ICCAS OpenIR
Synthesis and properties of ionic, rigid-rod, and thermally stable polyimides containing bipyridinium triflates
Sun, XH; Yang, YK; Lu, FC
1998-06-30
Source PublicationMACROMOLECULES
ISSN0024-9297
Volume31Issue:13Pages:4291-4296
AbstractA series of 4,4'-(1,4-phenylene)bis(N-amino-2,6-diphenylpyridiniumtriflate) compounds were synthesized by reaction of 4,4'-(1,4-phenylene)bis(2,6-diphenylpyrylium triflate) with various aromatic diamines. They were used as starting materials for the preparation of novel ionic rigid-rod polyimides. The resulting poly(amic acid)s had inherent viscosities of 0.73-1.93 dL/g. Thermal cyclodehydration of poly(amic acid)s afforded the polyimides. Their inherent viscosities were in the range of 0.31-0.58 dL/g. These polyimides are basically amorphous and are soluble in polar aprotic solvents. A lyotropic behavior could be observed in a concentrated solution of dimethylformamide and methylpyrrolidone. Thermogravimetric analyses showed that they are thermally stable with 5% weight losses recorded in the range of 459-478 degrees C under nitrogen and 469-489 degrees C in air. The polyimides had a tensile strength range of 59-93 MPa, and an elongation at break range of 5-9%. Reversibe color development of these polyimides could be observed upon irradiation in solution or in a polymer matrix.
Indexed BySCI
Language英语
WOS IDWOS:000074627400034
PublisherAMER CHEMICAL SOC
Citation statistics
Cited Times:36[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.iccas.ac.cn/handle/121111/74338
Collection中国科学院化学研究所
Corresponding AuthorYang, YK
AffiliationChinese Acad Sci, Inst Chem, Beijing 100080, Peoples R China
Recommended Citation
GB/T 7714
Sun, XH,Yang, YK,Lu, FC. Synthesis and properties of ionic, rigid-rod, and thermally stable polyimides containing bipyridinium triflates[J]. MACROMOLECULES,1998,31(13):4291-4296.
APA Sun, XH,Yang, YK,&Lu, FC.(1998).Synthesis and properties of ionic, rigid-rod, and thermally stable polyimides containing bipyridinium triflates.MACROMOLECULES,31(13),4291-4296.
MLA Sun, XH,et al."Synthesis and properties of ionic, rigid-rod, and thermally stable polyimides containing bipyridinium triflates".MACROMOLECULES 31.13(1998):4291-4296.
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