Hydrolysis of aromatic polyurethane in water under high pressure of CO2
We have demonstrated a hydrolysis reaction of polyurethane (PU) under high pressure of carbon dioxide (CO2) in water. We employed the PU sample, poly(methylene bis-(1,4-phenylene)hexamethylene dicarbamate), denoted as M-PU, which was synthesized from 4,4′-diphenyl methane diisocyanate and 1,4-butane...
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Wiley Periodicals, Inc.
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ftnagasakiuniv:oai:nagasaki-u.repo.nii.ac.jp:00000969 2024-09-15T18:01:39+00:00 Hydrolysis of aromatic polyurethane in water under high pressure of CO2 Motokucho, Suguru Yamaguchi, Akito Nakayama, Yu Morikawa, Hiroshi Nakatani, Hisayuki 2017-03-16 application/pdf https://nagasaki-u.repo.nii.ac.jp/record/969/files/JPSpartA55_2004.pdf eng eng Wiley Periodicals, Inc. 10.1002/pola.28576 Journal of Polymer Science Part A: Polymer Chemistry 12 55 2004 2010 0887624X https://nagasaki-u.repo.nii.ac.jp/record/969/files/JPSpartA55_2004.pdf c 2017 Wiley Periodicals, Inc. This is the peer reviewed version of the following article: Journal of Polymer Science Part A: Polymer Chemistry, 55(12), pp.2004-2010; 2017, which has been published in final form at https://doi.org/10.1002/pola.28576. This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Use of Self-Archived Versions. carbon dioxide carbonic acid degradation polyurethanes recycling AM 2017 ftnagasakiuniv 2024-08-23T06:19:41Z We have demonstrated a hydrolysis reaction of polyurethane (PU) under high pressure of carbon dioxide (CO2) in water. We employed the PU sample, poly(methylene bis-(1,4-phenylene)hexamethylene dicarbamate), denoted as M-PU, which was synthesized from 4,4′-diphenyl methane diisocyanate and 1,4-butane diol (BD). The optimum hydrolysis reaction condition was 190 °C under CO2 pressures over 4.1 MPa in water medium, and 93% hydrolysis of M-PU was achieved. After the reaction, the water-soluble parts were obtained, and isolated by column chromatography. The isolated products were 4,4′-methylenedianiline (MDA) and 1,4-butane diol (BD), which were components of repeating unit of M-PU. In addition, the hydrolysis reaction gave no byproduct. This hydrolysis under high pressure of CO2 with water is a reaction by which M-PU is selectively hydrolyzed into MDA and BD by cleaving urethane linkage. Moreover, the resulting hydrolyzed products were easily obtained by evaporation of aqueous layer after the reaction, indicating an efficient chemical recycling of PU was achieved. Journal of Polymer Science Part A: Polymer Chemistry, 55(12), pp.2004-2010; 2017 journal article Other/Unknown Material Carbonic acid NAOSITE: Nagasaki University Academic Output SITE |
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Open Polar |
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NAOSITE: Nagasaki University Academic Output SITE |
op_collection_id |
ftnagasakiuniv |
language |
English |
topic |
carbon dioxide carbonic acid degradation polyurethanes recycling |
spellingShingle |
carbon dioxide carbonic acid degradation polyurethanes recycling Motokucho, Suguru Yamaguchi, Akito Nakayama, Yu Morikawa, Hiroshi Nakatani, Hisayuki Hydrolysis of aromatic polyurethane in water under high pressure of CO2 |
topic_facet |
carbon dioxide carbonic acid degradation polyurethanes recycling |
description |
We have demonstrated a hydrolysis reaction of polyurethane (PU) under high pressure of carbon dioxide (CO2) in water. We employed the PU sample, poly(methylene bis-(1,4-phenylene)hexamethylene dicarbamate), denoted as M-PU, which was synthesized from 4,4′-diphenyl methane diisocyanate and 1,4-butane diol (BD). The optimum hydrolysis reaction condition was 190 °C under CO2 pressures over 4.1 MPa in water medium, and 93% hydrolysis of M-PU was achieved. After the reaction, the water-soluble parts were obtained, and isolated by column chromatography. The isolated products were 4,4′-methylenedianiline (MDA) and 1,4-butane diol (BD), which were components of repeating unit of M-PU. In addition, the hydrolysis reaction gave no byproduct. This hydrolysis under high pressure of CO2 with water is a reaction by which M-PU is selectively hydrolyzed into MDA and BD by cleaving urethane linkage. Moreover, the resulting hydrolyzed products were easily obtained by evaporation of aqueous layer after the reaction, indicating an efficient chemical recycling of PU was achieved. Journal of Polymer Science Part A: Polymer Chemistry, 55(12), pp.2004-2010; 2017 journal article |
format |
Other/Unknown Material |
author |
Motokucho, Suguru Yamaguchi, Akito Nakayama, Yu Morikawa, Hiroshi Nakatani, Hisayuki |
author_facet |
Motokucho, Suguru Yamaguchi, Akito Nakayama, Yu Morikawa, Hiroshi Nakatani, Hisayuki |
author_sort |
Motokucho, Suguru |
title |
Hydrolysis of aromatic polyurethane in water under high pressure of CO2 |
title_short |
Hydrolysis of aromatic polyurethane in water under high pressure of CO2 |
title_full |
Hydrolysis of aromatic polyurethane in water under high pressure of CO2 |
title_fullStr |
Hydrolysis of aromatic polyurethane in water under high pressure of CO2 |
title_full_unstemmed |
Hydrolysis of aromatic polyurethane in water under high pressure of CO2 |
title_sort |
hydrolysis of aromatic polyurethane in water under high pressure of co2 |
publisher |
Wiley Periodicals, Inc. |
publishDate |
2017 |
url |
https://nagasaki-u.repo.nii.ac.jp/record/969/files/JPSpartA55_2004.pdf |
genre |
Carbonic acid |
genre_facet |
Carbonic acid |
op_relation |
10.1002/pola.28576 Journal of Polymer Science Part A: Polymer Chemistry 12 55 2004 2010 0887624X https://nagasaki-u.repo.nii.ac.jp/record/969/files/JPSpartA55_2004.pdf |
op_rights |
c 2017 Wiley Periodicals, Inc. This is the peer reviewed version of the following article: Journal of Polymer Science Part A: Polymer Chemistry, 55(12), pp.2004-2010; 2017, which has been published in final form at https://doi.org/10.1002/pola.28576. This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Use of Self-Archived Versions. |
_version_ |
1810438753192247296 |