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

From two new aromatic ether monomers, N,N′-di(4-phenoxybenzoyl)-p- phenylenediamine(DPBPPD)and N,N′-di(4-phenoxybenzoyl)-m-phenylenediamine (DPBMPD), we synthesized seven 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 DPBPPD,terephthaloyl chloride(TPC) and isophthaloyl chloride(IPC) by electrophilic poly- condensation. The structures and properties of the polymers were investigated by FT-IR, DSC, TG, XRD etc. The results show that the glass transition temperature(Tg) of the polymers increases with the increasing of the ratio of TPC/IPC, while the melting temperature(Tm) and the crystallinity of the polymers decreases. The polymers exhibit excellent thermostability.2. A series of poly(aryl ether ketone amide)/poly(aryl ether ketone ketone) (PEKA/PEKK) copolymers were prepared from DPBPPD,diphenyl ether (DPE) and isophthaloyl chloride(IPC) 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) and the melting temperature(Tm) of the copolymers increase with the increasing of the ratio of DPBPPD/DPE. When the content of DPBPPD is no less than 50 mol%, the copolymers are crystalline. The copolymers exhibit good heat-resistance.3. A series of poly(aryl ether ketone amide)s(PEKAs) were prepared from DPBMPD,isophthaloyl chloride(IPC) and terephthaloyl chloride(TPC) by electrophilic poly- condensation. The structures and properties of the polymers were investigated by FT-IR, 1H NMR, DSC, TG, XRD etc. The results indicate that the polymers are non-crystalline and have high glass transition temperatures, excellent thermostabilities and good solubilities.4. A series of poly(aryl ether ketone amide)/poly(aryl ether ketone ketone) (PEKA/PEKK) copolymers were prepared from DPBMPD,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 temperature of the polymers increases and the melting temperature decreases with increasing of DPBMPD content. 5. A series of poly(aryl ether ketone amide)/poly(aryl ether sulfone ether ketone ketone)(PEKA/PESEKK) copolymers were prepared from DPBPPD,4,4′-diphenoxy diphenylsulfone(DPODPS) and terephthaloyl chloride(TPC) by electrophilic poly- condensation. The structures and properties of the copolymers were investigated by FT-IR, DSC, TG, XRD etc. The results show that the polymers are non-crystalline and the solubility has been improved, and the glass transition temperature of the polymers increases with increasing of DPBPPD content.6. A series of poly(aryl ether ketone amide)/poly(aryl ether sulfone ether ketone ketone) containing naphthalene group(PEKA/PESEKK) copolymers were prepared from DPBPPD,4,4′-bis(β-naphthoxy)diphenylsulfone(BNODPS) 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 copolymers are non-crystalline, they exhibit good heat-resistance and the solubility has been improved.7. A series of poly(aryl ether ketone amide)/poly(aryl ether ketone ketone ether ketone ketone) containing biphenyl group(PEKA/PEKKEKK) copolymers were prepared from DPBPPD,4,4′-di(4-phenoxybenzoyl)biphenyl(DPOBBP) and isophthaloyl chloride (IPC) 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 temperature(Tg) of the copolymers increases with the increasing of the ratio of DPBPPD/DPOBBP. They exhibit good heat-resistance and melting processability.