Release Time:2019-03-10  Hits:

Indexed by: Journal Article

Date of Publication: 2004-08-01

Journal: CHINESE JOURNAL OF POLYMER SCIENCE

Included Journals: EI、SCIE、Scopus

Volume: 22

Issue: 4

Page Number: 389-393

ISSN: 0256-7679

Key Words: poly(arylene amide imide)s; heterocyclic polymer; high-performance polymer; phthalazinone

Abstract: The direct polymerization of an unsymmetrical kink non-coplanar heterocyclic diamine (1) with various aromatic bis(trimellitimide)s (2a-e) using triphenyl phosphite and pyridine as condensing agents could generate a series of new aromatic poly(amide imide)s (3a-e) containing the kink non-coplanar plithalazinone heterocyclic units in the polymer main chains with inherent viscosities of 0.58-0.66 dL/g. The polymers are readily soluble in a variety of solvents such as N,N-dimethylformamide, NN-dimethylacetamide, dimethyl sulfoxide, N-methyl-2-pyrrolidinone, pyridine and m-cresol and can be cast to form flexible and tough films. The glass transition temperatures of polymers (T-g) are in the range of 301-327degreesC, and the temperatures for 5% weight loss in nitrogen are in the range of 498-521 degreesC.