An economical and simple method for preparing highly permeable and chlorine-resistant reverse osmosis membranes with potential commercial applications.

ABSTRACT: The improvement in the overall efficiency of thin-film composite (TFC) reverse osmosis (RO) membranes is limited by their low permeability and sensitivity to degradation by chlorine. In the present study, polypiperazine (PIP), the commonly used amine monomer in preparing commercial TFC nanofiltration (NF) membranes, was used to regulate the m-phenylenediamine (MPD) based interfacial polymerization (IP) process. The results showed that addition of PIP optimized the micro-structure and surface properties of the polyamide (PA) layer. When the MPD and PIP mass ratio was 1 : 1, the TFC_W-1:1 membrane exhibited 70% flux enhancement compared to pure MPD-based TFC_W-1:0 membranes. Besides, the TFC_W-1:1 membrane exhibited better chlorine-resistant performance s

SUBMITTER: Sun J 

PROVIDER: S-EPMC10618943 | biostudies-literature | 2023 Oct

REPOSITORIES: biostudies-literature