A terpolymer PAMA was synthesized via emulsion polymerization with monomers of acrylonitrile(AN)

methyl methacrylate(MMA)

and acrolein(A)．The terpolymer PAMA was blended with poly(vinylidene fluoride-hexafiuoroylene) (PVDF-HFP)

and nanometer SiO2 was added to the system．The micmpomus film was prepared by phase-immersion technique．SEM

adoption

thermal properties were used to characterize the fihns

and conduction properties were investigated The studies showed that the addition of SiO2 increased the pore volume

benefited the pore distribution and enhanced the uptake of liquid electrolyte；the composition of terpolymer PAMA

mainly the units of acrolein and acrylonitrile

affected the properties of the films significantly；the uptake of liquid electrolyte increased with increasing PAMA content The ionic conductivity of the polymer electrolytes reached 2.30×10-4s/cm.