Chrome-free synergistic tanning system based on biomass-derived hydroxycarboxylic acid–zirconium complexes
Reducing or eliminating chrome pollution from leather processing is an essential task for the sustainable development of leather industry. Herein, we established a chrome-free tanning system based on biomass-derived hydroxycarboxylic acid (BHCA)–zirconium complexes. The synergistic tanning mechanism...
Ausführliche Beschreibung
Gespeichert in:
| Autor*in: |
Yu, Yue [verfasserIn] |
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| Format: |
E-Artikel |
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| Sprache: |
Englisch |
| Erschienen: |
2022transfer abstract |
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| Übergeordnetes Werk: |
Enthalten in: Self-assembled 3D hierarchical MnCO - Rajendiran, Rajmohan ELSEVIER, 2020, Amsterdam [u.a.] |
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| Übergeordnetes Werk: |
volume:336 ; year:2022 ; day:15 ; month:02 ; pages:0 |
| Links: |
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| DOI / URN: |
10.1016/j.jclepro.2022.130428 |
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ELV05667838X |
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| 245 | 1 | 0 | |a Chrome-free synergistic tanning system based on biomass-derived hydroxycarboxylic acid–zirconium complexes |
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| 520 | |a Reducing or eliminating chrome pollution from leather processing is an essential task for the sustainable development of leather industry. Herein, we established a chrome-free tanning system based on biomass-derived hydroxycarboxylic acid (BHCA)–zirconium complexes. The synergistic tanning mechanism of BHCA and zirconium salt was investigated by exploring the interaction among BHCA, zirconium salt, and collagen fiber (CF). Results show that the hydroxyl and carboxyl groups in BHCA coordinated with zirconium ion to form Zr complexes, while BHCA caused changes in the morphology and conformation of collagen through ionic and hydrogen bonding. The order of the contribution of active groups in CF involved in the coordination reaction in BHCA–Zr tanning presented as amino group > carboxyl group > hydroxyl group. Moreover, BHCA with multiple functional groups and large molecular size provided indispensable non-covalent binding sites for BHCA–Zr tanning system, resulting in the formation of multi-point crosslinking network structure among CFs. Thus, BHCA–Zr exhibited an obvious synergistic effect, and its tanning performance was remarkably better than that of conventional lactic acid–zirconium complexes. This work provides new insights into the development of novel chrome-free eco-tanning system. | ||
| 520 | |a Reducing or eliminating chrome pollution from leather processing is an essential task for the sustainable development of leather industry. Herein, we established a chrome-free tanning system based on biomass-derived hydroxycarboxylic acid (BHCA)–zirconium complexes. The synergistic tanning mechanism of BHCA and zirconium salt was investigated by exploring the interaction among BHCA, zirconium salt, and collagen fiber (CF). Results show that the hydroxyl and carboxyl groups in BHCA coordinated with zirconium ion to form Zr complexes, while BHCA caused changes in the morphology and conformation of collagen through ionic and hydrogen bonding. The order of the contribution of active groups in CF involved in the coordination reaction in BHCA–Zr tanning presented as amino group > carboxyl group > hydroxyl group. Moreover, BHCA with multiple functional groups and large molecular size provided indispensable non-covalent binding sites for BHCA–Zr tanning system, resulting in the formation of multi-point crosslinking network structure among CFs. Thus, BHCA–Zr exhibited an obvious synergistic effect, and its tanning performance was remarkably better than that of conventional lactic acid–zirconium complexes. This work provides new insights into the development of novel chrome-free eco-tanning system. | ||
| 650 | 7 | |a Zirconium |2 Elsevier | |
| 650 | 7 | |a Ligand |2 Elsevier | |
| 650 | 7 | |a Leather |2 Elsevier | |
| 650 | 7 | |a Chrome-free tanning |2 Elsevier | |
| 650 | 7 | |a Synergistic effect |2 Elsevier | |
| 700 | 1 | |a Wang, Hui |4 oth | |
| 700 | 1 | |a Wang, Ya-nan |4 oth | |
| 700 | 1 | |a Zhou, Jianfei |4 oth | |
| 700 | 1 | |a Shi, Bi |4 oth | |
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10.1016/j.jclepro.2022.130428 doi /cbs_pica/cbs_olc/import_discovery/elsevier/einzuspielen/GBV00000000001802.pica (DE-627)ELV05667838X (ELSEVIER)S0959-6526(22)00074-9 DE-627 ger DE-627 rakwb eng 540 VZ 35.18 bkl Yu, Yue verfasserin aut Chrome-free synergistic tanning system based on biomass-derived hydroxycarboxylic acid–zirconium complexes 2022transfer abstract nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier Reducing or eliminating chrome pollution from leather processing is an essential task for the sustainable development of leather industry. Herein, we established a chrome-free tanning system based on biomass-derived hydroxycarboxylic acid (BHCA)–zirconium complexes. The synergistic tanning mechanism of BHCA and zirconium salt was investigated by exploring the interaction among BHCA, zirconium salt, and collagen fiber (CF). Results show that the hydroxyl and carboxyl groups in BHCA coordinated with zirconium ion to form Zr complexes, while BHCA caused changes in the morphology and conformation of collagen through ionic and hydrogen bonding. The order of the contribution of active groups in CF involved in the coordination reaction in BHCA–Zr tanning presented as amino group > carboxyl group > hydroxyl group. Moreover, BHCA with multiple functional groups and large molecular size provided indispensable non-covalent binding sites for BHCA–Zr tanning system, resulting in the formation of multi-point crosslinking network structure among CFs. Thus, BHCA–Zr exhibited an obvious synergistic effect, and its tanning performance was remarkably better than that of conventional lactic acid–zirconium complexes. This work provides new insights into the development of novel chrome-free eco-tanning system. Reducing or eliminating chrome pollution from leather processing is an essential task for the sustainable development of leather industry. Herein, we established a chrome-free tanning system based on biomass-derived hydroxycarboxylic acid (BHCA)–zirconium complexes. The synergistic tanning mechanism of BHCA and zirconium salt was investigated by exploring the interaction among BHCA, zirconium salt, and collagen fiber (CF). Results show that the hydroxyl and carboxyl groups in BHCA coordinated with zirconium ion to form Zr complexes, while BHCA caused changes in the morphology and conformation of collagen through ionic and hydrogen bonding. The order of the contribution of active groups in CF involved in the coordination reaction in BHCA–Zr tanning presented as amino group > carboxyl group > hydroxyl group. Moreover, BHCA with multiple functional groups and large molecular size provided indispensable non-covalent binding sites for BHCA–Zr tanning system, resulting in the formation of multi-point crosslinking network structure among CFs. Thus, BHCA–Zr exhibited an obvious synergistic effect, and its tanning performance was remarkably better than that of conventional lactic acid–zirconium complexes. This work provides new insights into the development of novel chrome-free eco-tanning system. Zirconium Elsevier Ligand Elsevier Leather Elsevier Chrome-free tanning Elsevier Synergistic effect Elsevier Wang, Hui oth Wang, Ya-nan oth Zhou, Jianfei oth Shi, Bi oth Enthalten in Elsevier Science Rajendiran, Rajmohan ELSEVIER Self-assembled 3D hierarchical MnCO 2020 Amsterdam [u.a.] (DE-627)ELV003750353 volume:336 year:2022 day:15 month:02 pages:0 https://doi.org/10.1016/j.jclepro.2022.130428 Volltext GBV_USEFLAG_U GBV_ELV SYSFLAG_U 35.18 Kolloidchemie Grenzflächenchemie VZ AR 336 2022 15 0215 0 |
| spelling |
10.1016/j.jclepro.2022.130428 doi /cbs_pica/cbs_olc/import_discovery/elsevier/einzuspielen/GBV00000000001802.pica (DE-627)ELV05667838X (ELSEVIER)S0959-6526(22)00074-9 DE-627 ger DE-627 rakwb eng 540 VZ 35.18 bkl Yu, Yue verfasserin aut Chrome-free synergistic tanning system based on biomass-derived hydroxycarboxylic acid–zirconium complexes 2022transfer abstract nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier Reducing or eliminating chrome pollution from leather processing is an essential task for the sustainable development of leather industry. Herein, we established a chrome-free tanning system based on biomass-derived hydroxycarboxylic acid (BHCA)–zirconium complexes. The synergistic tanning mechanism of BHCA and zirconium salt was investigated by exploring the interaction among BHCA, zirconium salt, and collagen fiber (CF). Results show that the hydroxyl and carboxyl groups in BHCA coordinated with zirconium ion to form Zr complexes, while BHCA caused changes in the morphology and conformation of collagen through ionic and hydrogen bonding. The order of the contribution of active groups in CF involved in the coordination reaction in BHCA–Zr tanning presented as amino group > carboxyl group > hydroxyl group. Moreover, BHCA with multiple functional groups and large molecular size provided indispensable non-covalent binding sites for BHCA–Zr tanning system, resulting in the formation of multi-point crosslinking network structure among CFs. Thus, BHCA–Zr exhibited an obvious synergistic effect, and its tanning performance was remarkably better than that of conventional lactic acid–zirconium complexes. This work provides new insights into the development of novel chrome-free eco-tanning system. Reducing or eliminating chrome pollution from leather processing is an essential task for the sustainable development of leather industry. Herein, we established a chrome-free tanning system based on biomass-derived hydroxycarboxylic acid (BHCA)–zirconium complexes. The synergistic tanning mechanism of BHCA and zirconium salt was investigated by exploring the interaction among BHCA, zirconium salt, and collagen fiber (CF). Results show that the hydroxyl and carboxyl groups in BHCA coordinated with zirconium ion to form Zr complexes, while BHCA caused changes in the morphology and conformation of collagen through ionic and hydrogen bonding. The order of the contribution of active groups in CF involved in the coordination reaction in BHCA–Zr tanning presented as amino group > carboxyl group > hydroxyl group. Moreover, BHCA with multiple functional groups and large molecular size provided indispensable non-covalent binding sites for BHCA–Zr tanning system, resulting in the formation of multi-point crosslinking network structure among CFs. Thus, BHCA–Zr exhibited an obvious synergistic effect, and its tanning performance was remarkably better than that of conventional lactic acid–zirconium complexes. This work provides new insights into the development of novel chrome-free eco-tanning system. Zirconium Elsevier Ligand Elsevier Leather Elsevier Chrome-free tanning Elsevier Synergistic effect Elsevier Wang, Hui oth Wang, Ya-nan oth Zhou, Jianfei oth Shi, Bi oth Enthalten in Elsevier Science Rajendiran, Rajmohan ELSEVIER Self-assembled 3D hierarchical MnCO 2020 Amsterdam [u.a.] (DE-627)ELV003750353 volume:336 year:2022 day:15 month:02 pages:0 https://doi.org/10.1016/j.jclepro.2022.130428 Volltext GBV_USEFLAG_U GBV_ELV SYSFLAG_U 35.18 Kolloidchemie Grenzflächenchemie VZ AR 336 2022 15 0215 0 |
| allfields_unstemmed |
10.1016/j.jclepro.2022.130428 doi /cbs_pica/cbs_olc/import_discovery/elsevier/einzuspielen/GBV00000000001802.pica (DE-627)ELV05667838X (ELSEVIER)S0959-6526(22)00074-9 DE-627 ger DE-627 rakwb eng 540 VZ 35.18 bkl Yu, Yue verfasserin aut Chrome-free synergistic tanning system based on biomass-derived hydroxycarboxylic acid–zirconium complexes 2022transfer abstract nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier Reducing or eliminating chrome pollution from leather processing is an essential task for the sustainable development of leather industry. Herein, we established a chrome-free tanning system based on biomass-derived hydroxycarboxylic acid (BHCA)–zirconium complexes. The synergistic tanning mechanism of BHCA and zirconium salt was investigated by exploring the interaction among BHCA, zirconium salt, and collagen fiber (CF). Results show that the hydroxyl and carboxyl groups in BHCA coordinated with zirconium ion to form Zr complexes, while BHCA caused changes in the morphology and conformation of collagen through ionic and hydrogen bonding. The order of the contribution of active groups in CF involved in the coordination reaction in BHCA–Zr tanning presented as amino group > carboxyl group > hydroxyl group. Moreover, BHCA with multiple functional groups and large molecular size provided indispensable non-covalent binding sites for BHCA–Zr tanning system, resulting in the formation of multi-point crosslinking network structure among CFs. Thus, BHCA–Zr exhibited an obvious synergistic effect, and its tanning performance was remarkably better than that of conventional lactic acid–zirconium complexes. This work provides new insights into the development of novel chrome-free eco-tanning system. Reducing or eliminating chrome pollution from leather processing is an essential task for the sustainable development of leather industry. Herein, we established a chrome-free tanning system based on biomass-derived hydroxycarboxylic acid (BHCA)–zirconium complexes. The synergistic tanning mechanism of BHCA and zirconium salt was investigated by exploring the interaction among BHCA, zirconium salt, and collagen fiber (CF). Results show that the hydroxyl and carboxyl groups in BHCA coordinated with zirconium ion to form Zr complexes, while BHCA caused changes in the morphology and conformation of collagen through ionic and hydrogen bonding. The order of the contribution of active groups in CF involved in the coordination reaction in BHCA–Zr tanning presented as amino group > carboxyl group > hydroxyl group. Moreover, BHCA with multiple functional groups and large molecular size provided indispensable non-covalent binding sites for BHCA–Zr tanning system, resulting in the formation of multi-point crosslinking network structure among CFs. Thus, BHCA–Zr exhibited an obvious synergistic effect, and its tanning performance was remarkably better than that of conventional lactic acid–zirconium complexes. This work provides new insights into the development of novel chrome-free eco-tanning system. Zirconium Elsevier Ligand Elsevier Leather Elsevier Chrome-free tanning Elsevier Synergistic effect Elsevier Wang, Hui oth Wang, Ya-nan oth Zhou, Jianfei oth Shi, Bi oth Enthalten in Elsevier Science Rajendiran, Rajmohan ELSEVIER Self-assembled 3D hierarchical MnCO 2020 Amsterdam [u.a.] (DE-627)ELV003750353 volume:336 year:2022 day:15 month:02 pages:0 https://doi.org/10.1016/j.jclepro.2022.130428 Volltext GBV_USEFLAG_U GBV_ELV SYSFLAG_U 35.18 Kolloidchemie Grenzflächenchemie VZ AR 336 2022 15 0215 0 |
| allfieldsGer |
10.1016/j.jclepro.2022.130428 doi /cbs_pica/cbs_olc/import_discovery/elsevier/einzuspielen/GBV00000000001802.pica (DE-627)ELV05667838X (ELSEVIER)S0959-6526(22)00074-9 DE-627 ger DE-627 rakwb eng 540 VZ 35.18 bkl Yu, Yue verfasserin aut Chrome-free synergistic tanning system based on biomass-derived hydroxycarboxylic acid–zirconium complexes 2022transfer abstract nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier Reducing or eliminating chrome pollution from leather processing is an essential task for the sustainable development of leather industry. Herein, we established a chrome-free tanning system based on biomass-derived hydroxycarboxylic acid (BHCA)–zirconium complexes. The synergistic tanning mechanism of BHCA and zirconium salt was investigated by exploring the interaction among BHCA, zirconium salt, and collagen fiber (CF). Results show that the hydroxyl and carboxyl groups in BHCA coordinated with zirconium ion to form Zr complexes, while BHCA caused changes in the morphology and conformation of collagen through ionic and hydrogen bonding. The order of the contribution of active groups in CF involved in the coordination reaction in BHCA–Zr tanning presented as amino group > carboxyl group > hydroxyl group. Moreover, BHCA with multiple functional groups and large molecular size provided indispensable non-covalent binding sites for BHCA–Zr tanning system, resulting in the formation of multi-point crosslinking network structure among CFs. Thus, BHCA–Zr exhibited an obvious synergistic effect, and its tanning performance was remarkably better than that of conventional lactic acid–zirconium complexes. This work provides new insights into the development of novel chrome-free eco-tanning system. Reducing or eliminating chrome pollution from leather processing is an essential task for the sustainable development of leather industry. Herein, we established a chrome-free tanning system based on biomass-derived hydroxycarboxylic acid (BHCA)–zirconium complexes. The synergistic tanning mechanism of BHCA and zirconium salt was investigated by exploring the interaction among BHCA, zirconium salt, and collagen fiber (CF). Results show that the hydroxyl and carboxyl groups in BHCA coordinated with zirconium ion to form Zr complexes, while BHCA caused changes in the morphology and conformation of collagen through ionic and hydrogen bonding. The order of the contribution of active groups in CF involved in the coordination reaction in BHCA–Zr tanning presented as amino group > carboxyl group > hydroxyl group. Moreover, BHCA with multiple functional groups and large molecular size provided indispensable non-covalent binding sites for BHCA–Zr tanning system, resulting in the formation of multi-point crosslinking network structure among CFs. Thus, BHCA–Zr exhibited an obvious synergistic effect, and its tanning performance was remarkably better than that of conventional lactic acid–zirconium complexes. This work provides new insights into the development of novel chrome-free eco-tanning system. Zirconium Elsevier Ligand Elsevier Leather Elsevier Chrome-free tanning Elsevier Synergistic effect Elsevier Wang, Hui oth Wang, Ya-nan oth Zhou, Jianfei oth Shi, Bi oth Enthalten in Elsevier Science Rajendiran, Rajmohan ELSEVIER Self-assembled 3D hierarchical MnCO 2020 Amsterdam [u.a.] (DE-627)ELV003750353 volume:336 year:2022 day:15 month:02 pages:0 https://doi.org/10.1016/j.jclepro.2022.130428 Volltext GBV_USEFLAG_U GBV_ELV SYSFLAG_U 35.18 Kolloidchemie Grenzflächenchemie VZ AR 336 2022 15 0215 0 |
| allfieldsSound |
10.1016/j.jclepro.2022.130428 doi /cbs_pica/cbs_olc/import_discovery/elsevier/einzuspielen/GBV00000000001802.pica (DE-627)ELV05667838X (ELSEVIER)S0959-6526(22)00074-9 DE-627 ger DE-627 rakwb eng 540 VZ 35.18 bkl Yu, Yue verfasserin aut Chrome-free synergistic tanning system based on biomass-derived hydroxycarboxylic acid–zirconium complexes 2022transfer abstract nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier Reducing or eliminating chrome pollution from leather processing is an essential task for the sustainable development of leather industry. Herein, we established a chrome-free tanning system based on biomass-derived hydroxycarboxylic acid (BHCA)–zirconium complexes. The synergistic tanning mechanism of BHCA and zirconium salt was investigated by exploring the interaction among BHCA, zirconium salt, and collagen fiber (CF). Results show that the hydroxyl and carboxyl groups in BHCA coordinated with zirconium ion to form Zr complexes, while BHCA caused changes in the morphology and conformation of collagen through ionic and hydrogen bonding. The order of the contribution of active groups in CF involved in the coordination reaction in BHCA–Zr tanning presented as amino group > carboxyl group > hydroxyl group. Moreover, BHCA with multiple functional groups and large molecular size provided indispensable non-covalent binding sites for BHCA–Zr tanning system, resulting in the formation of multi-point crosslinking network structure among CFs. Thus, BHCA–Zr exhibited an obvious synergistic effect, and its tanning performance was remarkably better than that of conventional lactic acid–zirconium complexes. This work provides new insights into the development of novel chrome-free eco-tanning system. Reducing or eliminating chrome pollution from leather processing is an essential task for the sustainable development of leather industry. Herein, we established a chrome-free tanning system based on biomass-derived hydroxycarboxylic acid (BHCA)–zirconium complexes. The synergistic tanning mechanism of BHCA and zirconium salt was investigated by exploring the interaction among BHCA, zirconium salt, and collagen fiber (CF). Results show that the hydroxyl and carboxyl groups in BHCA coordinated with zirconium ion to form Zr complexes, while BHCA caused changes in the morphology and conformation of collagen through ionic and hydrogen bonding. The order of the contribution of active groups in CF involved in the coordination reaction in BHCA–Zr tanning presented as amino group > carboxyl group > hydroxyl group. Moreover, BHCA with multiple functional groups and large molecular size provided indispensable non-covalent binding sites for BHCA–Zr tanning system, resulting in the formation of multi-point crosslinking network structure among CFs. Thus, BHCA–Zr exhibited an obvious synergistic effect, and its tanning performance was remarkably better than that of conventional lactic acid–zirconium complexes. This work provides new insights into the development of novel chrome-free eco-tanning system. Zirconium Elsevier Ligand Elsevier Leather Elsevier Chrome-free tanning Elsevier Synergistic effect Elsevier Wang, Hui oth Wang, Ya-nan oth Zhou, Jianfei oth Shi, Bi oth Enthalten in Elsevier Science Rajendiran, Rajmohan ELSEVIER Self-assembled 3D hierarchical MnCO 2020 Amsterdam [u.a.] (DE-627)ELV003750353 volume:336 year:2022 day:15 month:02 pages:0 https://doi.org/10.1016/j.jclepro.2022.130428 Volltext GBV_USEFLAG_U GBV_ELV SYSFLAG_U 35.18 Kolloidchemie Grenzflächenchemie VZ AR 336 2022 15 0215 0 |
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Enthalten in Self-assembled 3D hierarchical MnCO Amsterdam [u.a.] volume:336 year:2022 day:15 month:02 pages:0 |
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Herein, we established a chrome-free tanning system based on biomass-derived hydroxycarboxylic acid (BHCA)–zirconium complexes. The synergistic tanning mechanism of BHCA and zirconium salt was investigated by exploring the interaction among BHCA, zirconium salt, and collagen fiber (CF). Results show that the hydroxyl and carboxyl groups in BHCA coordinated with zirconium ion to form Zr complexes, while BHCA caused changes in the morphology and conformation of collagen through ionic and hydrogen bonding. The order of the contribution of active groups in CF involved in the coordination reaction in BHCA–Zr tanning presented as amino group > carboxyl group > hydroxyl group. Moreover, BHCA with multiple functional groups and large molecular size provided indispensable non-covalent binding sites for BHCA–Zr tanning system, resulting in the formation of multi-point crosslinking network structure among CFs. Thus, BHCA–Zr exhibited an obvious synergistic effect, and its tanning performance was remarkably better than that of conventional lactic acid–zirconium complexes. This work provides new insights into the development of novel chrome-free eco-tanning system.</subfield></datafield><datafield tag="520" ind1=" " ind2=" "><subfield code="a">Reducing or eliminating chrome pollution from leather processing is an essential task for the sustainable development of leather industry. Herein, we established a chrome-free tanning system based on biomass-derived hydroxycarboxylic acid (BHCA)–zirconium complexes. The synergistic tanning mechanism of BHCA and zirconium salt was investigated by exploring the interaction among BHCA, zirconium salt, and collagen fiber (CF). Results show that the hydroxyl and carboxyl groups in BHCA coordinated with zirconium ion to form Zr complexes, while BHCA caused changes in the morphology and conformation of collagen through ionic and hydrogen bonding. 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chrome-free synergistic tanning system based on biomass-derived hydroxycarboxylic acid–zirconium complexes |
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Chrome-free synergistic tanning system based on biomass-derived hydroxycarboxylic acid–zirconium complexes |
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Reducing or eliminating chrome pollution from leather processing is an essential task for the sustainable development of leather industry. Herein, we established a chrome-free tanning system based on biomass-derived hydroxycarboxylic acid (BHCA)–zirconium complexes. The synergistic tanning mechanism of BHCA and zirconium salt was investigated by exploring the interaction among BHCA, zirconium salt, and collagen fiber (CF). Results show that the hydroxyl and carboxyl groups in BHCA coordinated with zirconium ion to form Zr complexes, while BHCA caused changes in the morphology and conformation of collagen through ionic and hydrogen bonding. The order of the contribution of active groups in CF involved in the coordination reaction in BHCA–Zr tanning presented as amino group > carboxyl group > hydroxyl group. Moreover, BHCA with multiple functional groups and large molecular size provided indispensable non-covalent binding sites for BHCA–Zr tanning system, resulting in the formation of multi-point crosslinking network structure among CFs. Thus, BHCA–Zr exhibited an obvious synergistic effect, and its tanning performance was remarkably better than that of conventional lactic acid–zirconium complexes. This work provides new insights into the development of novel chrome-free eco-tanning system. |
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Reducing or eliminating chrome pollution from leather processing is an essential task for the sustainable development of leather industry. Herein, we established a chrome-free tanning system based on biomass-derived hydroxycarboxylic acid (BHCA)–zirconium complexes. The synergistic tanning mechanism of BHCA and zirconium salt was investigated by exploring the interaction among BHCA, zirconium salt, and collagen fiber (CF). Results show that the hydroxyl and carboxyl groups in BHCA coordinated with zirconium ion to form Zr complexes, while BHCA caused changes in the morphology and conformation of collagen through ionic and hydrogen bonding. The order of the contribution of active groups in CF involved in the coordination reaction in BHCA–Zr tanning presented as amino group > carboxyl group > hydroxyl group. Moreover, BHCA with multiple functional groups and large molecular size provided indispensable non-covalent binding sites for BHCA–Zr tanning system, resulting in the formation of multi-point crosslinking network structure among CFs. Thus, BHCA–Zr exhibited an obvious synergistic effect, and its tanning performance was remarkably better than that of conventional lactic acid–zirconium complexes. This work provides new insights into the development of novel chrome-free eco-tanning system. |
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Reducing or eliminating chrome pollution from leather processing is an essential task for the sustainable development of leather industry. Herein, we established a chrome-free tanning system based on biomass-derived hydroxycarboxylic acid (BHCA)–zirconium complexes. The synergistic tanning mechanism of BHCA and zirconium salt was investigated by exploring the interaction among BHCA, zirconium salt, and collagen fiber (CF). Results show that the hydroxyl and carboxyl groups in BHCA coordinated with zirconium ion to form Zr complexes, while BHCA caused changes in the morphology and conformation of collagen through ionic and hydrogen bonding. The order of the contribution of active groups in CF involved in the coordination reaction in BHCA–Zr tanning presented as amino group > carboxyl group > hydroxyl group. Moreover, BHCA with multiple functional groups and large molecular size provided indispensable non-covalent binding sites for BHCA–Zr tanning system, resulting in the formation of multi-point crosslinking network structure among CFs. Thus, BHCA–Zr exhibited an obvious synergistic effect, and its tanning performance was remarkably better than that of conventional lactic acid–zirconium complexes. This work provides new insights into the development of novel chrome-free eco-tanning system. |
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