Swelling induced structural changes of a heterogeneous cation-exchange membrane analyzed by micro-computed tomography

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F49777513%3A23640%2F17%3A43931272" target="_blank" >RIV/49777513:23640/17:43931272 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/60461373:22340/17:43914189

Výsledek na webu

<a href="http://dx.doi.org/10.1016/j.memsci.2016.10.046" target="_blank" >http://dx.doi.org/10.1016/j.memsci.2016.10.046</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.memsci.2016.10.046" target="_blank" >10.1016/j.memsci.2016.10.046</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Swelling induced structural changes of a heterogeneous cation-exchange membrane analyzed by micro-computed tomography

Popis výsledku v původním jazyce

3D reconstruction of heterogeneous ion-exchange membranes when swollen in an appropriate electrolyte by micro-computed tomography (μ-CT) can provide important information on structural changes caused by their swelling or shrinkage and used this knowledge along with their electrochemical characteristics for optimization of the structure of these industrially important polymeric composites. We developed a methodology that allows scanning of swollen membrane samples while not being immersed in the solution, a condition necessary for μ- CT analysis of polymeric samples. Qualitative description of membrane swelling and shrinkage induced by volume-changing ion-exchange resin particles demonstrates their strong effect on structural changes in the membrane and identifies salt concentration as one of the major factors affecting the extent to which the membrane swells or shrinks. Experimental study focused on investigating the effect of salt concentration reveals that membrane volume decreases with increasing salt concentration. The dependence between the volume of the membrane and the concentration was well fitted with a natural logarithm. This fit can be used as an empirical equation for estimating the volumetric changes of the membrane caused by immersion in salt solutions of different concentrations.

Název v anglickém jazyce

Swelling induced structural changes of a heterogeneous cation-exchange membrane analyzed by micro-computed tomography

Popis výsledku anglicky

3D reconstruction of heterogeneous ion-exchange membranes when swollen in an appropriate electrolyte by micro-computed tomography (μ-CT) can provide important information on structural changes caused by their swelling or shrinkage and used this knowledge along with their electrochemical characteristics for optimization of the structure of these industrially important polymeric composites. We developed a methodology that allows scanning of swollen membrane samples while not being immersed in the solution, a condition necessary for μ- CT analysis of polymeric samples. Qualitative description of membrane swelling and shrinkage induced by volume-changing ion-exchange resin particles demonstrates their strong effect on structural changes in the membrane and identifies salt concentration as one of the major factors affecting the extent to which the membrane swells or shrinks. Experimental study focused on investigating the effect of salt concentration reveals that membrane volume decreases with increasing salt concentration. The dependence between the volume of the membrane and the concentration was well fitted with a natural logarithm. This fit can be used as an empirical equation for estimating the volumetric changes of the membrane caused by immersion in salt solutions of different concentrations.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

20401 - Chemical engineering (plants, products)

Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

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

Rok uplatnění

2017

Kód důvěrnosti údajů

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

Název periodika

JOURNAL OF MEMBRANE SCIENCE

ISSN

0376-7388

e-ISSN

—

Svazek periodika

525

Číslo periodika v rámci svazku

MAR 1 2017

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

7

Strana od-do

195-201

Kód UT WoS článku

000392558000021

EID výsledku v databázi Scopus

2-s2.0-85007207151