SYNTHESIS AND CHARACTERIZATION OF NEW AROMATIC POLY(AMIDE-IMIDE-UREA)S DERIVED FROM BIS(4-TRIMELLITIMIDOPHENYL) UREA AND VARIOUS AROMATIC DIAMINES

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BANI HASHEMI A.; TAMAMI B.; ABD ALMALEKI A.

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Journal: Iranian Polymer Journal Year:2004 | Volume:13 | Issue:4 Page(s): 307-315

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Title

SYNTHESIS AND CHARACTERIZATION OF NEW AROMATIC POLY(AMIDE-IMIDE-UREA)S DERIVED FROM BIS(4-TRIMELLITIMIDOPHENYL) UREA AND VARIOUS AROMATIC DIAMINES

Author(s)

BANI HASHEMI A. | TAMAMI B. | ABD ALMALEKI A. | Issue Writer Certificate

Keywords

AROMATIC POLYIMIDESQ4

POLY(AMIDE-IMIDE-UREA)Q4

AROMATIC DIAMINESQ4

DIRECT POLYCONDENSATIONQ4

THERMAL STABILITYQ4

Abstract

New aromatic poly(amide-imide-urea)s with enhanced thermal stability and high inherent viscosities were synthesized from a new bis(4-trimellitimidophenyl) urea (I) and AROMATIC DIAMINES. The bis(4-trimellitimidophenyl) urea (I) was readily obtained by the condensation reaction of bis(4-aminophenyl) urea with trimellitic anhydride. Polymers were prepared by DIRECT POLYCONDENSATION reaction using triphenyl phosphite in N-methyl-2-pyrrolidone (NMP)/pyridine solution containing dissolved CaCl2. The obtained poly(amide-imide-urea)s showed high thermostability. Their decomposition temperatures at 10% weight loss in nitrogen atmosphere were above 515 C and the anaerobic char yield at 800?C ranged from 45 to 65%. Almost all the poly(amide-imide-urea)s showed high glass transition temperature above 205 C by differential scanning calorimetry (DSC) measurements. These polymers were readily soluble in various organic solvents and could be cast into transparent, tough, and flexible films.

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APA: Copy

BANI HASHEMI, A., TAMAMI, B., & ABD ALMALEKI, A.. (2004). SYNTHESIS AND CHARACTERIZATION OF NEW AROMATIC POLY(AMIDE-IMIDE-UREA)S DERIVED FROM BIS(4-TRIMELLITIMIDOPHENYL) UREA AND VARIOUS AROMATIC DIAMINES . IRANIAN POLYMER JOURNAL (ENGLISH), 13(4), 307-315. SID. https://sid.ir/paper/85916/en

Vancouver: Copy

BANI HASHEMI A., TAMAMI B., ABD ALMALEKI A.. SYNTHESIS AND CHARACTERIZATION OF NEW AROMATIC POLY(AMIDE-IMIDE-UREA)S DERIVED FROM BIS(4-TRIMELLITIMIDOPHENYL) UREA AND VARIOUS AROMATIC DIAMINES . IRANIAN POLYMER JOURNAL (ENGLISH)[Internet]. 2004;13(4):307-315. Available from: https://sid.ir/paper/85916/en

IEEE: Copy

A. BANI HASHEMI, B. TAMAMI, and A. ABD ALMALEKI, “SYNTHESIS AND CHARACTERIZATION OF NEW AROMATIC POLY(AMIDE-IMIDE-UREA)S DERIVED FROM BIS(4-TRIMELLITIMIDOPHENYL) UREA AND VARIOUS AROMATIC DIAMINES ,” IRANIAN POLYMER JOURNAL (ENGLISH), vol. 13, no. 4, pp. 307–315, 2004, [Online]. Available: https://sid.ir/paper/85916/en

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