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Effect of ambient temperature on the morphology of (a and b) gelatin/NaCl and (c and d) PA-66/BaCl2 NFN membranes. FE-SEM images of gelatin/NaCl NFN membranes obtained at ambient temperature: (a) 15 and (b) 25 °C. Reprinted with permission from [108]. © 2011 Elsevier B.V. FE-SEM images of PA-66/BaCl2 NFN membranes obtained at ambient temperature: (c) 25 and (d) 40 °C [218].
