Chitosan water vapor transmission rate

Chitosan has also been used as reinforcement in nanocomposites. Chitosan nanoparticles were used by Kampeerapappun et al. [204] to produce bionanocomposites with cassava starch and MMT nanocomposites. The authors reported that the addition of chitosan, due to its hydrophilicity and ability to attach to the clay surface, played a role in compatibilizing the interface between starch matrix and MMT. As a result, the starch/MMT composite film at low MMT content exhibited an improvement in tensile properties due to a reinforcement effect It was also found that the surface hydrophobicity of the composite film increased with an increase in chitosan content In association with film hydrophobicity, the water vapor transmission rate and moisture absorption were found to decrease with an increase in chitosan content. 

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