HYDROPHILIC POROUS POLYTETRAFLUOROETHYLENE MEMBRANE (II)

摘要

Disclosed are hydrophilic porous PTFE membranes comprising PTFE and an amphiphilic copolymer of the formula (I):;;wherein Rf, Rh1, Rh2, Y, m, n, and o are as described herein. Also disclosed are a method of preparing hydrophilic porous PTFE membranes and a method of filtering fluids through such membranes.

主权项

1. A hydrophilic porous membrane comprising polytetrafluoroethylene (PTFE) and an amphiphilic copolymer of formula (I): wherein the amphiphilic copolymer is a random or block copolymer, Rf is a perfluoro-substituted group, whereas Rh1 and Rh2 are hydrophilic groups or chlorine, m and n are independently from 0 to 1000, provided m+n+o is greater than or equal to 10, and Y is hydroxyl.