Synthesis and Characterization of Polyimides Derived from 5-Amino-2(p-aminophenyl) Benzoxazole Monomer
作者： Xiang Li Meng , Peng Wang , Ling Jiang
DOI: 10.4028/WWW.SCIENTIFIC.NET/AMR.415-417.1789
关键词:
摘要: Polyimides prepared from 5-amino-2(p-aminophenyl) benzoxazole (AAPB) with pyromellitic dianhydride(PMDA), 2,2’3,3’-biphenyl tetracarboxylic dianhydride(i-BPDA), 4,4’-oxdiphthalic anhydride(ODPA), 1,4-bis(3,4-dicarbosyphenoxy) benzene dianhydride(HQDPA) and 2,2-bis(3,4-dicarboxyphenyl)hexafluoropropane dianhydride (6FDA) were synthesized successfully via a conventional two-stage method. Their structures properties characterized by FT-IR, DSC, TG XRD. The intermediate poly(amic acid)s had inherent viscosity range of 0.86~2.18 dL/g could be thermally converted into light yellow polyimide films. polyimides showed excellent solvent resistance good thermal stability. glass transition temperatures (Tg) found to 336oC~369 oC .The decomposition started at temperature above 530oC in N2 atmosphere.
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