loading page

Polyamide nanofilms through a non-isothermal-controlled interfacial polymerization: “Kill three birds with one stone”
  • +7
  • Guangjin Zhao,
  • Haiqi Gao,
  • Zhi-Jian Zhao,
  • Lulu Liu,
  • Zifan Pang,
  • Chunlei Pei,
  • Zhou Qu,
  • Liangliang Dong,
  • Juergen Caro,
  • Hong Meng
Guangjin Zhao
Beijing University of Chemical Technology
Author Profile
Haiqi Gao
Xinjiang University
Author Profile
Zhi-Jian Zhao
Tianjin University
Author Profile
Lulu Liu
Tianjin University
Author Profile
Zifan Pang
Tianjin University
Author Profile
Chunlei Pei
Tianjin University
Author Profile
Zhou Qu
Beijing University of Chemical Technology
Author Profile
Liangliang Dong
Jiangnan University

Corresponding Author:[email protected]

Author Profile
Juergen Caro
Leibnniz University
Author Profile
Hong Meng
Xinjiang University
Author Profile

Abstract

Efficient thin film composite polyamide (PA) membranes require optimization of interfacial polymerization (IP) process. However, it is challengeable because of its ultrafast reaction rate coupling with mass and heat transfer, resulting in PA membranes with low performance. Here, we propose a non-isothermal-controlled IP strategy to fabricate highly permeable and selective PA membrane by engineering the IP process at cryogenic aqueous phase (CAP). In this strategy, CAP allows the phase transition of aqueous solution from liquid to solid state, which not only achieves synchronous control of heat and mass transfer in interfacial region but also enriches understanding of the mechanisms involved different phase state on IP process. Our PA membrane exhibits excellent separation performance with ultrahigh water permeance (42.9 L m-2 h-1 bar-1) and antibiotic desalination efficiency (antibiotic/NaCl selectivity of 159.3). Our study provides a new dimension for deep understanding of exact mechanism linking the IP to the targeting membrane performance.