Analysis of heterogeneous ion-exchange membranes by micro computed tomography

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60461373%3A22340%2F16%3A43902371" target="_blank" >RIV/60461373:22340/16:43902371 - 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

Analysis of heterogeneous ion-exchange membranes by micro computed tomography

Original language description

Heterogeneous ion-exchange membranes are a type of ion-exchange medium that incorporates several functional components. These components are ion-exchange resin particles, polymeric binder and polymeric fibers. Each of the components provides either required functionality or mechanical support so that the membranes can be efficiently used in industrial electroseparation units. One usually prepares such membranes by blending finely ground resin particles and polymeric pellets followed by their heating and laminating in between two layers of polymeric fibers. This technology enables high-scale production of these membranes, however their structure is entirely random without any option for its control. To study the effect of surface and volume heterogeneities of these membranes on their behavior and performance, we started to analyze small samples of membranes by micro computed tomography (?CT). ?CT is a technique that uses X-rays to "look inside" materials and nontransparent systems. In case there are multiple components (phases) present having different attenuation properties towards the transmitted X-ray, ?CT can yield complete structural analysis of investigated systems. In this work, we study heterogeneous ion-exchange membranes that are analyzed in dry and then swollen state when immersed in KCl solutions of various concentrations. First, segmentation of obtained raw data is carried out followed by the analysis of the actual composition of the membranes and related changes caused by the swelling or shrinking of the membranes in different KCl solutions. Later, this data will be added with electrochemical characteristics of previously analyzed membrane samples. The ultimate goal is to identify optimal structure of the membranes while retaining their high mechanical stability.

Czech name

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Czech description

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Type

D - Article in proceedings

CEP classification

CI - Industrial chemistry and chemical engineering

OECD FORD branch

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Project

<a href="/en/project/GJ15-10907Y" target="_blank" >GJ15-10907Y: The effect of surface heterogeneities of heterogeneous ion-exchange membranes on their behavior.</a><br>

Continuities

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

Publication year

2016

Confidentiality

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

Article name in the collection

Proceedings 43rd International Conference of the Slovak Society of Chemical Engineering

ISBN

978-80-89597-35-2

ISSN

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e-ISSN

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Number of pages

9

Pages from-to

700-708

Publisher name

Slovak Society of Chemical Engineering

Place of publication

Bratislava

Event location

Tatranské Matliare

Event date

May 23, 2016

Type of event by nationality

WRD - Celosvětová akce

UT code for WoS article

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