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

Result code in 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>

Result on the web

<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>

Result language

angličtina

Original language name

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

Original language description

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.

Czech name

—

Czech description

—

Type

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

CEP classification

—

OECD FORD branch

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

Project

—

Continuities

N - Vyzkumna aktivita podporovana z neverejnych zdroju

Publication year

2025

Confidentiality

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

Name of the periodical

SEPARATION AND PURIFICATION TECHNOLOGY

ISSN

1383-5866

e-ISSN

1873-3794

Volume of the periodical

352

Issue of the periodical within the volume

Leden

Country of publishing house

NL - THE KINGDOM OF THE NETHERLANDS

Number of pages

10

Pages from-to

1-10

UT code for WoS article

001263491200001

EID of the result in the Scopus database

2-s2.0-85194927470