The high barrier is, without doubt, a highly required property of polymeric materials intended used in many packaging purposes.
The high barrier usually refers to the very low permeability of material like gases and vapors. But, this property has perhaps never attracted so much attention from industry as over the last decades, when it began to be pursued by some modern food and beverage packaging technologies making use of plastic materials.
In this respect, the high barrier has attracted a great deal of recent attention from industry as it has become associated with primary objectives such as commercialization of perishable foods far away from their origin, food shelf- life extension and maintaining food quality and safety. Furthermore, it has also become very relevant to some other applications including gas separation membranes, packaging of healthcare products, pharmaceuticals and chemicals, and housing of fuels and oxygenated fuels in fuel tanks and lines in the automotive field.