Synthesis And Properties Of Novel Poly(Aryl Ether Ketone)s Containing Amide Groups In Main Chain

From two new aromatic ether monomers, N,N′-bis(4-phenoxybenzoyl)-4,4′- diaminodiphenyl ether(BPBDAE)and N,N′-bis(4-phenoxybenzoyl)-4,4′-diamino- diphenyl sulfone (BPBDAS), we synthesized six new types of poly(aryl ether ketone)s containing amide groups in main chain by electrophilic polycondensation.1. A series of poly(aryl ether ketone amide)s (PEKAs) were prepared from BPBDAE,terephthaloyl chloride (TPC) and isophthaloyl chloride (IPC) by electrophilic polycondensation. The structures and properties of the polymers were investigated by FT-IR, 1H NMR, DSC, TG, XRD, etc. The results show that the glass transition temperature (Tg) of the polymers increased with the increasing of the ratio of TPC/IPC, all these copolymers are non-ceystalline. The copolymers exhibited excellent thermostability.2. A series of poly(aryl ether ketone amide)/poly(aryl ether ketone ketone) (PEKA/PEKK) copolymers were prepared from BPBDAE,diphenyl ether (DPE) and terephthaloyl chloride(TPC) by electrophilic polycondensation. The structures and properties of the copolymers were investigated by FT-IR, DSC, TG, XRD etc. The results show that the glass transition temperature (Tg) of the copolymers increased with the increasing of the ratio of BPBDAE/DPE, while the melting temperature (Tm) decreased. When the content of BPBDAE is less than 30 mol%, the obtained copolymers are crystalline. The copolymers exhibited good heat-resistance.3. A series of poly(aryl ether ketone sulfone amide)s (PEKSAs) were prepared from BPBDAS,isophthaloyl chloride (IPC) and terephthaloyl chloride (TPC) by electro- philic polycondensation. The structures and properties of the copolymers were investigated by FT-IR, 1H NMR, 13C NMR, DSC, TG, XRD etc. The results indicate that all the copolymers are non-crystalline and have high glass transition temperatures, excellent thermostabilities and good solubilities.4. A series of poly(aryl ether ketone sulfone amide)/poly(aryl ether ketone ketone) (PEKSA/PEKK) copolymers were prepared from BPBDAS,diphenyl ether (DPE) and terephthaloyl chloride (TPC) by electrophilic polycondensation. The structures and properties of copolymers were investigated by FT-IR, DSC, TG, XRD etc. The results show that the glass transition temperatures of the copolymers increased with increasing of BPBDAS content and the melting temperatures decreased.5. A series of poly(aryl ether ketone amide)/poly(aryl ether ketone biphenyl ketone ether ketone ketone)(PEKA/PEKDKEKK) copolymers were prepared from BPBDAE and 4,4′- di(4-phenoxybenzoyl)biphenyl (DPOBBP) and terephthaloyl chloride (TPC) by electrophilic polycondensation. The structures and properties of the copolymers were investigated by FT-IR, DSC, TG, XRD etc. The results show that the glass transition temperatures of the copolymers increased with increasing of BPBDAE content, while the melting temperatures decreased with increasing of BPBDAE content.6. A series of poly(aryl ether ketone sulfone amide)/poly(aryl ether ketone biphenyl ketone ether ketone ketone) (PEKSA/PEKDKEKK) copolymers were prepared from BPBDAS,DPOBBP and terephthaloyl chloride(TPC) by electrophilic polycondensa- tion. The structures and properties of the copolymers were investigated by FT-IR, DSC, TG, XRD etc. The results show that the copolymers exhibited good heat-resistance and the glass transition temperatures of the copolymers increased with increasing of BPBDAS content, while the melting temperatures decreased with increasing of BPBDAS content.