Comparison of distinctive polymeric membrane structures as support materials for membrane extraction of chiral amines

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60461373%3A22340%2F25%3A43928937" target="_blank" >RIV/60461373:22340/25:43928937 - isvavai.cz</a>

Výsledek na webu

<a href="https://www.sciencedirect.com/science/article/pii/S1383586624019312" target="_blank" >https://www.sciencedirect.com/science/article/pii/S1383586624019312</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.seppur.2024.128192" target="_blank" >10.1016/j.seppur.2024.128192</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Comparison of distinctive polymeric membrane structures as support materials for membrane extraction of chiral amines

Popis výsledku v původním jazyce

This study investigates the synthesis and performance of polymeric membranes for their potential application in supported liquid membranes (SLM), using the extraction of -methylbenzylamine (MBA), 1-methyl-3-phenylpropylamine (MPPA), and isopropyl amine (IPA) as a reference. Three synthesis methods — phase inversion, electrospinning, and stretching — were evaluated, each impacting the membrane morphology differently. The polymer selection influenced porosity, wettability, and surface free energy with PTFE exhibiting the highest hydrophobicity. Membrane wettability was assessed using the ionic liquid [P6,6,6,14][N(Tf)2] as the selective extractant, revealing that larger pore sizes enhanced the impregnation efficiency, while reducing the final SLM stability. Solute fluxes and selectivity were quantified; electrospun membranes exhibited higher fluxes, ranging from 1.0 to 1.2 g/(m2h) for MBA, 2.1 to 2.2 g/(m2h) for MPPA, and 0.8 to 1.2 g/(m2h) for IPA, along with a higher selectivity compared to phase inversion membranes, with fluxes ranging from 0.2 to 0.3 g/(m2h) for MBA, 0.2 g/(m2h) for MPPA, and 0.3 to 0.4 g/(m2h) for IPA. Stretched membranes demonstrated a comparable selectivity (MBA/IPA = 2.2, MPPA/IPA = 3.9), but reduced fluxes with increasing pore size, decreasing from 2.7 to 0.5 g/(m2h) for MBA, 4.9 to 0.9 g/(m2h) for MPPA, and 1.2 to 0.3 g/(m2h) for IPA, as the nominal pore size increased from 50 to 450 nm. This phenomenon likely resulted from the improved impregnation efficiency, coupled with a lower porosity and larger thickness in the membranes with larger pores. Overall, the membrane morphology significantly influenced the SLM performance and stability, with homogeneous, porous membranes possessing smaller pore sizes and high hydrophobicity exhibiting optimal characteristics. These findings underscore the critical role of membrane structure and properties in SLM applications.

Název v anglickém jazyce

Comparison of distinctive polymeric membrane structures as support materials for membrane extraction of chiral amines

Popis výsledku anglicky

This study investigates the synthesis and performance of polymeric membranes for their potential application in supported liquid membranes (SLM), using the extraction of -methylbenzylamine (MBA), 1-methyl-3-phenylpropylamine (MPPA), and isopropyl amine (IPA) as a reference. Three synthesis methods — phase inversion, electrospinning, and stretching — were evaluated, each impacting the membrane morphology differently. The polymer selection influenced porosity, wettability, and surface free energy with PTFE exhibiting the highest hydrophobicity. Membrane wettability was assessed using the ionic liquid [P6,6,6,14][N(Tf)2] as the selective extractant, revealing that larger pore sizes enhanced the impregnation efficiency, while reducing the final SLM stability. Solute fluxes and selectivity were quantified; electrospun membranes exhibited higher fluxes, ranging from 1.0 to 1.2 g/(m2h) for MBA, 2.1 to 2.2 g/(m2h) for MPPA, and 0.8 to 1.2 g/(m2h) for IPA, along with a higher selectivity compared to phase inversion membranes, with fluxes ranging from 0.2 to 0.3 g/(m2h) for MBA, 0.2 g/(m2h) for MPPA, and 0.3 to 0.4 g/(m2h) for IPA. Stretched membranes demonstrated a comparable selectivity (MBA/IPA = 2.2, MPPA/IPA = 3.9), but reduced fluxes with increasing pore size, decreasing from 2.7 to 0.5 g/(m2h) for MBA, 4.9 to 0.9 g/(m2h) for MPPA, and 1.2 to 0.3 g/(m2h) for IPA, as the nominal pore size increased from 50 to 450 nm. This phenomenon likely resulted from the improved impregnation efficiency, coupled with a lower porosity and larger thickness in the membranes with larger pores. Overall, the membrane morphology significantly influenced the SLM performance and stability, with homogeneous, porous membranes possessing smaller pore sizes and high hydrophobicity exhibiting optimal characteristics. These findings underscore the critical role of membrane structure and properties in SLM applications.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

21002 - Nano-processes (applications on nano-scale); (biomaterials to be 2.9)

Projekt

—

Návaznosti

N - Vyzkumna aktivita podporovana z neverejnych zdroju

Rok uplatnění

2025

Kód důvěrnosti údajů

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

Název periodika

SEPARATION AND PURIFICATION TECHNOLOGY

ISSN

1383-5866

e-ISSN

1873-3794

Svazek periodika

352

Číslo periodika v rámci svazku

Leden

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

10

Strana od-do

1-10

Kód UT WoS článku

001263491200001

EID výsledku v databázi Scopus

2-s2.0-85194927470