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Effect Of Lamellar Microstructure On The Permeability Of Polyethylene Films, Yufu Li
Effect Of Lamellar Microstructure On The Permeability Of Polyethylene Films, Yufu Li
Theses
Lamellar microstructures can decrease the permeability to gases and vapors by increasing the diffusive path in plastic films, or the so-called "tortuosity" which depends on the aspect ratio, orientation, and the volume fraction of the dispersed material. In this research, different types and percentages of mica with relatively high aspect ratio are used as oxygen barrier materials in blown films. Both high and low density polyethylenes (HDPE and LDPE), as well as their blends are used as the matrix materials.
A decrease in permeability of both LDPE and HDPE films to oxygen is achieved with increasing volume fraction of the …