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FE-SEM images (A), mechanical strength (B) and contact angles (C) of MPEG/PA-6 fibrous membranes containing different amounts of MPEG oligomer: (a) 0, (b) 1 wt%, (c) 2 wt% and (d) 4 wt%. Reprinted with permission from [107]. © 2010 Elsevier B.V.
