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Morphology, structure, fiber diameter, and pore size of melt-blown nonwovens. SEM images of melt-blown nonwovens after various heat treatment conditions: (a) untreated sample, (b) 110 °C-24 h, and (c) 110 °C-24 h-90%. (d) Thickness and basic weight, (e) fiber average diameter, and (f) pore size distribution curves.
