We synthesized a series of polymers: poly(ether ether ketone ketone) (PEEKK),poly (ether biphenyl ether ketone ketone) (PEBEKK) and their copolymer by polycondensation. We also prepared a series of PEEKK-PEBEKK blends...We synthesized a series of polymers: poly(ether ether ketone ketone) (PEEKK),poly (ether biphenyl ether ketone ketone) (PEBEKK) and their copolymer by polycondensation. We also prepared a series of PEEKK-PEBEKK blends. By using DSC method, we found that Tg of the copolymers and the blends rose with the increasing of biphenyl contents in the polymers. Tc of the copolymers and the blends is higher than the corresponding homopolymer. From the results, we think that PEEKK-PEBEKK copolymer and blends are miscible and the copolymer is random.展开更多
Poly(ether ketone ether ketone ketone) containing meta phenylene linkage(PEKEKmK) was synthesized from 4,4′ diphenoxybenzophenone and isophthaolyl chloride by electrophilic polycondensation and characterized by IR, D...Poly(ether ketone ether ketone ketone) containing meta phenylene linkage(PEKEKmK) was synthesized from 4,4′ diphenoxybenzophenone and isophthaolyl chloride by electrophilic polycondensation and characterized by IR, DSC, TGA and WAXD. The crystallization of the PEKEKmK has been carried out under different conditions: melt crystallization, cold crystallization and solvent induced crystallization and the following order of crystallinity was obtained: W cx,melt > W cx,cold > W cx,sic .展开更多
文摘We synthesized a series of polymers: poly(ether ether ketone ketone) (PEEKK),poly (ether biphenyl ether ketone ketone) (PEBEKK) and their copolymer by polycondensation. We also prepared a series of PEEKK-PEBEKK blends. By using DSC method, we found that Tg of the copolymers and the blends rose with the increasing of biphenyl contents in the polymers. Tc of the copolymers and the blends is higher than the corresponding homopolymer. From the results, we think that PEEKK-PEBEKK copolymer and blends are miscible and the copolymer is random.
文摘Poly(ether ketone ether ketone ketone) containing meta phenylene linkage(PEKEKmK) was synthesized from 4,4′ diphenoxybenzophenone and isophthaolyl chloride by electrophilic polycondensation and characterized by IR, DSC, TGA and WAXD. The crystallization of the PEKEKmK has been carried out under different conditions: melt crystallization, cold crystallization and solvent induced crystallization and the following order of crystallinity was obtained: W cx,melt > W cx,cold > W cx,sic .
