• Materials Science
  • Published 2008

Synthesis and Characterization of Aromatic Polyimide

  title={Synthesis and Characterization of Aromatic Polyimide},
  author={Huang Pei},
Under the catalysis of catalyst 4,4'-dihydroxy diphenyl ether,the 4,4'-bis(4-nitro phenoxy) was prepared.The diphenyl ether(BAPE-M,yield: ≥ 99.3%) was synthesized in etherification reaction from 4,4'-dihydroxy diphenyl ether and p-chloronitrohenzene.Then BAPE-M was reduced into 4,4'-bis(4-amino phenoxy) diphenyl ether(BAPE) by hydrazine hydrate.Moreover,BAPE/PMDA-PAA polyamide acid was polymerized between BAPE and pyromellitic dianhydride(PMDA),and further imidized into BAPE/PMDA-PI polyimide… CONTINUE READING