含4-苯基二氮杂萘酮结构共聚芳酯的合成及性能

以4-4-(4羧基苯氧基)苯基]-2-(4-羧基苯基)二氮杂萘-1-酮(DHPZ-DA)、4,4'-二羧基二苯醚(DAPE)和2,2'-二(4-羟基苯基)丙烷(PBA)为原料,采用溶液缩聚法,合成了一系列聚芳酯,其数均分子量在1.2×104～1.7×104之间.通过FTIR和1H-NMR对聚芳酯结构进行了表征.该系列...

SYNTHESIS AND PROPERTIES OF POLYARYLATES CONTAINING 4-PHENYLPHTHALAZINONE MOIETY

A series of poly(4-phenylphthalazinone arylate) s(PPARs) were prepared from 4-4-(4-carboxyphenoxyl) phenyl]-2-(4-carboxyphenyl) phthalazin-l-one(DHPZ-DA) and 4,4′-dicarboxydiphenyl ether(DAPE) with 4,4′-isopropylidendiphenol by solution polycondensation in pyridine at 120℃.These polyarylates have number-average molecular weights of 1.2 × 104 ～ 1.7 × 104 and relatively narrow molecular weight distribution in the range of 1.93 ～ 2.91.The structures of the obtained polyarylates were confirmed by FTIR and1H-NMR.These polyarylates showed high glass transition temperatures(Tg),which can be 229℃.The 1% weight loss temperatures of the polyarylates,measured by themogravimetric analysis,were above 400℃ in nitrogen,The 10% weight loss temperatures of the polymers were in the range of 462 ～ 490℃ in nitrogen,the weight loss peak temperature were in the range of 480 ～ 517℃ in nitrogen.These polyarylates are amorphous,and most of them exhibited excellent solubility in a variety of polar aprotic solvents such as pyridine(Py),N-methyl-2-pyrrolidinone(NMP),tetrahydrofuran(THF),chloroform and N,N-dimethylformamide(DMF).The polyarylates can form transparent,strong and flexible films with tensile strength in the range of 61 ～ 80 MPa,Young’s moduli in the range of 0.93 ～ 1.38 GPa,and elongation at break in the range of 13% ～ 18%.