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Studies on the Synthesis of Polyaryl Ether Ketone by Electrophilic Polymerization——The Synthesis and Characterization of Polyaryl Ether Ether Ketone Ketone Sulfone

Cai Mingzhong Song Caisheng zhou Liyun (Dept.of Chem.)  
Five different structures of polyaryl ether ether ketone ketone sulfone (PEEKKS)were synthesized from 4,4'—diphenoxyldiphenyl sulfone,terephthaloyl chloride (TPC),isophthaloyl chloride(IPC),2,5—dichloroterephthaloyl chloride(DCC)in 1,2— dichloroethane by Friedel-Crafts electrophilic polymerization in the presence of N- methylpyrrolidone(NMP)with AlCl_3 as catalyst.The polymers were characterized by IR,X —ray,SEM,DSC,TG and solvent resistance experiment.It is found that five PEEKKS are non—crystalline.Inherent viscosity are over 0.85.They can be soluble in dipolar aprotic solvent,such as DMF,DMSO,NMP,HMPA and so on.They have lower melting tempera- tures and excellent thermostability.
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