Mass transport and high barrier properties of food packaging polymers
F. Nilsson and M.S. Hedenqvist, Royal Institute of Technology, Sweden
Abstract:
Polymers are to various extents permeable towards gases and liquids. For proper material selection it is therefore important to be able to predict and assess their permeation properties in actual/realistic environments. This chapter deals with the basics of the transport properties of polymers and their barrier properties, with the fundamental equations of mass transport. The second and third parts describe the physics behind the two parameters governing the transport: solute diffusivity and solubility. Since the focus of this chapter is on the prediction of solubility, the diffusivity ...
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