POLYMER NANOCOMPOSITES FOR PACKAGING

摘要

Polymer nanocomposites based on dispersion of surfactant treated expandable smectite clays such as montmorillonite layered silicates (MLS) have shown promise as organic-inorganic hybrids with the potential to improve barrier properties. Separately, packaged products based on plastic substrates have reduced lifetimes tied to the low barrier properties. While there has been a general attribution of improved barrier properties to the tortuous path, this does not consider the influence of crystallization effects induced by the secondary filler on the morphology of the host polymer. The objective of this paper is to understand the different factors that affect the permeability in semicrystalline polymer nanocomposite beyond the traditionally explained by tortuosity factor in polymer nanocomposite.