| 초록 |
In this work, synthesized amine functionalized graphene oxide (A-GO) to improve curing efficiency, gas barrier properties, and thermal stability of PI nanocomposites. A series of PI nanocomposites with different A-GO loading were then prepared by in-situ polymerization. When A-GO was introduced 3 wt %, imidization proceeded completely at 200 ° C. In addition, the PI/A-GO nanocomposite films exhibited reinforcement of the oxygen barrier properties which were even better than those of pristine PI, due to the excellent dispersion state of A-GO and the favorable non-covalent interaction between A-GO and the PI matrix. The oxygen barrier property of PI/A-GO 1 wt.% is 80 % better than pure PI. Furthermore, all the PI/A-GO nanocomposites exhibited high thermal stability. |
