Pervaporation membrane

Abstract

The present invention provides a pervaporation membrane suitable for inhibiting a separation functional layer from peeling off a porous support when the pervaporation membrane is drawn from a wound body of the pervaporation membrane. The pervaporation membrane of the present invention includes: a separation functional layer including a silicone resin; and a porous support supporting the separation functional layer. For the pervaporation membrane, a peeling strength measured by a test below is 0.15 N/20 mm or more. Test: The pervaporation membrane is cut to 20 mm in width and 150 mm in length to give a test piece. The separation functional layer of the test piece is peeled off the porous support of the test piece at a peel angle of 180° and a tensile speed of 300 mm/min.

Dependencies are inferred from the claim text.