Figure 7.
(a) Schematic representation of the “tortuous path” model for nanocomposites. (b) Transmission electron micrograph (TEM) of PLA nanocomposite containing 3 wt.% of montmorillonite, showing aligned clay platelets. (c) Water vapor transmission rates (WVTR) of PLA nanocomposites as a function of wt. nanofillers for two different PLA grades [41], Reproduced with permission from Duan Z, J. Membrane Sci.; published by Elsevier, 2013.