Non-laminated ion-exchange membranes

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F28676092%3A_____%2F17%3AN0000056" target="_blank" >RIV/28676092:_____/17:N0000056 - 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

Non-laminated ion-exchange membranes

Original language description

Presence of reinforcing fabric noticeably increases mechanical properties of ion-exchange membranes, but at the expense of difficult membrane manufacturing and higher cost. All non-laminated ion-exchange membranes have limited mechanical strength including higher dimension changes during swelling. Heterogeneous ion-exchange membranes are commonly made from low density polyethylen (LDPE) which is easy processable, but this LDPE cannot be used for non-laminated membranes due to extreme composite brittleness. Replacing LDPE by linear low density polyethylene (LLDPE) the non-laminated membranes become more elastic, but their mechanical properties are still poor and also their use is limited. Polypropylene (PP) generally has much higher mechanical strength, higher temperature resistance and lower creep behavior in comparison to LDPE or LLDPE. Due to immiscibility of PP with PE, their blends are limited only for composites with lower filler content. For increasing PP flexibility the propylene based elastomers (PBE) are very good alternative to PP/PE blends. Mechanical and electrochemical properties of anion exchange non-laminated membranes prepared from LDPE, LLDPE, polypropylene random copolymer (PPR), PBE and blend of PPR with PBE were compared in this article. Due to expected higher mechanical properties of PPR based composites, the non-laminated membranes were prepared also with increased ion-exchange resin content. It was proved that PPR based non-laminated membranes have higher tensile strength even for membranes with increased ion-exchange resin content. It was also proved that by increased PBE content, the elongation increases at the expense of decreasing modulus.

Czech name

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Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

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

Name of the periodical

Desalination and water treatment

ISSN

1944-3994

e-ISSN

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Volume of the periodical

75 (2017)

Issue of the periodical within the volume

05/2017

Country of publishing house

US - UNITED STATES

Number of pages

8

Pages from-to

368–375

UT code for WoS article

000404396100043

EID of the result in the Scopus database

2-s2.0-85021178930