The polyurethane (PU) membranes with temperature and pH double sensitivities for water permeation were designed and prepared from a two-step solution polymerization from the crystalline polycaprolactone diols (PCL), 4,4′-diphenylmethane diisocyanate (MDI) and pH-sensitive 2,2-dimethylol propionic acid (DMPA), etc. The structure and properties of PU membranes were characterized by differential scanning calorimetry meter, contact angle tester, mechanical tester, porosity tests, water flux tests, water absorption tests, etc. Results showed that a...
