| 초록 |
Aromatic polybenzoxazoles(PBOs) have been known high-performance polymers with excellent thermal stability, mechanical properties, and good chemical resistance. However, as with aromatic polymers they are generally difficult to process because of their high melting and glass-transition temperatures and poor solubility in conventional organic solvents. Therefore, attempts have been made to modify the backbone structure and improve their processibility. Polyhydroxyamides(PHAs) having fluorine and ether group were synthesized by solution polycondensation at low temperature. This precursor polymers were studied by FT-IR, 1H-NMR, DSC, and TGA. |
