4,4′-二(β-萘氧基)二苯砜改性聚醚酮醚酮酮的研究

Study on Poly(ether ketone ether ketone ketone)Modified with 4,4′ Bis(β naphthoxy)diphenylsulfone

将新单体－４，４′－二（β－萘氧基）二苯砜（ＢＮＯＤＰＳ）和对苯二甲酰氯、４，４′－二苯氧基二苯甲酮进行傅－克酰化聚合，制得了一系列主链含萘环的聚醚酮醚酮酮／聚醚砜醚酮酮（ＰＥＫＥＫＫ／ＰＥＳＥＫＫ）共聚物。研究表明，ＰＥＳＥＫＫ含量小于４０ｍｏｌ％时，可制得结晶聚合物。共聚物具有比ＰＥＫＥＫＫ更优异的耐热性，随着主链中ＰＥＳＥＫＫ含量增加，共聚物Ｔｇ逐渐升高，Ｔｍ、结晶度逐渐降低，仍具有很好的耐溶剂性。

s A series of random copolymers of poly(ether ketone ether ketone ketone)(PEKEKK)/poly(ether sulfone ether ketone ketone)(PESEKK)were prepared by Friedel-Crafts acylation polycondensation of 4,4′ bis(β naphthoxy)diphenylsulfone,terephthaloyl chloride and 4,4′ diphenoxybenzene in a catalyst/solvent system of AlCl 3/ClCH 2CH 2Cl/DMF.The research showed that the crystalline copolymers could be made when the PESEKK content was below 40mol%.The copolymers exhibit better heat resistance than the PEKEKK.The T g of copolymers increases,the T m and crystallinity decrease with PESEKK content increasing,the copolymers still have excellent solvent resistance