| 초록 |
A novel transparent fluorinated polyimide (TfPI) is synthesized, then its optical and mechanical properties are characterized in this study. A diamino-terminated oligomer with alicyclic groups and amide groups (OAA) is synthesized using trimellitic anhydride chloride (TAC) and 2,2'-Bis(trifluoromethyl)-[1,1'-biphenyl]-4,4'-diamine (TFDB). OAA is then reacted with 1,2,3,4-Cyclobutanetetracarboxylic dianhydride (CBDA) and 4,4'-(hexafluoroisopropylidene) diphthalic anhydride (6FDA) to prepare TfPI. TFDB, 6FDA, and TAC are reacted to prepare conventional transparent fluorinated polyimide (CfPI) as a reference. Interestingly, TfPI film shows enhanced outstanding optical and mechanical properties compared to CfPI film, which results from the unique interaction between alicyclic oligomers and polyimide chains. |
