Membrane PVC Composition % Plasticizer NBPP Additive Slope/mV decade-1)
1 60 2,NaTFPB --------- 2,KTClPB 12.5 ± 0.2 mV
2 60 2,NaTFPB --------- 2,KTClPB 28.4 ± 0.2 mV
3 60 2,NaTFPB   0.8 4,KTClPB 14.6 ± 0.2 mV
4 60 4,NaTFPB 1.2 4,KTClPB 9.8 ± 0.2 mV
5 60 2,NaTFPB 1.6 3,KTClPB 12.4 ± 0.2 mV
Table 2: Optimization of membrane ingredients.