Ong Chi Siang, Lay Huang Teik, Tamilselvam Navin Raj, Chew Jia Wei
School of Chemical and Biomedical Engineering, Nanyang Technological University, 62 Nanyang Drive, 637459, Singapore.
Singapore Membrane Technology Centre, Nanyang Environmental and Water Research Institute, Nanyang Technological University, 637141, Singapore.
Langmuir. 2021 Apr 6;37(13):4025-4032. doi: 10.1021/acs.langmuir.1c00383. Epub 2021 Mar 24.
In this study, we report a facile preparation of an organic solvent-resistant membrane through the formation of urethane bonds between polycarbonate and polyethyleneimine groups. The modified membrane was further cross-linked with 1,4-butanediol diglycidyl ether (BDG) to enhance its solvent resistance as well as its thermal and mechanical stability. The cross-linked polycarbonate membranes exhibited improved solvent resistance with various organic solvents, giving a maximum swelling degree of 6%. It also showed better mechanical and thermal stability, as well as excellent permeance and rejection performance. This study demonstrates BDG as an attractive cross-linker for polycarbonate microfiltration membranes to transform them toward organic solvent filtration applications.
在本研究中，我们报道了一种通过聚碳酸酯与聚乙烯亚胺基团之间形成脲键来简便制备耐有机溶剂膜的方法。改性膜进一步与1,4 - 丁二醇二缩水甘油醚（BDG）交联，以提高其耐溶剂性以及热稳定性和机械稳定性。交联后的聚碳酸酯膜对各种有机溶剂表现出改善的耐溶剂性，最大溶胀度为6%。它还表现出更好的机械和热稳定性，以及优异的渗透通量和截留性能。本研究证明BDG是一种有吸引力的聚碳酸酯微滤膜交联剂，可将其转变为适用于有机溶剂过滤应用的膜。
