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Formation of Water-Channel by Propylene Glycol into Polymer for Porous Materials

In this study, a porous membrane with a cellulose acetate (CA) matrix was fabricated using propylene glycol with a water pressure treatment without a metal salt as an additive. The water pressure treatment of the fabricated CA membrane with propylene glycol yielded nanopores. The nanopores were form...

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Autores principales: Hong, Seong Ho, Cho, Younghyun, Kang, Sang Wook
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2021
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8623885/
https://www.ncbi.nlm.nih.gov/pubmed/34832110
http://dx.doi.org/10.3390/membranes11110881
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author Hong, Seong Ho
Cho, Younghyun
Kang, Sang Wook
author_facet Hong, Seong Ho
Cho, Younghyun
Kang, Sang Wook
author_sort Hong, Seong Ho
collection PubMed
description In this study, a porous membrane with a cellulose acetate (CA) matrix was fabricated using propylene glycol with a water pressure treatment without a metal salt as an additive. The water pressure treatment of the fabricated CA membrane with propylene glycol yielded nanopores. The nanopores were formed as the additives in the CA chains led to plasticization. The weakened chains of the parts where the plasticization occurred were broken by the water pressure, which generated the pores. Compared to the previous study with glycerin as an additive, the size of the hydration region was controlled by the number of hydrophilic functional groups. When water pressure was applied to the CA membrane containing propylene glycol as an additive, the hydration area was small, so it was effective to control the pore size and the number of nano pores than glycerin. In addition, the number of nanopores and pore size could be easily adjusted by the water pressure. The porosity of the membrane was increased owing to the trace amount of propylene glycol, confirmed by scanning electron microscopy (SEM) and porosimetry. The interaction between the CA and propylene glycol was verified by Fourier-transform infrared spectroscopy (FT-IR) and thermogravimetric analysis (TGA). Consequently, it was the optimum composition to generate pores at the CA/propylene glycol 1:0.2 ratio, and porosity of 69.7% and average pore diameter of 300 nm was confirmed. Since it is a membrane with high porosity and nano sized pores, it is expected to be applied in various fields.
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spelling pubmed-86238852021-11-27 Formation of Water-Channel by Propylene Glycol into Polymer for Porous Materials Hong, Seong Ho Cho, Younghyun Kang, Sang Wook Membranes (Basel) Article In this study, a porous membrane with a cellulose acetate (CA) matrix was fabricated using propylene glycol with a water pressure treatment without a metal salt as an additive. The water pressure treatment of the fabricated CA membrane with propylene glycol yielded nanopores. The nanopores were formed as the additives in the CA chains led to plasticization. The weakened chains of the parts where the plasticization occurred were broken by the water pressure, which generated the pores. Compared to the previous study with glycerin as an additive, the size of the hydration region was controlled by the number of hydrophilic functional groups. When water pressure was applied to the CA membrane containing propylene glycol as an additive, the hydration area was small, so it was effective to control the pore size and the number of nano pores than glycerin. In addition, the number of nanopores and pore size could be easily adjusted by the water pressure. The porosity of the membrane was increased owing to the trace amount of propylene glycol, confirmed by scanning electron microscopy (SEM) and porosimetry. The interaction between the CA and propylene glycol was verified by Fourier-transform infrared spectroscopy (FT-IR) and thermogravimetric analysis (TGA). Consequently, it was the optimum composition to generate pores at the CA/propylene glycol 1:0.2 ratio, and porosity of 69.7% and average pore diameter of 300 nm was confirmed. Since it is a membrane with high porosity and nano sized pores, it is expected to be applied in various fields. MDPI 2021-11-16 /pmc/articles/PMC8623885/ /pubmed/34832110 http://dx.doi.org/10.3390/membranes11110881 Text en © 2021 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
Hong, Seong Ho
Cho, Younghyun
Kang, Sang Wook
Formation of Water-Channel by Propylene Glycol into Polymer for Porous Materials
title Formation of Water-Channel by Propylene Glycol into Polymer for Porous Materials
title_full Formation of Water-Channel by Propylene Glycol into Polymer for Porous Materials
title_fullStr Formation of Water-Channel by Propylene Glycol into Polymer for Porous Materials
title_full_unstemmed Formation of Water-Channel by Propylene Glycol into Polymer for Porous Materials
title_short Formation of Water-Channel by Propylene Glycol into Polymer for Porous Materials
title_sort formation of water-channel by propylene glycol into polymer for porous materials
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8623885/
https://www.ncbi.nlm.nih.gov/pubmed/34832110
http://dx.doi.org/10.3390/membranes11110881
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