas and tetra- n -butylammonium bromide aqueous solution

Surface tension between CO 2 gas and tetra- n -butylammonium bromide aqueous solution

High-performance wholly aromatic polyamide–hydrazides

Use of Ionic Green Solvent for the Synthesis of Optically Active Aromatic Polyamides Containing a L-Leucine Moiety under Microwave Irradiation

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