Citation: Hojjat Toiserkani. HEAT STABLE AND ORGANOSOLUBLE BENZOXAZOLE OR BENZOTHIAZOLE-CONTAINING POLY(IMIDE-ESTER)S AND POLY(ETHER-IMIDE-ESTER)S: SYNTHESIS AND CHARACTERIZATION[J]. Chinese Journal of Polymer Science, ;2013, 31(11): 1528-1537. doi: 10.1007/s10118-013-1300-1 shu

HEAT STABLE AND ORGANOSOLUBLE BENZOXAZOLE OR BENZOTHIAZOLE-CONTAINING POLY(IMIDE-ESTER)S AND POLY(ETHER-IMIDE-ESTER)S: SYNTHESIS AND CHARACTERIZATION

Hojjat Toiserkani ^1,2,3,,

1.
1. Department of Chemistry, College of Sciences, Hormozgan University, Bandar Abbas 3995, Iran
2.
2. College of Oil Engineering, Hormozgan University, Bandar Abbas 3995, Iran
3.

Corresponding author: Hojjat Toiserkani,
Received Date: 28 November 2012
Revised Date: 2 January 2013

Two series of poly(imide-ester)s (PIEs) and poly(ether-imide-ester)s (PEIEs), having benzoxazole or benzothiazole pendent groups, were conveniently prepared by the diphenylchlorophosphate-activated direct polyesterification of two bis(imide-carboxylic acid)s (1), such as 2-[3,5-bis(N-trimellitimidoyl)phenyl]benzoxazole (1O) and 2-[3,5-bis(N-trimellitimidoyl)phenyl]benzothiazole (1S) and two bis(imide-ether-carboxylic acid)s (2), such as 2-[3,5-bis(4-trimellitimidophenoxy)-phenyl]benzoxazole (2O), and 2-[3,5-bis(4-trimellitimidophenoxy)-phenyl]benzothiazole (2S) with various aromatic dihydroxy compounds in the presence of pyridine and lithium chloride. The structures, solubilities and thermal properties of obtained polymers were investigated in detail. All of the resulting polymers were characterized by FTIR and 1H-NMR spectroscopy and elemental analysis. All of the resulting polymers exhibited excellent solubility in common organic solvents, such as pyridine, tetrahydrofuran and m-cresol, as well as in polar organic solvents, such as N-methyl-2-pyrrolidone, N,N-dimethylacetamide, N,N-dimethylformamide and dimethyl sulfoxide. The modified polymers were obtained in quantitative yields with inherent viscosities between 0.47 and 0.67 dlg-1. Experimental results indicated that all the polymers had glass transition temperature between 198 ℃ and 262 ℃, the decomposition temperature at 10% weight loss between 398 ℃ and 531 ℃ under nitrogen.
- Poly(imide-ester)s,
- Poly(ether-imide-ester)s,
- Thermal properties,
- Solubility,
- Pendent groups,
- Structure-property relation
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