Air permeability The impact of hydrogel concentration on air permeability is evident, with a clear trend: higher chitosan hydrogel concentrations lead to reduced air permeability across all nonwoven fabric types, as illustrated in Fig. 6 .
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Biomass derived banana/viscose nonwoven incorporated with chitosan hydrogel facial mask for sensitive and dry skin.
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The ANOVA results indicate that hydrogel concentration has a highly significant effect on almost all measured properties.