Non-laminated ion-exchange membranes

Kód výsledku v 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>

Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Non-laminated ion-exchange membranes

Popis výsledku v původním jazyce

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.

Název v anglickém jazyce

Non-laminated ion-exchange membranes

Popis výsledku anglicky

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.

Druh

J_imp - Článek v periodiku v databázi Web of Science

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

2017

Kód důvěrnosti údajů

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

Název periodika

Desalination and water treatment

ISSN

1944-3994

e-ISSN

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Svazek periodika

75 (2017)

Číslo periodika v rámci svazku

05/2017

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

8

Strana od-do

368–375

Kód UT WoS článku

000404396100043

EID výsledku v databázi Scopus

2-s2.0-85021178930