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A. Kamińska

Flame retardants

Polimery 1980, No 2, 47

DOI: dx.doi.org/10.14314/polimery.1980.047


Air permeability of polystyrene films prepared by cast­ing polymer solution on glass plates and evaporation of solvent has been determined. Films have been prepared from fractions of polystyrene of various molecular weight as well as from fraction mixtures exhibiting similar in­trinsic viscosity but different polydispersity. It has been found that both molecular weight and polydispersity of mo­lecular weight have a big influence on air permeability. The higher the molecular weight and the broader the mo­lecular weight distribution, the higher is the air permeabi­lity of films.


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