• Corpus ID: 101645725

Synthesis of Soluble Copolyimide Based on BAPP-ODA-ODPA

@inproceedings{Changfeng2010SynthesisOS,
  title={Synthesis of Soluble Copolyimide Based on BAPP-ODA-ODPA},
  author={Yi Chang-feng},
  year={2010}
}

• Yi Chang-feng
• Published 2010
• Materials Science

A soluble copolyimide was synthesized via the conventional two-step thermal or chemical imidization process by using 2,2-bis[4-(4-aminophenoxy)phenyl]propane(BAPP) and 4,4′-diaminodiphenyl ether(ODA) as the diamine monomer,4,4′-oxydiphthalic dianhydride(ODPA) as the dianhydride monomer in dimethylformamide(DMF).The structure of the copolyimide was characterized by FTIR.The FTIR test indicates that the copolyimide exhibits characteristic peaks of polyimides around 1 780 cm-1,1 720 cm-1 and 725 cm-1.The properties of the copolyimide were measured by solubility tests,DSC,TGA,tensile tests and water absorbency tests.The resulting copolyimide is soluble in common organic solvents.It has good thermal stability,with initial decomposition temperature higher than 500 ℃,and shows 56.1% of residue at 800 ℃ under nitrogen atmosphere.The copolyimide film shows 114.6 MPa of tensile strength,2.58 GPa of tensile modulus,12.2% of elongation at break and 0.89% of water absorbency.