Title of article :
Chlorinated PTMSP membranes: permeability, free volume and physical properties
Author/Authors :
Consolati، نويسنده , , G. and Pegoraro، نويسنده , , M. and Quasso، نويسنده , , F. and Severini، نويسنده , , F.، نويسنده ,
Issue Information :
دوهفته نامه با شماره پیاپی سال 2001
Abstract :
Permeability and positron annihilation measurements were carried out on PTMSP membranes, in the pristine structure, as well as in the modified polymer after chlorination. It is found that permeability decreases in the chlorinated films; this can be correlated to the microscopic free volume decrease as probed by positronium. Effect of ageing was also investigated.
Keywords :
Positron annihilation , Permeability , free volume
