Polyelectrolytes based on self-crosslinking latexes and thier use as ion exchange membranes

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F28676092%3A_____%2F17%3AN0000047" target="_blank" >RIV/28676092:_____/17:N0000047 - isvavai.cz</a>

Result on the web

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DOI - Digital Object Identifier

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Result language

angličtina

Original language name

Polyelectrolytes based on self-crosslinking latexes and thier use as ion exchange membranes

Original language description

At present, most commercially available ion exchange heterogeneous membranes are made from an ion exchange resin and a polymeric binder, typically polyethylene or polypropylene. The production technology of these membranes, however, requires a demanding instrumentation and leads to the degradation of ion exchange groups due to the increased temperatures and pressures during processing. These disadvantages can be easily eliminated in the case of an unusually technology of producing ion exchange resin heterogeneous membranes based on latex binder, which consists in mixing the latex and the ion exchange resin, casting the mixture into forms, and drying membranes at room temperature. The subject of the thesis was the study of the self-crosslinking styrene-n-butyl acrylate polyelectrolytes as alternative binder materials suitable for preparation of cation exchange homogeneous and heterogeneous membranes. The influence of the chemical composition on the content of acrylic or methacrylic acid was monitored on the electrochemical, separation and physico-mechanical properties of the membranes. Also, in the case of heterogeneous ion exchange membranes, the optimal ratio of the latex and commercial cation exchange resin was sought. It has been shown that the increasing content of acrylic and methacrylic acid has led to a significant increase in the ion exchange capacity of cation exchange homogeneous membranes to the detriment of their dimensional and mechanical stability in water. In the case of cation exchange heterogeneous membranes, it was found that at the commercial cation exchange resin content of 45 and 60 wt%, excellent electrochemical properties have been achieved in terms of ion exchange capacity, areal and specific resistance in almost all types of latex binders. Although the prepared heterogeneous membranes had lower permselectivity and dimensional stability compared to Ralex® commercial membranes, polyelectrolytes based on self-crosslinking latexes appear to be promising connective materials for the technologically unproductive production of ion exchange heterogeneous membranes.

Czech name

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Czech description

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Type

D - Article in proceedings

CEP classification

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OECD FORD branch

20505 - Composites (including laminates, reinforced plastics, cermets, combined natural and synthetic fibre fabrics; filled composites)

Project

<a href="/en/project/LO1418" target="_blank" >LO1418: Progressive development of the Membrane Innovation Centre</a><br>

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year

2017

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Article name in the collection

Workshop of Students’ Presentations 2017, Membranes and Membrane Processes

ISBN

978-80-906831-0-5

ISSN

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e-ISSN

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Number of pages

6

Pages from-to

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Publisher name

Czech membrane Platform

Place of publication

Česká Lípa

Event location

Stráž pod Ralskem

Event date

Oct 18, 2017

Type of event by nationality

WRD - Celosvětová akce

UT code for WoS article

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