Study On Synthesis And Properties Of Novel Poly (Aryl Ether Ketone Imide)s

Two aromatic diacid dichlorides containing imide groups, bis(4-chloroformyl-1, 2-benzenedioyl)-N,N,N',N'-4,4'-diaminodiphenyl ether (DIDC-E) and bis(4-chloro-formyl-1,2-benzenedioyl)-N,N,N',N'-4,4'-diaminodiphenyl sulfone(DIDC-S), were prepared by the imidization reaction of trimellitic anhydride(TMA) with 4,4'-diamino-diphenyl ether or 4,4'-diaminodiphenyl sulfone,followed by reaction withthionyl chloride in the presence of DMF, respectively. They were characterized by 1H-NMR,13C-NMR, FT-IR, and the results showed that DIDC-E and DIDC-S have the expected structures. Two new aromatic ether monomers containing imide groups, bis-[4-(p-phenoxy-benzoyl)-1,2-benzenedioyl]-N,N,N',N'-4,4'-diaminodiphenyl et-her (DPEDIDC-E) and bis[4-(p-phenoxybenzoyl)-1,2-benzenedioyl]-N,N,N',N'-4,4'-diaminodiphenylsulfone(DPEDIDC-S), were prepared by Friedel-Crafts acylation reaction of DIDC-E or DIDC-S with diphenyl ether (DPE) and characterized by 1H-NMR,13C-NMR, FT-IR, and the results showed that DPEDIDC-E and DPEDIDC-S have the expected structures.1. A series of poly(ether ketone imide)/poly(ether ketone ether ketone ketone) (PEKI/PEKEKK) copolymers were prepared from DPEDIDC-E and 4,4'-diphenoxy-benzophenone (DPOBPN) with 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 DPEDIDC-E content, while the melting temperatures decreased with increasing of DPEDIDC-E content. The copolymers with 10-40 mol%DPEDIDC-E are semicrystalline and the copolymers with 40 mol% DPEDIDC-E had not only high Tg of 191℃, but also a moderate Tm of 338℃, which is extermely suitable for melt processing.2. A series of poly(ether ketone sulfone imide)/poly(ether ketone ether ketone ketone)(PEKSI/PEKEKK)copolymers were prepared from DPEDIDC-S and 4,4'-diphenoxy-benzophenone (DPOBPN) with 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 DPEDIDC-S content, while the melting temperatures decreased with increasing of DPEDIDC-S content. The copolymers with 10-30 mol% DPEDIDC-S are semicrystalline and the copolymers with 30 mol% DPEDIDC-S had not only high Tg of 176℃, but also a moderate Tm of 342℃,which is extermely suitable for melt processing.3. A series of poly(ether ketone imide)/poly(ether diphenyl ether ketone ketone)(PEKI/PEDEKK) copolymers were prepared from DPEDIDC-E and 4,4'-diphenoxybiphenyl (DPOBP) 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 all the copolymers are non-crystalline and have high glass transition temperatures, good thermostabilities.4. A series of poly(ether ketone imide)/poly(ether ketone diphenyl ketone ether ketone ketone)(PEKI/PEKDKEKK) copolymers were prepared from DPEDIDC-E 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 DPEDIDC-E content,while the melting temperatures decreased with increasing of DPEDIDC-E content. The copolymers with 10-40 mol% DPEDIDC-E are semicrystalline and the copolymers with 40 mol% DPEDIDC-E had not only high Tg of 191℃and higher Tm of 372℃。...