Fig. 14From: Recent trends in therapeutic application of engineered blood purification materials for kidney diseasea Schematic representation of PES/f-MWCNT/PVP nano-hybrid membrane. b Cross-sectional and surface SEM micrograph of PES and PES nano-hybrid HD membranes. Memb. 2A and 5B represent surface topology of membrane 2 and 5. In Memb. 2A, black spots indicate the presence of FMWCNT. Reproduced with permission [87]. Copyright 2014, ElsevierBack to article page