The synthesis and structural characterization of a series of 2

6-dimethylnaphthalene-based novel heterocyclic poly(aryl ether ketone)s (3a~3d) were studied.These heterocyclic poly(aryl ether ketone)s (3a~3d) were synthesized by the NC coupling polymerization of 1

5-bis-(4'-fluorinebenzoyl)-2

6-dimethylnaphthalene (1) and bisphenol-like monomers (2a~2d).The structure of the polymers was characterized by FTIR and 1H-NMR

the properties of the polymers were investigated by DSC

TGA and GPC

and the solubility and inherent viscosities (inh) were also investigated.The results indicated that the polymers easily dissolved in aprotic polar organic solvents at room temperature

such as chloroform

DMAc

NMP

pyridine

m-cresol and so on

and the chloroform solution of these polymers could be cast into colorless

transparent and flexible fllms.The inherent viscosities (inh) of the polymers were in the range of 0.76~1.40 dL/g.The number average molecular weight (Mn) and polydispersity index (PDI) of polymers 3b~3d were in the range of 78000~104000 and 1.66~2.21

respectively.Moreover

the glass transition temperature (Tg) of the polymers were all above 280℃

and the residual weight were in the range of 53%~69% at 800℃ in nitrogen.The 5% and 10% weight loss temperatures of these polymers were in the range of 423~440℃ and 434~467℃ in nitrogen

respectively.