ABSTRACT
Abstract α,ω-Functionalized polyimides with maleimide (PI-MI) and furan (PI-F) terminal groups are prepared for using as macro-monomers in the synthesis of high-molecular-weight polyimides (PI-DA) through the Diels-Alder (DA) reaction between maleimide and furan groups. The chemical structures of the prepared polyimides were characterized with FT-IR and 1H NMR. PI-DA polymers exhibit chain-breaking behavior under heat treatment through retro-DA reaction to bring about solubility alternation for the polymer. Chloroform and dichloromethane were used as selective solvents for the PI-DA polyimides before and after heat treatment. Thus, a new class of polyimides with selective solubility was developed.
