| 초록 |
Polyimides(PI) has been received many attentions in various fields because of its heat resistant, chemical stability and mechanical properties. Although these advantages, there are several problems such as insoluble, infusible properties. PI is generally insoluble, so it has a low process ability. In this reason, recently the fluorinated polyimides(FPI) which has a good solubility received more attention. Herein, we prepared the functionalized FPI to more increase thermal stability and properties. FPI were synthesized from4,4′- (hexafluoroisopropylidene) diphthalic anhydride (6FDA) containing a fluorine group (CF3), 4,4-Oydianilline (ODA) which has aromatic structure and 1,6-diaminohexane (DAH) with an aliphatic structure. We prepare both aromatic FPI and aliphatic structure FPI, and Fourier-transform infrared spectroscopy (FT-IR), Nuclear magnetic resonance spectroscopy (NMR), Thermogravimetric analysis (TGA) were used to compare mechanical properties and chemical properties. |
