Effect of amine modification on the ultrafiltration performance of polyvinylchloride (PVC) membranes

Polyvinyl chloride (PVC) is successfully modified by nucleophilic substitution reactions withethylenediamine (EDA) and ۱,۴-diaminobutane (DAB). Ultrafiltration (UF) membranes prepared vianon-solvent induced phase separation (NIPS) with the modified PVCs exhibited a smaller and moreuniform pore size distribution and improved permeate water flux (PWF) and solute rejectioncompared to those prepared with pristine PVC. In particular, EDA, which has a shorter alkyl linkerthan DAB, led to better separation performance among the PVC membranes.

کلیدواژه ها:

Ultrafiltration ، poly (vinyl chloride) ، ethylene diamine ، diamino butane ، nucleophilicsubstitution.