几种甲基取代的新型可溶性聚芳醚酮醚砜醚酮的合成与表征

SYNTHESIS AND CHARACTERIZATION OF SEVERAL NOVEL SOLUBLE METHYL-SUBSTITUTED POLY(ARYL ETHER KETONE ETHER SULFONE ETHER KETONE)s

在无水AlCl3及DMF存在下，将4，4＇-二（4-氯甲晚苯氧基）二苯巩（SPCl）、4，4＇-二（3-氯甲酰苯氧基）二苯巩（SMCl）分别与2-甲基二苯醚（o-MDPE）和3-甲基二苯醚（m-MDPE）在1，2-二氯乙烷中进行低温溶液缩聚，合成了4种新型可溶性的甲基取代聚芳醚酮醚巩醚酮（M-PEKESEK），DSC，TG，FT-IR及WAXD等测试表明，4种聚合物均为无定型结构，其玻璃化转变温度（Tg）介于157℃～167℃，在氮气气氛中5％的热失重温度（Td）均在465℃以上，易溶于氯仿和DMF、DMSO等强极性非质子有机溶剂中．

Four novel soluble methyl substituted poly （aryl ether ketone ether sulfone ether ketone） （M-PEKESEK） polymers have been prepared by low temperature electrophilic solution polycondensation of 4,4＇-bis （4-chloroformylphenoxy）diphenylsulfone （SPCI）, 4,4＇-bis （3-chloroformylphenoxy） diphenylsulfone （SMCI） with 2-methyldiphenylether （o-MDPE） and 3-methyldiphenylether （m-MDPE） in 1,2-dichloroethane in the presence of AlCl3 and DMF, respectively. These polymers were characterized by FT-IR, DSC and WAXD, etc. The results show that the four polymers are non-crystalline with high glass transition temperature （Tg） ranging from 157℃ to 167℃ and exhibiting over 465℃ of 5% weight loss temperature in nitrogen. These polymers were soluble in CHCl3 and strongly aprotogenic organic solvents such as DMF, DMSO and NMP.