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Permeability can also be calculated by the formula _____________

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in Food Packaging Technology by (63.0k points)
Permeability can also be calculated by the formula _____________

(a) P=Qk/(AtΔP)

(b) P=Qt/(AkΔP)

(c) P=Q/(AktΔP)

(d) P=QA/(ktΔP)

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This interesting question is from Diffusivity and Permeability in Plastics topic in section Thermoplastic Polymers Properties & Processing of Food Packaging Technology

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The correct choice is (a) P=Qk/(AtΔP)

Best explanation: Permeability can also be calculated by the formula- P=Qk/(AtΔP). Where, P:Permeability, Q:Quantity of permeant, k:thickness, A:area, t:time, ΔP: pressure drop across polymer. Permeability is directly proportional to Quantity of permeant and thickness and inversely proportional to area, time and pressure difference.

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