SYNTHESIS AND CHARACTERIZATION OF POLY(p-ARYLENE SULFIDE KETONE/SCHIFF BASE) COPOLYMERS  

作　　者：杨杰 

机构地区：[1]Analytical and Testing Center,Sichuan University [2]State Key Laboratory of Polymer Materials & Engineering(Sichuan University)

出　　处：《Chinese Journal of Polymer Science》2012年第3期370-377,共8页高分子科学（英文版）

基　　金：financially supported by the National High Technology Foundation of China(No.2007AA03Z561).

摘　　要：Poly（p-arylene sulfide ketone/Schiffbase） copolymers （PASK/SB） were prepared by solution polycondensation of 4,4＇-diflurobenzophenone （DFBP） and N-phenyl（4,4＇-diflurodiphenyl） ketimine （DFBI） with sodium sulfide in the presence of sodium hydroxide under normal pressure. Elemental analyses, FT-IR, NMR, DSC, TGA and XRD were used to characterize the resultant copolymers. It was found that the copolymers had good thermal properties with glass transition temperature （Tg） of 155.0-172.0℃, melting temperature （Tm） of 298-344℃, 5% weight loss temperatures （Td） of 471.0-501.5℃. These copolymers were almost amorphous with the content of DFBI beyond 30%. The polymer with 100% DFBI had excellent solubility, and it could dissolve in some solvents such as tetrahydrofuran （THF） and N-methyl-2- pyrrolidone （NMP）. The processability of polymers was improved. Meantime the viscosity of PASK made from hydrolysis of PASK/SB （H-PASK/SB） was greatly improved from 0.135 dL/g to 0.605 dL/g.Poly（p-arylene sulfide ketone/Schiffbase） copolymers （PASK/SB） were prepared by solution polycondensation of 4,4＇-diflurobenzophenone （DFBP） and N-phenyl（4,4＇-diflurodiphenyl） ketimine （DFBI） with sodium sulfide in the presence of sodium hydroxide under normal pressure. Elemental analyses, FT-IR, NMR, DSC, TGA and XRD were used to characterize the resultant copolymers. It was found that the copolymers had good thermal properties with glass transition temperature （Tg） of 155.0-172.0℃, melting temperature （Tm） of 298-344℃, 5% weight loss temperatures （Td） of 471.0-501.5℃. These copolymers were almost amorphous with the content of DFBI beyond 30%. The polymer with 100% DFBI had excellent solubility, and it could dissolve in some solvents such as tetrahydrofuran （THF） and N-methyl-2- pyrrolidone （NMP）. The processability of polymers was improved. Meantime the viscosity of PASK made from hydrolysis of PASK/SB （H-PASK/SB） was greatly improved from 0.135 dL/g to 0.605 dL/g.

关 键 词：Synthesis PASK Schiffbase COPOLYMER Spin ability. 

分 类 号：O631.3[理学—高分子化学]