Barrier property is commonly in connection with particular permeable objects, which include common gases, water vapor, liquid and organic substance, etc. it refers to the property of material when specified permeable object transmits from one side to the other (from high density side into low density side). The whole transmitting process includes adsorption, dissolution, diffusion, and desorption. Gases or water vapor enter the surface of materials from higher density side. After diffusing inside material, it desorbs on the low-density side
The speed of the permeation process depends on two factors. One is the speed of solution in polymer materials, i.e., solubility parameter. The other is the travel rate of permeable molecules inside the base of polymer, which is indicated by diffusion coefficient.
Barrier property is commonly in connection with particular permeable objects, which include common gases, water vapor, liquid and organic substance, etc. it refers to the property of material when specified permeable object transmits from one side to the other (from high density side into low density side). The whole transmitting process includes adsorption, dissolution, diffusion, and desorption. Gases or water vapor enter the surface of materials from higher density side. After diffusing inside material, it desorbs on the low-density sideThe speed of the permeation process depends on two factors. One is the speed of solution in polymer materials, i.e., solubility parameter. The other is the travel rate of permeable molecules inside the base of polymer, which is indicated by diffusion coefficient.
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