Reconstructing polyamide with nucleophilic catalyst for enhancing reverse osmosis membrane performance was written by Wu, Haowen;Liu, Yingying;Wang, Chong;Li, Xu;Wang, Zhi;Wang, Jixiao. And the article was included in Desalination in 2022.Related Products of 111-46-6 This article mentions the following:
In this work, the permselectivity of PA RO membrane was significantly improved by treating the PA layer with 4-dimethylaminopyridine (DMAP) aqueous solution With the assistance of DMAP, more residues in PA layer released during water soaking, unblocking the water channel in the PA layer. DMAP could also catalyze the reaction between the low activity amino groups and acyl chloride groups in PA, thereby reconstructing the resultant PA layer of RO membranes, generating a highly hydrophilic and neg. charged neonatal PA layer in-situ, and enhancing PA main part crosslinking. These factors were beneficial to membrane permselectivity. Consequently, the selectivity of the DMAP modified membrane could be increased by 62% at most (21594) with a 90% increase in permeance (3.37 L.m-2.h-1.bar-1) compared with those of the virgin membrane (13,294, 1.78 L.m-2.h-1.bar-1). This work provides a facile and low-cost strategy for preparing advanced RO membrane with outstanding permselectivity, exhibiting the potential for industrial application. In the experiment, the researchers used many compounds, for example, 2,2′-Oxybis(ethan-1-ol) (cas: 111-46-6Related Products of 111-46-6).
2,2′-Oxybis(ethan-1-ol) (cas: 111-46-6) belongs to alcohols. Because alcohols are easily synthesized and easily transformed into other compounds, they serve as important intermediates in organic synthesis. Under carefully controlled conditions, simple alcohols can undergo intermolecular dehydration to give ethers. This reaction is effective only with methanol, ethanol, and other simple primary alcohols.Related Products of 111-46-6
Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts