Question

Permeability can be related to which law of Food Engineering?

(a) Fourier Law

(b) Kohlrausch’s Law

(c) Fick’s Law

(d) Newton’s Law

The question was posed to me in my homework.

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

Answer 1

The correct option is (c) Fick’s Law

For explanation I would say: Permeability can be related to Fick’s law of diffusivity. It relates the diffusion flux (J) to the steepness of concentration gradient, where D is diffusion coefficient, C is concentration and x is the distance. It is given by the formula: J = -δC/δx.