Gas barrier enhancement of uncharged apolar polymeric films by self-assembling stratified nano-composite films.

ABSTRACT: The gas (O₂ and CO₂) permeability of an innovative stratified PE-organoclay (LLDPE/OMMT) nano-enabled composite films was studied for the first time and related to the self-assembly process driven by hydrophobic interactions. An 84.4% and a 70% reduction (i.e. a barrier improvement factor of about 6, sufficient for food packaging applications) were observed respectively in the oxygen and carbon dioxide permeability of the 5 bilayers coated film compared to the substrate, while only incorporating 2.4 v/v% of organoclay in the composite and increasing the thickness by 17.7%. Such drastic effect with so low amount of organoclays cannot be achieved by conventional melt blending/exfoliation of the clays into the polymer matrix and is due to a geometrical blocking ef

SUBMITTER: Motedayen AA 

PROVIDER: S-EPMC9062643 | biostudies-literature | 2019 Apr

REPOSITORIES: biostudies-literature