Staff Publications

Staff Publications

  • external user (warningwarning)
  • Log in as
  • language uk
  • About

    'Staff publications' is the digital repository of Wageningen University & Research

    'Staff publications' contains references to publications authored by Wageningen University staff from 1976 onward.

    Publications authored by the staff of the Research Institutes are available from 1995 onwards.

    Full text documents are added when available. The database is updated daily and currently holds about 240,000 items, of which 72,000 in open access.

    We have a manual that explains all the features 

Record number 543259
Title Hybrid polyelectrolyte-anion exchange membrane and its interaction with phosphate
Author(s) Paltrinieri, Laura; Poltorak, Lukasz; Chu, Liangyong; Puts, Theo; Baak, Willem van; Sudhölter, Ernst J.R.; Smet, Louis C.P.M. de
Source Reactive and Functional Polymers 133 (2018). - ISSN 1381-5148 - p. 126 - 135.
DOI https://doi.org/10.1016/j.reactfunctpolym.2018.10.005
Department(s) Organic Chemistry
Publication type Refereed Article in a scientific journal
Publication year 2018
Keyword(s) Anion-exchange membrane - Electrodialysis - Interaction - Phosphate - Sulfate
Abstract

We have investigated in detail properties of hybrid polyelectrolyte-anion exchange membranes (AEMs) having different amounts of a guanidinium-modified poly(allylamine hydrochloride) (PAH-Gu) derivative (2, 5, and 8 wt%). The presence of guanidinium groups at the membrane surface was confirmed by XPS. For 2 and 5 wt% the blended membranes are homogeneous, while at 8 wt% segregation is observed by AFM. The membrane permselectivity and ionic electrical resistance for phosphate reduce upon incorporation of the PAH-Gu in the membrane, reflecting an increased co-ion (H+ and Na+) permeation. We conclude that PAH-Gu loaded in the AEM favors an interaction with phosphate. In electrodialysis, using sodium sulfate and sodium dihydrogen phosphate at equal concentrations in the source phase a slight preference for phosphate was observed. Our work shows that this facile membrane fabrication procedure shows great potential in terms of tuning the membrane properties. One way to boost selective ion transport could be by increasing the number of functional groups in the membrane.

Comments
There are no comments yet. You can post the first one!
Post a comment
 
Please log in to use this service. Login as Wageningen University & Research user or guest user in upper right hand corner of this page.