【摘要】 由对苯二甲酰氯(TPC)经FeCl3催化氯化制备了四氯对苯二甲酰氯(TCTPC),并用元素分析、质谱和红外光谱分析技术进行了结构表征。在无水AlCl3及NMP存在下,将TCTPC、4, 4′-二苯氧基二苯砜(DPODPS)和TPC进行三元低温溶液共缩聚反应,合成了一系列新型多氯取代的高分子量聚芳醚酮砜(PESEKK/C PESEKK)无规共聚物。经FT-IR、DSC、TG及WAXD等分析表明,共聚物为非晶态结构,其玻璃化转变温度(Tg)介于168~232℃之间,高于已商品化的PEEK和PEKK,且随共聚物中多氯取代C-PESEKK结构单元含量增加而增加, 5%热失重温度(Td)则稍低于PEEK和PEKK。共聚物易溶于氯仿及DMF和DMSO等强极性非质子有机溶剂中。更多还原

【Abstract】 Tetrachloroterephthaloyl chloride（TCTPC） was synthesized via chlorination of terephthaloyl （chloride）（TPC） catalyzed by ferric chloride at 175～180 ℃ for 10 h, and confirmed by means of FTIR, MS and （elemental） analysis. A series of novel polychloro substituted poly（aryl ether ketone sulfone）（PESEKK/（C-PESEKK）） copolymers with high molecular weights were prepared by low-temperature solution polycondensation of TCTPC, 4,4-diphenoxydiphenyl sulfone（DPODPS） and TPC in 1,2-dichloroethane in the presence of AlCl₃ and NMP. The copolymers were characterized by FT-IR, DSC and WAXD, etc. The results show that the copolymers are non-crystalline, exhibit high T_g′s（168～232 ℃）, which are higher than that of commercial PEEK and PEKK, and increase with increasing C-PESEKK content. But the decomposition onset temperatures(T_d)（5% mass loss） of the copolymers were a little lower than that of commercial PEEK and PEKK. The （copolymers） are soluble in CHCl₃, and especially in strong aprotogenic organic solvents such as DMF, （DMSO） and NMP at room temperature.更多还原