SEPARATION MEMBRANE, SHEET CHANNEL MATERIAL, AND SEPARATION MEMBRANE ELEMENT

摘要

The present invention provides a separation membrane and a separation membrane element which exhibit satisfactory fresh-water production performance even under high-temperature conditions and are excellent in terms of handleability and quality. This separation membrane comprises a separation-membrane main body having a feed-side surface and a permeate-side surface and, tenaciously bonded to the permeate-side surface of the separation-membrane main body, a permeate-side channel material, which comprises polypropylene as a main component and satisfies the following requirements (a) to (c): (a) to have a softening point of 60°C or higher; (b) to have a tensile elongation in the normal state of 10% or higher; and (c) to have a yield stress under 50°C wet conditions of 2 MPa or greater.