화학공학소재연구정보센터
Industrial & Engineering Chemistry Research, Vol.49, No.23, 12098-12103, 2010
Synthesis and Properties of Linear Poly(ether sulfone)s with Hyperbranched Terminal Groups
Linear-dendritic ABA copolymers, where A and B are hyperbranched and linear polymers, respectively, were synthesized by growing hyperbranched poly(ether ketone)s onto the ends of fluoro-terminated poly(ether sulfone)s. The unreacted fluoro-terminal groups of the hyperbranched polymers were capped by tert-butylphenol. The reactions were carried out at 90 degrees C to suppress ether cleavage. The results from NMR and SEC showed that multiple tert-butylphenol units were successfully attached to the terminal segments of the polymers. Analogous systems with sulfonated end groups were also synthesized by capping the fluoro terminal groups with a sulfonated phenol. This synthetic method is a versatile way to introduce multiple functional groups onto the ends of poly(ether sulfone)s.