Preparation and Performance of PEI-EPTAC Surface Modified Nanofiltration Membranes

This study focuses on the preparation and performance evaluation of nanofiltration membranes modified with polyethyleneimine (PEI) and epichlorohydrin-triallyl cyanurate (EPTAC). The research explores the impact of surface modification on the membrane's permeability, selectivity, and antifouling properties. The PEI-EPTAC modification strategy aims to enhance the hydrophilicity and negative charge density of the membrane surface, leading to improved water permeability and antifouling resistance. The study investigates the effects of different PEI-EPTAC concentrations on membrane performance, analyzing the relationship between surface chemistry, membrane structure, and filtration characteristics. The results demonstrate the successful surface modification of nanofiltration membranes using PEI-EPTAC, leading to improved performance in terms of water flux, salt rejection, and fouling resistance. The findings provide valuable insights into the development of advanced nanofiltration membranes for various applications, including water purification, desalination, and wastewater treatment.