Organic vapour permeation in amorphous and semi-crystalline rubbery membranes: Experimental data versus prediction by solubility parameters.

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985858%3A_____%2F21%3A00540789" target="_blank" >RIV/67985858:_____/21:00540789 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/44555601:13440/21:43896177

Výsledek na webu

<a href="http://hdl.handle.net/11104/0318605" target="_blank" >http://hdl.handle.net/11104/0318605</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.memsci.2021.119211" target="_blank" >10.1016/j.memsci.2021.119211</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Organic vapour permeation in amorphous and semi-crystalline rubbery membranes: Experimental data versus prediction by solubility parameters.

Popis výsledku v původním jazyce

The applicability of Hansen and Hoftyzer and van Krevelen solubility parameters for the prediction of potential VOC/N2 separation efficiency was analysed with both new experiments and literature data. It was found that Hansen solubility parameters can be successfully applied for the prediction of permeability order of some types of organic compounds VOC. The results show limited predictability of solubility parameters for a cyclic hydrocarbon. The principle was tested with the low-permeable polyethylene representing an organophilic membrane material with very similar Hansen solubility parameters as polydimethylsiloxane (PDMS). PDMS was selected as a commercially used membrane material in VOC/N2 separation with high permeability, above 20 500 Barrer for hexane, 13 500 Barrer for cyclohexane, 12 900 Barrer for 2,2,4-trimethylpentane and 11 100 Barrer for ethanol vapours, respectively. The analysis was extended to two polyether-polyamide block-copolymers (Pebax® 2533 and Pebax® 1657) to cover different polymeric materials in the whole Hansen database. The analysis showed a deviating trend for Pebax® 2533, caused by its anisotropic microstructure, in which the transport is dominated by the flexible poly (tetramethylene oxide) phase. This suggests the need for a revised model, including parameters that describe the microstructure for this type of copolymer. Further tuning of the model is needed to improve the predictions for cyclic and aromatic compounds, for instance by introducing properties that correlate with diffusivity.

Název v anglickém jazyce

Organic vapour permeation in amorphous and semi-crystalline rubbery membranes: Experimental data versus prediction by solubility parameters.

Popis výsledku anglicky

The applicability of Hansen and Hoftyzer and van Krevelen solubility parameters for the prediction of potential VOC/N2 separation efficiency was analysed with both new experiments and literature data. It was found that Hansen solubility parameters can be successfully applied for the prediction of permeability order of some types of organic compounds VOC. The results show limited predictability of solubility parameters for a cyclic hydrocarbon. The principle was tested with the low-permeable polyethylene representing an organophilic membrane material with very similar Hansen solubility parameters as polydimethylsiloxane (PDMS). PDMS was selected as a commercially used membrane material in VOC/N2 separation with high permeability, above 20 500 Barrer for hexane, 13 500 Barrer for cyclohexane, 12 900 Barrer for 2,2,4-trimethylpentane and 11 100 Barrer for ethanol vapours, respectively. The analysis was extended to two polyether-polyamide block-copolymers (Pebax® 2533 and Pebax® 1657) to cover different polymeric materials in the whole Hansen database. The analysis showed a deviating trend for Pebax® 2533, caused by its anisotropic microstructure, in which the transport is dominated by the flexible poly (tetramethylene oxide) phase. This suggests the need for a revised model, including parameters that describe the microstructure for this type of copolymer. Further tuning of the model is needed to improve the predictions for cyclic and aromatic compounds, for instance by introducing properties that correlate with diffusivity.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

20402 - Chemical process engineering

Projekt

<a href="/cs/project/GJ17-03367Y" target="_blank" >GJ17-03367Y: Membránová separace benzínových par ze vzduchu a její optimalizace</a><br>

Návaznosti

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

Rok uplatnění

2021

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

1873-3123

Svazek periodika

627

Číslo periodika v rámci svazku

1 June

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

13

Strana od-do

119211

Kód UT WoS článku

000639349900002

EID výsledku v databázi Scopus

2-s2.0-85102434602