Aromatic/cycloaliphatic polyimides and polyamide-imide from trans-1,4-cyclohexane diisocyanate: Synthesis and properties | Health & Environmental Research Online (HERO)

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Citation
Tags

HERO ID

7943758

Reference Type

Journal Article

Title

Aromatic/cycloaliphatic polyimides and polyamide-imide from trans-1,4-cyclohexane diisocyanate: Synthesis and properties

Author(s)

Barikani, M; Mehdipour-Ataei, S

Year

2000

Is Peer Reviewed?

Yes

Journal

Journal of Applied Polymer Science
ISSN: 0021-8995
EISSN: 1097-4628

Volume

Issue

Page Numbers

1102-1107

Language

English

DOI

10.1002/1097-4628(20000801)77:5<1102::AID-APP18>3.0.CO;2-5

Web of Science Id

WOS:000087309500018

Abstract

Mixed aromatic/alicyclic polyimides were prepared by polycondensation reactions of trans-1,4-cyclohexane diisocyanate (CHDI) with pyromellitic dianhydride (PMDA), benzophenonetetracarboxylic dianhydrid (BTDA), and hexafluoroisopropylidene diphthalic anhydride (6FDA). Also, polycondensation of CHDI with trimellitic anhydride led to synthesis of polyamide-imide. In order to obtain the optimized condition for polymerization reactions, model compound studying was considered. Model compound and polymers were characterized by common methods. Physical properties of polymers, including thermal behavior, thermal stability, solution viscosity, and solubility behavior, were also studied. Mild polymerization condition was the main advantage of using diisocyanate instead of diamine in synthesis of these thermally stable polymers. Furthermore, synthesis of poly(amic acid) and polyimide via nonaromatic diamine can introduce synthetic problems, but by applying nonaromatic diisocyanate a facile method for preparation of aromatic/cycloaliphatic polyimides was obtained.

Keywords

polyimide; polyamide-imide; dianhydride; diisocyanate; synthesis