Abstract
This chapter critically examines the most significant literature on the gas and water vapor (WV) barrier properties of environmentally friendly polymer nanocomposites (EFPNCs) and attempts to relate the experimental results with the morphology of these materials. The water swelling behavior of EFPNCs is also summarized. Dispersed nanoparticles, particularly clay platelets, have demonstrated an ability to improve the gas and WV barrier properties of neat biodegradable polymer matrices through the formation of tortuous paths, significantly reducing the diffusivity of gases and vapor through the nanocomposites.
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