Evaluation of properties of heterogeneous ion exchange membrane according to the processing time

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F28676092%3A_____%2F19%3AN0000106" target="_blank" >RIV/28676092:_____/19:N0000106 - isvavai.cz</a>

Výsledek na webu

<a href="http://sschi.chtf.stuba.sk/ssche_conference2019.html" target="_blank" >http://sschi.chtf.stuba.sk/ssche_conference2019.html</a>

DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Evaluation of properties of heterogeneous ion exchange membrane according to the processing time

Popis výsledku v původním jazyce

This work focused on possibility of thermal degradation during preparation of heterogeneous anion exchange membranes (AEMs) by extrusion. For AEMs preparation, strong base anion exchange resin (AER) based on styrene-divinylbenzene with trimethyl ammonium functional groups was used. AER was blended with low density polyethylene (LDPE) or propylene-ethylene random copolymer (PPR) matrix using laboratory twin screw extruder. Course of extrusion during repeated homogenisation was monitored by torque and pressure. By multiple extrusions (up to 10 cycles) different processing time of anion exchange blends was obtained. AEMs were subjected to determination of ion exchange capacity (IEC), permselectivity, area and specific resistance. Only the resistance determination was able to expose the probable AER degradation. Resistance of AEMs based on PPR was independent upon the number of homogenisation cycles under chosen conditions. Contrary, AEMs based on LDPE prepared from pellets taken after 10th homogenisation cycle showed increase of area and specific resistance by 80 and 92%, respectively.

Název v anglickém jazyce

Evaluation of properties of heterogeneous ion exchange membrane according to the processing time

Popis výsledku anglicky

This work focused on possibility of thermal degradation during preparation of heterogeneous anion exchange membranes (AEMs) by extrusion. For AEMs preparation, strong base anion exchange resin (AER) based on styrene-divinylbenzene with trimethyl ammonium functional groups was used. AER was blended with low density polyethylene (LDPE) or propylene-ethylene random copolymer (PPR) matrix using laboratory twin screw extruder. Course of extrusion during repeated homogenisation was monitored by torque and pressure. By multiple extrusions (up to 10 cycles) different processing time of anion exchange blends was obtained. AEMs were subjected to determination of ion exchange capacity (IEC), permselectivity, area and specific resistance. Only the resistance determination was able to expose the probable AER degradation. Resistance of AEMs based on PPR was independent upon the number of homogenisation cycles under chosen conditions. Contrary, AEMs based on LDPE prepared from pellets taken after 10th homogenisation cycle showed increase of area and specific resistance by 80 and 92%, respectively.

Druh

D - Stať ve sborníku

CEP obor

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OECD FORD obor

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

Projekt

<a href="/cs/project/LO1418" target="_blank" >LO1418: Progresivní rozvoj Membránového inovačního centra</a><br>

Návaznosti

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

Rok uplatnění

2019

Kód důvěrnosti údajů

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

Název statě ve sborníku

Proceedings of 46th Conference of SSCHE

ISBN

978-80-8208-011-0

ISSN

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e-ISSN

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Počet stran výsledku

7

Strana od-do

38

Název nakladatele

Slovak Society of Chemical Engineering

Místo vydání

Bratislava

Místo konání akce

Tatranské Matliare, Slovenská Republika

Datum konání akce

20. 5. 2019

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

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