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Unidirectional All-Cellulose Composites from Flax via Controlled Impregnation with Ionic Liquid
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| Zeitschriftentitel: | Polymers |
|---|---|
| Personen und Körperschaften: | , , , , |
| In: | Polymers, 12, 2020, 5, S. 1010 |
| Format: | E-Article |
| Sprache: | Englisch |
| veröffentlicht: |
MDPI AG
|
| Schlagwörter: |
| author_facet |
Chen, Feng Sawada, Daisuke Hummel, Michael Sixta, Herbert Budtova, Tatiana Chen, Feng Sawada, Daisuke Hummel, Michael Sixta, Herbert Budtova, Tatiana |
|---|---|
| author |
Chen, Feng Sawada, Daisuke Hummel, Michael Sixta, Herbert Budtova, Tatiana |
| spellingShingle |
Chen, Feng Sawada, Daisuke Hummel, Michael Sixta, Herbert Budtova, Tatiana Polymers Unidirectional All-Cellulose Composites from Flax via Controlled Impregnation with Ionic Liquid Polymers and Plastics General Chemistry |
| author_sort |
chen, feng |
| spelling |
Chen, Feng Sawada, Daisuke Hummel, Michael Sixta, Herbert Budtova, Tatiana 2073-4360 MDPI AG Polymers and Plastics General Chemistry http://dx.doi.org/10.3390/polym12051010 <jats:p>Mechanically strong all-cellulose composites are very attractive in the terms of fully bio-based and bio-degradable materials. Unidirectional flax-based all-cellulose composites are prepared via facile room-temperature impregnation with an ionic liquid, 1-ethyl-3-methyl imidazolium acetate. To determine the optimal processing conditions, the kinetics of flax dissolution in this solvent is first studied using optical microscopy. Composite morphology, crystallinity, density, the volume fraction of cellulose II and tensile properties are investigated, indicating that flax dissolution should be within certain limits. On the one hand, the amount of cellulose II formed through dissolution and coagulation should be high enough to “fuse” flax fibers, resulting in a density increase. On the other hand, only the surface layer of the fibers should be dissolved to maintain the strength provided by the inner secondary layer and avoid a detrimental decrease in crystallinity. The highest Young’s modulus and strength, 10.1 GPa and 151.3 MPa, respectively, are obtained with a crystallinity of 43% and 20 vol% of cellulose II.</jats:p> Unidirectional All-Cellulose Composites from Flax via Controlled Impregnation with Ionic Liquid Polymers |
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MDPI AG, 2020 |
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| title |
Unidirectional All-Cellulose Composites from Flax via Controlled Impregnation with Ionic Liquid |
| title_unstemmed |
Unidirectional All-Cellulose Composites from Flax via Controlled Impregnation with Ionic Liquid |
| title_full |
Unidirectional All-Cellulose Composites from Flax via Controlled Impregnation with Ionic Liquid |
| title_fullStr |
Unidirectional All-Cellulose Composites from Flax via Controlled Impregnation with Ionic Liquid |
| title_full_unstemmed |
Unidirectional All-Cellulose Composites from Flax via Controlled Impregnation with Ionic Liquid |
| title_short |
Unidirectional All-Cellulose Composites from Flax via Controlled Impregnation with Ionic Liquid |
| title_sort |
unidirectional all-cellulose composites from flax via controlled impregnation with ionic liquid |
| topic |
Polymers and Plastics General Chemistry |
| url |
http://dx.doi.org/10.3390/polym12051010 |
| publishDate |
2020 |
| physical |
1010 |
| description |
<jats:p>Mechanically strong all-cellulose composites are very attractive in the terms of fully bio-based and bio-degradable materials. Unidirectional flax-based all-cellulose composites are prepared via facile room-temperature impregnation with an ionic liquid, 1-ethyl-3-methyl imidazolium acetate. To determine the optimal processing conditions, the kinetics of flax dissolution in this solvent is first studied using optical microscopy. Composite morphology, crystallinity, density, the volume fraction of cellulose II and tensile properties are investigated, indicating that flax dissolution should be within certain limits. On the one hand, the amount of cellulose II formed through dissolution and coagulation should be high enough to “fuse” flax fibers, resulting in a density increase. On the other hand, only the surface layer of the fibers should be dissolved to maintain the strength provided by the inner secondary layer and avoid a detrimental decrease in crystallinity. The highest Young’s modulus and strength, 10.1 GPa and 151.3 MPa, respectively, are obtained with a crystallinity of 43% and 20 vol% of cellulose II.</jats:p> |
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| author | Chen, Feng, Sawada, Daisuke, Hummel, Michael, Sixta, Herbert, Budtova, Tatiana |
| author_facet | Chen, Feng, Sawada, Daisuke, Hummel, Michael, Sixta, Herbert, Budtova, Tatiana, Chen, Feng, Sawada, Daisuke, Hummel, Michael, Sixta, Herbert, Budtova, Tatiana |
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| description | <jats:p>Mechanically strong all-cellulose composites are very attractive in the terms of fully bio-based and bio-degradable materials. Unidirectional flax-based all-cellulose composites are prepared via facile room-temperature impregnation with an ionic liquid, 1-ethyl-3-methyl imidazolium acetate. To determine the optimal processing conditions, the kinetics of flax dissolution in this solvent is first studied using optical microscopy. Composite morphology, crystallinity, density, the volume fraction of cellulose II and tensile properties are investigated, indicating that flax dissolution should be within certain limits. On the one hand, the amount of cellulose II formed through dissolution and coagulation should be high enough to “fuse” flax fibers, resulting in a density increase. On the other hand, only the surface layer of the fibers should be dissolved to maintain the strength provided by the inner secondary layer and avoid a detrimental decrease in crystallinity. The highest Young’s modulus and strength, 10.1 GPa and 151.3 MPa, respectively, are obtained with a crystallinity of 43% and 20 vol% of cellulose II.</jats:p> |
| doi_str_mv | 10.3390/polym12051010 |
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| physical | 1010 |
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| spelling | Chen, Feng Sawada, Daisuke Hummel, Michael Sixta, Herbert Budtova, Tatiana 2073-4360 MDPI AG Polymers and Plastics General Chemistry http://dx.doi.org/10.3390/polym12051010 <jats:p>Mechanically strong all-cellulose composites are very attractive in the terms of fully bio-based and bio-degradable materials. Unidirectional flax-based all-cellulose composites are prepared via facile room-temperature impregnation with an ionic liquid, 1-ethyl-3-methyl imidazolium acetate. To determine the optimal processing conditions, the kinetics of flax dissolution in this solvent is first studied using optical microscopy. Composite morphology, crystallinity, density, the volume fraction of cellulose II and tensile properties are investigated, indicating that flax dissolution should be within certain limits. On the one hand, the amount of cellulose II formed through dissolution and coagulation should be high enough to “fuse” flax fibers, resulting in a density increase. On the other hand, only the surface layer of the fibers should be dissolved to maintain the strength provided by the inner secondary layer and avoid a detrimental decrease in crystallinity. The highest Young’s modulus and strength, 10.1 GPa and 151.3 MPa, respectively, are obtained with a crystallinity of 43% and 20 vol% of cellulose II.</jats:p> Unidirectional All-Cellulose Composites from Flax via Controlled Impregnation with Ionic Liquid Polymers |
| spellingShingle | Chen, Feng, Sawada, Daisuke, Hummel, Michael, Sixta, Herbert, Budtova, Tatiana, Polymers, Unidirectional All-Cellulose Composites from Flax via Controlled Impregnation with Ionic Liquid, Polymers and Plastics, General Chemistry |
| title | Unidirectional All-Cellulose Composites from Flax via Controlled Impregnation with Ionic Liquid |
| title_full | Unidirectional All-Cellulose Composites from Flax via Controlled Impregnation with Ionic Liquid |
| title_fullStr | Unidirectional All-Cellulose Composites from Flax via Controlled Impregnation with Ionic Liquid |
| title_full_unstemmed | Unidirectional All-Cellulose Composites from Flax via Controlled Impregnation with Ionic Liquid |
| title_short | Unidirectional All-Cellulose Composites from Flax via Controlled Impregnation with Ionic Liquid |
| title_sort | unidirectional all-cellulose composites from flax via controlled impregnation with ionic liquid |
| title_unstemmed | Unidirectional All-Cellulose Composites from Flax via Controlled Impregnation with Ionic Liquid |
| topic | Polymers and Plastics, General Chemistry |
| url | http://dx.doi.org/10.3390/polym12051010 |