Hydrophobic materials based on cotton linter cellulose and an epoxy-activated polyester derived from a suberin monomer
Abstract Suberin is a natural hydrophobic material that could be used to improve the water repellency of cellulose surfaces. It is also abundant in the outer bark of birch ( Betula verrucosa ); birch bark is a side-stream product in Scandinavia from the forest industry, which is generally burned for...
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Walter de Gruyter GmbH
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crdegruyter:10.1515/hf-2014-0261 2024-10-06T13:44:16+00:00 Hydrophobic materials based on cotton linter cellulose and an epoxy-activated polyester derived from a suberin monomer Li, Dongfang Iversen, Tommy Ek, Monica 2015 http://dx.doi.org/10.1515/hf-2014-0261 http://www.degruyter.com/view/j/hfsg.2015.69.issue-6/hf-2014-0261/hf-2014-0261.xml https://www.degruyter.com/document/doi/10.1515/hf-2014-0261/xml https://www.degruyter.com/document/doi/10.1515/hf-2014-0261/pdf en eng Walter de Gruyter GmbH Holzforschung volume 69, issue 6, page 721-730 ISSN 1437-434X 0018-3830 journal-article 2015 crdegruyter https://doi.org/10.1515/hf-2014-0261 2024-09-17T04:10:16Z Abstract Suberin is a natural hydrophobic material that could be used to improve the water repellency of cellulose surfaces. It is also abundant in the outer bark of birch ( Betula verrucosa ); birch bark is a side-stream product in Scandinavia from the forest industry, which is generally burned for energy production. A suberin monomer, cis-9,10-epoxy-18-hydroxyoctadecanoic acid, was isolated from birch outer bark and polymerized via lipase (immobilized Candida antarctica lipase B). The resulting epoxy-activated polyester was characterized by nuclear magnetic resonance (NMR) imaging, matrix-assisted laser desorption/ionization-time-of-flight mass spectrometry, and size exclusion chromatography. Then the polyester was cured with tartaric or oxalic acid, and the crosslinked polyesters were characterized by Fourier transform infrared spectroscopy (FTIR) and differential scanning calorimetry. Hydrophobic materials were prepared by compression molding of polyester-impregnated cellulose sheets, and the final products were characterized by FTIR, cross-polarization magic angle spinning 13 C NMR, and field-emission scanning electron microscopy. The water contact angle was significantly increased from 0° for the original cellulose sheets to over 100° for the produced hydrophobic materials. Article in Journal/Newspaper Antarc* Antarctica De Gruyter Holzforschung 69 6 721 730 |
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Open Polar |
collection |
De Gruyter |
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crdegruyter |
language |
English |
description |
Abstract Suberin is a natural hydrophobic material that could be used to improve the water repellency of cellulose surfaces. It is also abundant in the outer bark of birch ( Betula verrucosa ); birch bark is a side-stream product in Scandinavia from the forest industry, which is generally burned for energy production. A suberin monomer, cis-9,10-epoxy-18-hydroxyoctadecanoic acid, was isolated from birch outer bark and polymerized via lipase (immobilized Candida antarctica lipase B). The resulting epoxy-activated polyester was characterized by nuclear magnetic resonance (NMR) imaging, matrix-assisted laser desorption/ionization-time-of-flight mass spectrometry, and size exclusion chromatography. Then the polyester was cured with tartaric or oxalic acid, and the crosslinked polyesters were characterized by Fourier transform infrared spectroscopy (FTIR) and differential scanning calorimetry. Hydrophobic materials were prepared by compression molding of polyester-impregnated cellulose sheets, and the final products were characterized by FTIR, cross-polarization magic angle spinning 13 C NMR, and field-emission scanning electron microscopy. The water contact angle was significantly increased from 0° for the original cellulose sheets to over 100° for the produced hydrophobic materials. |
format |
Article in Journal/Newspaper |
author |
Li, Dongfang Iversen, Tommy Ek, Monica |
spellingShingle |
Li, Dongfang Iversen, Tommy Ek, Monica Hydrophobic materials based on cotton linter cellulose and an epoxy-activated polyester derived from a suberin monomer |
author_facet |
Li, Dongfang Iversen, Tommy Ek, Monica |
author_sort |
Li, Dongfang |
title |
Hydrophobic materials based on cotton linter cellulose and an epoxy-activated polyester derived from a suberin monomer |
title_short |
Hydrophobic materials based on cotton linter cellulose and an epoxy-activated polyester derived from a suberin monomer |
title_full |
Hydrophobic materials based on cotton linter cellulose and an epoxy-activated polyester derived from a suberin monomer |
title_fullStr |
Hydrophobic materials based on cotton linter cellulose and an epoxy-activated polyester derived from a suberin monomer |
title_full_unstemmed |
Hydrophobic materials based on cotton linter cellulose and an epoxy-activated polyester derived from a suberin monomer |
title_sort |
hydrophobic materials based on cotton linter cellulose and an epoxy-activated polyester derived from a suberin monomer |
publisher |
Walter de Gruyter GmbH |
publishDate |
2015 |
url |
http://dx.doi.org/10.1515/hf-2014-0261 http://www.degruyter.com/view/j/hfsg.2015.69.issue-6/hf-2014-0261/hf-2014-0261.xml https://www.degruyter.com/document/doi/10.1515/hf-2014-0261/xml https://www.degruyter.com/document/doi/10.1515/hf-2014-0261/pdf |
genre |
Antarc* Antarctica |
genre_facet |
Antarc* Antarctica |
op_source |
Holzforschung volume 69, issue 6, page 721-730 ISSN 1437-434X 0018-3830 |
op_doi |
https://doi.org/10.1515/hf-2014-0261 |
container_title |
Holzforschung |
container_volume |
69 |
container_issue |
6 |
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721 |
op_container_end_page |
730 |
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1812182665842917376 |