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From: Rigid-flexible coupling poly (phenylene sulfide) fiber membrane: a highly stable chemical and thermal material for energy and environmental applications

Rigid-flexible coupling poly (phenylene sulfide) fiber membrane: a highly stable chemical and thermal material for energy and environmental applications

Figure 8. (A) PM2.5 filtration efficiency of the PPS/PPTA-70% ultrafine fiber felt before and after heat treatment at 230 °C for 48 h. (B) PM2.5 filtrati on efficiency of the PPS/PPTA-70% ultrafine fiber felt before and after acid treatment. (C) PM2.5 filtration efficiency of the PPS/PPTA-70% ultrafine fiber felt before and after alkali treatment^[101]. Schematic diagram of the composite mechanism of the (D) original ePTFE/PPS; (E) ePTFE/PA/PPS; (F) ePTFE/PVA/PPS; and (G) ePTFE/PAN/PPS composite filter. Comparisons of residual pressure drop ΔP_R^[102]. (H) and dedusting rate η (I) between PPS-based NWNFs and M-PPSF-Ss in the field test^[103].