Citation: . A QUICK AND GREEN IONIC LIQUID-MEDIATED APPROACH FOR THE SYNTHESIS OF HIGH-PERFORMANCE, ORGANOSOLUBLE AND THERMALLY STABLE POLYIMIDES[J]. Chinese Journal of Polymer Science, ;2013, 31(4): 679-690. doi: 10.1007/s10118-013-1258-z shu

A QUICK AND GREEN IONIC LIQUID-MEDIATED APPROACH FOR THE SYNTHESIS OF HIGH-PERFORMANCE, ORGANOSOLUBLE AND THERMALLY STABLE POLYIMIDES

Received Date: 11 July 2012
Revised Date: 28 August 2012

Three diamine monomers with different derivatives of imidazole heterocyclic ring and meta-linked aryl ethers were synthesized and used in polycodensation reaction with various commercial dianhydrides for preparation of a series of novel poly(ether-imide) (PEI)s. The polycodensation reactions were carried out by using conventional method and in a green medium of ionic liquid (IL) without using NMP-pyridine-acetic anhydride. The PEIs were obtained in good yields (80%-96%) with moderate viscosity (0.48-0.66 dL/g) in a shorter reaction time (10 h) in IL as compared with the conventional method (36 h). All of the polymers were amorphous in nature, showed excellent solubility in amide-type polar aprotic solvents with ability to form tough and flexible films, and excellent thermal stability with Tgs in the range of 212-340 ℃ and 10% weight loss temperature (T10) up to 570 ℃ in N2 and 528 ℃ in air.
- Ionic liquids,
- Poly(ether-imide),
- Polycodensation,
- Green media,
- Thermal properties
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