On July 1, 2020, Liao, Junbin; Chen, Quan; Pan, Nengxiu; Yu, Xinyan; Gao, Xing; Shen, Jiangnan; Gao, Congjie published an article.Quality Control of 4,4′-Sulfonylbis(chlorobenzene) The title of the article was Amphoteric blend ion-exchange membranes for separating monovalent and bivalent anions in electrodialysis. And the article contained the following:
It is of significant importance to develop highly monovalent anion-selective membranes (MASM) having stable structure for a wide range of applications. To realize the efficient monovalent/bivalent anion separation, in this work, three amphoteric ion-exchange membranes (AIEMs) through blending were fabricated for use in electrodialysis (ED). The three membranes were prepared by blending amino-containing poly(arylene ether sulfone) (PAES-NH2) with 10, 15, and 20 wt% of sulfonated polysulfone (SPSf), resp., followed by grafting imidazolium salt-terminated side alkyl chains on PAES backbone. Our investigations demonstrate that each transparent AIEM shows good miscibility between the two components, which has been verified by a homogeneous structure via SEM observation and by an even distribution of N element via EDX mapping. In the ED process at a c.d. of 2.5 mA cm-2, AIEM with 15 wt% of SPSf shows the superior perm-selectivity (Cl-/SO-24) of 21.8, relative to many reported MASMs having modified surfaces (<6.0), which is synergistically contributed by (i) electrostatic repulsion difference from the neg.-charged sulfonate groups against monovalent Cl- ions and bivalent SO-24 ions and (ii) hydrated energy difference of hydrated Cl-/SO-24 ions. This work thus presents a strategy to guide the architectural design of advanced MASMs. The experimental process involved the reaction of 4,4'-Sulfonylbis(chlorobenzene)(cas: 80-07-9).Quality Control of 4,4′-Sulfonylbis(chlorobenzene)
The Article related to amphoteric polysulfone blend anion exchange membrane, electrodialysis monovalent bivalent ion separation, Plastics Fabrication and Uses: Plastic Product Uses and other aspects.Quality Control of 4,4′-Sulfonylbis(chlorobenzene)
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