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(A) Diagram of FilterLayrTM structure: spunbonded polypropylene/PMMA–EVOH electrospun nanofibre/spunbonded polypropylene (SPP/PMMA–EVOH/SPP). (B) Macroscopic image of SPP/PMMA–EVOH/SPP structure. (C) Nanofibre layer in FilterLayrTM. (D) SEM micrograph of nanofibre layer made from a blend of PMMA and EVOH. (E) Average fibre distribution of PMMA–EVOH electrospun fibres using Fibraquant image analysis software.
