Cargando…

Molecularly Imprinting Microfiltration Membranes Able to Absorb Diethyl Phthalate from Water

In this study, polypropylene porous membranes with an average pore size of 1.25 µm were modified by barrier discharge plasma. Next, molecularly imprinted layers with an imprint of diethyl phthalate (DEP) ware grafted of their surface. In order to optimize the composition of the modifying mixture var...

Descripción completa

Detalles Bibliográficos
Autores principales: Smolinska-Kempisty, Katarzyna, Wolska, Joanna, Bryjak, Marek
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2022
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9144673/
https://www.ncbi.nlm.nih.gov/pubmed/35629829
http://dx.doi.org/10.3390/membranes12050503
_version_ 1784716105743335424
author Smolinska-Kempisty, Katarzyna
Wolska, Joanna
Bryjak, Marek
author_facet Smolinska-Kempisty, Katarzyna
Wolska, Joanna
Bryjak, Marek
author_sort Smolinska-Kempisty, Katarzyna
collection PubMed
description In this study, polypropylene porous membranes with an average pore size of 1.25 µm were modified by barrier discharge plasma. Next, molecularly imprinted layers with an imprint of diethyl phthalate (DEP) ware grafted of their surface. In order to optimize the composition of the modifying mixture various solvents, the ratios of functional monomers and the cross-linking monomer as well as various amounts of phthalate were verified. It was shown that the most effective membranes were obtained during polymerization in n-octane with the participation of functional monomers in the ratio 3:7 and the amount of phthalate 7 wt.%. The membranes were tested in the filtration process as well as static and dynamic sorption. In all of these processes, the imprinted membranes showed better properties than those without the imprint. The diethyl phthalate retention coefficient was 36.12% for membranes with a grafting yield of 1.916 mg/cm(2). On the other hand, DEP static sorption for the imprinted membranes was 3.87 µmol/g higher than for non-imprinted membranes. Also, in the process of dynamic sorption higher values were observed for membranes with the imprint (DS(MIM), 4.12 µmol/g; DS(NIM), 1.18 µmol/g). The membranes were also tested under real conditions. In the process of filtration of tap water contaminated with phthalate, the presence of imprints in the membrane structure resulted in more than three times higher sorption values (3.09 µmol/g) than in the case of non-imprinted membranes (1.12 µmol/g).
format Online
Article
Text
id pubmed-9144673
institution National Center for Biotechnology Information
language English
publishDate 2022
publisher MDPI
record_format MEDLINE/PubMed
spelling pubmed-91446732022-05-29 Molecularly Imprinting Microfiltration Membranes Able to Absorb Diethyl Phthalate from Water Smolinska-Kempisty, Katarzyna Wolska, Joanna Bryjak, Marek Membranes (Basel) Article In this study, polypropylene porous membranes with an average pore size of 1.25 µm were modified by barrier discharge plasma. Next, molecularly imprinted layers with an imprint of diethyl phthalate (DEP) ware grafted of their surface. In order to optimize the composition of the modifying mixture various solvents, the ratios of functional monomers and the cross-linking monomer as well as various amounts of phthalate were verified. It was shown that the most effective membranes were obtained during polymerization in n-octane with the participation of functional monomers in the ratio 3:7 and the amount of phthalate 7 wt.%. The membranes were tested in the filtration process as well as static and dynamic sorption. In all of these processes, the imprinted membranes showed better properties than those without the imprint. The diethyl phthalate retention coefficient was 36.12% for membranes with a grafting yield of 1.916 mg/cm(2). On the other hand, DEP static sorption for the imprinted membranes was 3.87 µmol/g higher than for non-imprinted membranes. Also, in the process of dynamic sorption higher values were observed for membranes with the imprint (DS(MIM), 4.12 µmol/g; DS(NIM), 1.18 µmol/g). The membranes were also tested under real conditions. In the process of filtration of tap water contaminated with phthalate, the presence of imprints in the membrane structure resulted in more than three times higher sorption values (3.09 µmol/g) than in the case of non-imprinted membranes (1.12 µmol/g). MDPI 2022-05-08 /pmc/articles/PMC9144673/ /pubmed/35629829 http://dx.doi.org/10.3390/membranes12050503 Text en © 2022 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Smolinska-Kempisty, Katarzyna
Wolska, Joanna
Bryjak, Marek
Molecularly Imprinting Microfiltration Membranes Able to Absorb Diethyl Phthalate from Water
title Molecularly Imprinting Microfiltration Membranes Able to Absorb Diethyl Phthalate from Water
title_full Molecularly Imprinting Microfiltration Membranes Able to Absorb Diethyl Phthalate from Water
title_fullStr Molecularly Imprinting Microfiltration Membranes Able to Absorb Diethyl Phthalate from Water
title_full_unstemmed Molecularly Imprinting Microfiltration Membranes Able to Absorb Diethyl Phthalate from Water
title_short Molecularly Imprinting Microfiltration Membranes Able to Absorb Diethyl Phthalate from Water
title_sort molecularly imprinting microfiltration membranes able to absorb diethyl phthalate from water
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9144673/
https://www.ncbi.nlm.nih.gov/pubmed/35629829
http://dx.doi.org/10.3390/membranes12050503
work_keys_str_mv AT smolinskakempistykatarzyna molecularlyimprintingmicrofiltrationmembranesabletoabsorbdiethylphthalatefromwater
AT wolskajoanna molecularlyimprintingmicrofiltrationmembranesabletoabsorbdiethylphthalatefromwater
AT bryjakmarek molecularlyimprintingmicrofiltrationmembranesabletoabsorbdiethylphthalatefromwater