STUDY ON THERMAL STABILITY OF PEKK AND SPEKK;

The sulfonated polyaryletherketoneketone(S PEKK) was synthesized from cross linked polyaryletherketoneketone with 20% fuming sulfuric acid, and then it was used as catalyst in esterification of fumaric acid and methyl alcohol.

The sulfonated polyaryletherketoneketone(S-PKKK) was synthesized from cross-linking polyaryletherketoneketone with 20% fuming sulphuric acid, and then it was use as catalyst in esterification of phenylacetic acid and β-phenethyl alcohol.

The sulfonated polyaryletherketoneketone was synthesized by reaction of crosslinking polyaryletherketoneketone with 20% fuming sulphuric acid as sulfonating agent and used to catalyze the reaction of malic anhydride with 2ethylhexyl alcohol.

Preparation of phosphotungstic acid/silica/sulfonated poly(ether ether ketone) composite membranes and its characterization and properties;

Preparation and characterization of poly(ether sulfone)/sulfonated poly(ether ether ketone) blend membranes;

Preparation, structure and performance of the sulfonated poly(ether ether ketone)/ α -zirconium phosphate composite membranes;

Preliminary Study of SPEEK Membranes for Direct Methanol Fuel Cells Application;

In this work, the conductivity and the methanol diffusion resistance of SPEEK-PEM were evaluated with the improved two-poles AC measurement device and the diffusion cell with the refractometer which were designed by us selves, respectively.

The sulfonated polyether ether ketone(sPEEK)/zirconium phosphate composite proton exchange membranes were prepared by a sol-gel process in which zirconium phosphates were formed in-situ in the organic solution.

Study on conductivity and mass transfer of blend membranesof sulfonated polyetheretherketone and polysulfone;

Sulfonated polyetheretherketone(SPEEK) with various degree of sulfonation(DS) was prepared by sulfonation of commercial Victrex~(D○R) PEEK.

On the basis of the retrospect on the development of the proton exchange membranes(PEM) made of sulfonated polyetheretherketone(SPEEK) used in the direct methanol fuel cell(DMF),the study progresses of the synthesis method of SPEEK,the sulfonation of polyetheretherketone(PEEK) for making SPEEK and the preparation technique of SPEEK proton exchange membranes are reviewed respectively.