Matrimid dense layer

The borders between layers are better revealed by phase contrast and force modulation techniques, as shown in Figure 5.12. The corresponding thicknesses for the Matrimid dense layer are shown in Figure 5.13 as a function of the time of evaporation used in order to eliminate the solvent once phase inversion took place. 

Figure 5.13 also shows the corresponding thickness for the Matrimid dense layer as obtained from SEM. The thickness obtained by assuming that only the dense active layer of Matrimid has a significant resistance to the flux of gas according to... 

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