A High Solid Content Bioadhesive Derived from Soybean Meal and Egg White: Preparation and Properties
Abstract Soy protein-based adhesives (SPAs) inherently possess low solid content and poor water resistance. Chemical crosslinking can effectively improve the water resistance, but will also contribute to the low solid content. In this study, egg white (EW) was introduced to soybean meal (SM) adhesiv...
Ausführliche Beschreibung
Gespeichert in:
| Autor*in: |
Luo, Jianlin [verfasserIn] |
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| Format: |
Artikel |
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| Sprache: |
Englisch |
| Erschienen: |
2016 |
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| Schlagwörter: |
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| Anmerkung: |
© Springer Science+Business Media New York 2016 |
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| Übergeordnetes Werk: |
Enthalten in: Journal of polymers and the environment - Springer US, 2000, 25(2016), 3 vom: 20. Okt., Seite 948-959 |
|---|---|
| Übergeordnetes Werk: |
volume:25 ; year:2016 ; number:3 ; day:20 ; month:10 ; pages:948-959 |
| Links: |
|---|
| DOI / URN: |
10.1007/s10924-016-0875-3 |
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| Katalog-ID: |
OLC2067001604 |
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| 520 | |a Abstract Soy protein-based adhesives (SPAs) inherently possess low solid content and poor water resistance. Chemical crosslinking can effectively improve the water resistance, but will also contribute to the low solid content. In this study, egg white (EW) was introduced to soybean meal (SM) adhesive as a substitute for water, followed by crosslinking with triglycidylamine (TGA) to develop a high-performance bioadhesive with a high solid content. The solid content, rheology, water resistance, functional groups, crystallinity, thermal degradation behavior, and fracture surface micrographs of the resulting adhesives were investigated. Three-ply plywood was fabricated and its wet shear strength was tested. The results indicated that 57.1 % EW increased the solid content of SM adhesive up to 43.32 %, while maintaining an appropriate viscosity for application. The water resistance of SM adhesive was improved by 36.0 % as optimal EW addition amount of 57.1 % was introduced. The results were attributed to the following observations: (1) EW further increased the crosslinking density of cured adhesive by involving in the crosslinking reaction. (2) EW promoted the transformation from small molecule element to skeleton structure of the cured system. (3) The cured SM/EW possessed a dense and smooth crosslinking structure, successfully preventing the water intrusion. The optimal adhesive formulation provided the plywood with the highest wet shear strength of 1.14 MPa which was improved by 153.3 and 80.9 % compared with that bonded by the SM and SM/TGA adhesive. The improvement can be explained by: (1) high solid content of SM/EW adhesive reduced the water evaporation, effectively limiting the damage to the mechanical properties of plywood. (2) The cured SM/EW adhesive possessed higher water resistance. (3) The appropriate viscosity of adhesive formed more interlockering with wood. The results of wet shear strength also indicated that the performance of new SM/EW bioadhesive was superior to that of conventional urea–formaldehyde (UF) resin and PAE cross-linked SM adhesive, and was comparable to that of melamine modified UF resin. The high solid content of the SM/EW bioadhesive combined two typical vegetable and animal proteins and pushed the performance limit of low solid content SPAs. | ||
| 650 | 4 | |a Soybean meal-based bioadhesive | |
| 650 | 4 | |a Egg white | |
| 650 | 4 | |a Chemical crosslinking | |
| 650 | 4 | |a Solid content | |
| 650 | 4 | |a Water resistance | |
| 700 | 1 | |a Li, Longyu |4 aut | |
| 700 | 1 | |a Luo, Jing |4 aut | |
| 700 | 1 | |a Li, Xiaona |4 aut | |
| 700 | 1 | |a Li, Kun |4 aut | |
| 700 | 1 | |a Gao, Qiang |4 aut | |
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10.1007/s10924-016-0875-3 doi (DE-627)OLC2067001604 (DE-He213)s10924-016-0875-3-p DE-627 ger DE-627 rakwb eng 660 VZ 58.53$jAbfallwirtschaft bkl 58.52$jTechnischer Bodenschutz$jtechnischer Gewässerschutz bkl 43.50$jUmweltbelastungen bkl Luo, Jianlin verfasserin aut A High Solid Content Bioadhesive Derived from Soybean Meal and Egg White: Preparation and Properties 2016 Text txt rdacontent ohne Hilfsmittel zu benutzen n rdamedia Band nc rdacarrier © Springer Science+Business Media New York 2016 Abstract Soy protein-based adhesives (SPAs) inherently possess low solid content and poor water resistance. Chemical crosslinking can effectively improve the water resistance, but will also contribute to the low solid content. In this study, egg white (EW) was introduced to soybean meal (SM) adhesive as a substitute for water, followed by crosslinking with triglycidylamine (TGA) to develop a high-performance bioadhesive with a high solid content. The solid content, rheology, water resistance, functional groups, crystallinity, thermal degradation behavior, and fracture surface micrographs of the resulting adhesives were investigated. Three-ply plywood was fabricated and its wet shear strength was tested. The results indicated that 57.1 % EW increased the solid content of SM adhesive up to 43.32 %, while maintaining an appropriate viscosity for application. The water resistance of SM adhesive was improved by 36.0 % as optimal EW addition amount of 57.1 % was introduced. The results were attributed to the following observations: (1) EW further increased the crosslinking density of cured adhesive by involving in the crosslinking reaction. (2) EW promoted the transformation from small molecule element to skeleton structure of the cured system. (3) The cured SM/EW possessed a dense and smooth crosslinking structure, successfully preventing the water intrusion. The optimal adhesive formulation provided the plywood with the highest wet shear strength of 1.14 MPa which was improved by 153.3 and 80.9 % compared with that bonded by the SM and SM/TGA adhesive. The improvement can be explained by: (1) high solid content of SM/EW adhesive reduced the water evaporation, effectively limiting the damage to the mechanical properties of plywood. (2) The cured SM/EW adhesive possessed higher water resistance. (3) The appropriate viscosity of adhesive formed more interlockering with wood. The results of wet shear strength also indicated that the performance of new SM/EW bioadhesive was superior to that of conventional urea–formaldehyde (UF) resin and PAE cross-linked SM adhesive, and was comparable to that of melamine modified UF resin. The high solid content of the SM/EW bioadhesive combined two typical vegetable and animal proteins and pushed the performance limit of low solid content SPAs. Soybean meal-based bioadhesive Egg white Chemical crosslinking Solid content Water resistance Li, Longyu aut Luo, Jing aut Li, Xiaona aut Li, Kun aut Gao, Qiang aut Enthalten in Journal of polymers and the environment Springer US, 2000 25(2016), 3 vom: 20. Okt., Seite 948-959 (DE-627)325700176 (DE-600)2039366-0 (DE-576)9325700174 1566-2543 nnns volume:25 year:2016 number:3 day:20 month:10 pages:948-959 https://doi.org/10.1007/s10924-016-0875-3 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_OLC SSG-OLC-TEC SSG-OLC-CHE SSG-OLC-PHA SSG-OLC-DE-84 GBV_ILN_70 GBV_ILN_4012 58.53$jAbfallwirtschaft VZ 106418831 (DE-625)106418831 58.52$jTechnischer Bodenschutz$jtechnischer Gewässerschutz VZ 106420747 (DE-625)106420747 43.50$jUmweltbelastungen VZ 106416782 (DE-625)106416782 AR 25 2016 3 20 10 948-959 |
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10.1007/s10924-016-0875-3 doi (DE-627)OLC2067001604 (DE-He213)s10924-016-0875-3-p DE-627 ger DE-627 rakwb eng 660 VZ 58.53$jAbfallwirtschaft bkl 58.52$jTechnischer Bodenschutz$jtechnischer Gewässerschutz bkl 43.50$jUmweltbelastungen bkl Luo, Jianlin verfasserin aut A High Solid Content Bioadhesive Derived from Soybean Meal and Egg White: Preparation and Properties 2016 Text txt rdacontent ohne Hilfsmittel zu benutzen n rdamedia Band nc rdacarrier © Springer Science+Business Media New York 2016 Abstract Soy protein-based adhesives (SPAs) inherently possess low solid content and poor water resistance. Chemical crosslinking can effectively improve the water resistance, but will also contribute to the low solid content. In this study, egg white (EW) was introduced to soybean meal (SM) adhesive as a substitute for water, followed by crosslinking with triglycidylamine (TGA) to develop a high-performance bioadhesive with a high solid content. The solid content, rheology, water resistance, functional groups, crystallinity, thermal degradation behavior, and fracture surface micrographs of the resulting adhesives were investigated. Three-ply plywood was fabricated and its wet shear strength was tested. The results indicated that 57.1 % EW increased the solid content of SM adhesive up to 43.32 %, while maintaining an appropriate viscosity for application. The water resistance of SM adhesive was improved by 36.0 % as optimal EW addition amount of 57.1 % was introduced. The results were attributed to the following observations: (1) EW further increased the crosslinking density of cured adhesive by involving in the crosslinking reaction. (2) EW promoted the transformation from small molecule element to skeleton structure of the cured system. (3) The cured SM/EW possessed a dense and smooth crosslinking structure, successfully preventing the water intrusion. The optimal adhesive formulation provided the plywood with the highest wet shear strength of 1.14 MPa which was improved by 153.3 and 80.9 % compared with that bonded by the SM and SM/TGA adhesive. The improvement can be explained by: (1) high solid content of SM/EW adhesive reduced the water evaporation, effectively limiting the damage to the mechanical properties of plywood. (2) The cured SM/EW adhesive possessed higher water resistance. (3) The appropriate viscosity of adhesive formed more interlockering with wood. The results of wet shear strength also indicated that the performance of new SM/EW bioadhesive was superior to that of conventional urea–formaldehyde (UF) resin and PAE cross-linked SM adhesive, and was comparable to that of melamine modified UF resin. The high solid content of the SM/EW bioadhesive combined two typical vegetable and animal proteins and pushed the performance limit of low solid content SPAs. Soybean meal-based bioadhesive Egg white Chemical crosslinking Solid content Water resistance Li, Longyu aut Luo, Jing aut Li, Xiaona aut Li, Kun aut Gao, Qiang aut Enthalten in Journal of polymers and the environment Springer US, 2000 25(2016), 3 vom: 20. Okt., Seite 948-959 (DE-627)325700176 (DE-600)2039366-0 (DE-576)9325700174 1566-2543 nnns volume:25 year:2016 number:3 day:20 month:10 pages:948-959 https://doi.org/10.1007/s10924-016-0875-3 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_OLC SSG-OLC-TEC SSG-OLC-CHE SSG-OLC-PHA SSG-OLC-DE-84 GBV_ILN_70 GBV_ILN_4012 58.53$jAbfallwirtschaft VZ 106418831 (DE-625)106418831 58.52$jTechnischer Bodenschutz$jtechnischer Gewässerschutz VZ 106420747 (DE-625)106420747 43.50$jUmweltbelastungen VZ 106416782 (DE-625)106416782 AR 25 2016 3 20 10 948-959 |
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10.1007/s10924-016-0875-3 doi (DE-627)OLC2067001604 (DE-He213)s10924-016-0875-3-p DE-627 ger DE-627 rakwb eng 660 VZ 58.53$jAbfallwirtschaft bkl 58.52$jTechnischer Bodenschutz$jtechnischer Gewässerschutz bkl 43.50$jUmweltbelastungen bkl Luo, Jianlin verfasserin aut A High Solid Content Bioadhesive Derived from Soybean Meal and Egg White: Preparation and Properties 2016 Text txt rdacontent ohne Hilfsmittel zu benutzen n rdamedia Band nc rdacarrier © Springer Science+Business Media New York 2016 Abstract Soy protein-based adhesives (SPAs) inherently possess low solid content and poor water resistance. Chemical crosslinking can effectively improve the water resistance, but will also contribute to the low solid content. In this study, egg white (EW) was introduced to soybean meal (SM) adhesive as a substitute for water, followed by crosslinking with triglycidylamine (TGA) to develop a high-performance bioadhesive with a high solid content. The solid content, rheology, water resistance, functional groups, crystallinity, thermal degradation behavior, and fracture surface micrographs of the resulting adhesives were investigated. Three-ply plywood was fabricated and its wet shear strength was tested. The results indicated that 57.1 % EW increased the solid content of SM adhesive up to 43.32 %, while maintaining an appropriate viscosity for application. The water resistance of SM adhesive was improved by 36.0 % as optimal EW addition amount of 57.1 % was introduced. The results were attributed to the following observations: (1) EW further increased the crosslinking density of cured adhesive by involving in the crosslinking reaction. (2) EW promoted the transformation from small molecule element to skeleton structure of the cured system. (3) The cured SM/EW possessed a dense and smooth crosslinking structure, successfully preventing the water intrusion. The optimal adhesive formulation provided the plywood with the highest wet shear strength of 1.14 MPa which was improved by 153.3 and 80.9 % compared with that bonded by the SM and SM/TGA adhesive. The improvement can be explained by: (1) high solid content of SM/EW adhesive reduced the water evaporation, effectively limiting the damage to the mechanical properties of plywood. (2) The cured SM/EW adhesive possessed higher water resistance. (3) The appropriate viscosity of adhesive formed more interlockering with wood. The results of wet shear strength also indicated that the performance of new SM/EW bioadhesive was superior to that of conventional urea–formaldehyde (UF) resin and PAE cross-linked SM adhesive, and was comparable to that of melamine modified UF resin. The high solid content of the SM/EW bioadhesive combined two typical vegetable and animal proteins and pushed the performance limit of low solid content SPAs. Soybean meal-based bioadhesive Egg white Chemical crosslinking Solid content Water resistance Li, Longyu aut Luo, Jing aut Li, Xiaona aut Li, Kun aut Gao, Qiang aut Enthalten in Journal of polymers and the environment Springer US, 2000 25(2016), 3 vom: 20. Okt., Seite 948-959 (DE-627)325700176 (DE-600)2039366-0 (DE-576)9325700174 1566-2543 nnns volume:25 year:2016 number:3 day:20 month:10 pages:948-959 https://doi.org/10.1007/s10924-016-0875-3 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_OLC SSG-OLC-TEC SSG-OLC-CHE SSG-OLC-PHA SSG-OLC-DE-84 GBV_ILN_70 GBV_ILN_4012 58.53$jAbfallwirtschaft VZ 106418831 (DE-625)106418831 58.52$jTechnischer Bodenschutz$jtechnischer Gewässerschutz VZ 106420747 (DE-625)106420747 43.50$jUmweltbelastungen VZ 106416782 (DE-625)106416782 AR 25 2016 3 20 10 948-959 |
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10.1007/s10924-016-0875-3 doi (DE-627)OLC2067001604 (DE-He213)s10924-016-0875-3-p DE-627 ger DE-627 rakwb eng 660 VZ 58.53$jAbfallwirtschaft bkl 58.52$jTechnischer Bodenschutz$jtechnischer Gewässerschutz bkl 43.50$jUmweltbelastungen bkl Luo, Jianlin verfasserin aut A High Solid Content Bioadhesive Derived from Soybean Meal and Egg White: Preparation and Properties 2016 Text txt rdacontent ohne Hilfsmittel zu benutzen n rdamedia Band nc rdacarrier © Springer Science+Business Media New York 2016 Abstract Soy protein-based adhesives (SPAs) inherently possess low solid content and poor water resistance. Chemical crosslinking can effectively improve the water resistance, but will also contribute to the low solid content. In this study, egg white (EW) was introduced to soybean meal (SM) adhesive as a substitute for water, followed by crosslinking with triglycidylamine (TGA) to develop a high-performance bioadhesive with a high solid content. The solid content, rheology, water resistance, functional groups, crystallinity, thermal degradation behavior, and fracture surface micrographs of the resulting adhesives were investigated. Three-ply plywood was fabricated and its wet shear strength was tested. The results indicated that 57.1 % EW increased the solid content of SM adhesive up to 43.32 %, while maintaining an appropriate viscosity for application. The water resistance of SM adhesive was improved by 36.0 % as optimal EW addition amount of 57.1 % was introduced. The results were attributed to the following observations: (1) EW further increased the crosslinking density of cured adhesive by involving in the crosslinking reaction. (2) EW promoted the transformation from small molecule element to skeleton structure of the cured system. (3) The cured SM/EW possessed a dense and smooth crosslinking structure, successfully preventing the water intrusion. The optimal adhesive formulation provided the plywood with the highest wet shear strength of 1.14 MPa which was improved by 153.3 and 80.9 % compared with that bonded by the SM and SM/TGA adhesive. The improvement can be explained by: (1) high solid content of SM/EW adhesive reduced the water evaporation, effectively limiting the damage to the mechanical properties of plywood. (2) The cured SM/EW adhesive possessed higher water resistance. (3) The appropriate viscosity of adhesive formed more interlockering with wood. The results of wet shear strength also indicated that the performance of new SM/EW bioadhesive was superior to that of conventional urea–formaldehyde (UF) resin and PAE cross-linked SM adhesive, and was comparable to that of melamine modified UF resin. The high solid content of the SM/EW bioadhesive combined two typical vegetable and animal proteins and pushed the performance limit of low solid content SPAs. Soybean meal-based bioadhesive Egg white Chemical crosslinking Solid content Water resistance Li, Longyu aut Luo, Jing aut Li, Xiaona aut Li, Kun aut Gao, Qiang aut Enthalten in Journal of polymers and the environment Springer US, 2000 25(2016), 3 vom: 20. Okt., Seite 948-959 (DE-627)325700176 (DE-600)2039366-0 (DE-576)9325700174 1566-2543 nnns volume:25 year:2016 number:3 day:20 month:10 pages:948-959 https://doi.org/10.1007/s10924-016-0875-3 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_OLC SSG-OLC-TEC SSG-OLC-CHE SSG-OLC-PHA SSG-OLC-DE-84 GBV_ILN_70 GBV_ILN_4012 58.53$jAbfallwirtschaft VZ 106418831 (DE-625)106418831 58.52$jTechnischer Bodenschutz$jtechnischer Gewässerschutz VZ 106420747 (DE-625)106420747 43.50$jUmweltbelastungen VZ 106416782 (DE-625)106416782 AR 25 2016 3 20 10 948-959 |
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10.1007/s10924-016-0875-3 doi (DE-627)OLC2067001604 (DE-He213)s10924-016-0875-3-p DE-627 ger DE-627 rakwb eng 660 VZ 58.53$jAbfallwirtschaft bkl 58.52$jTechnischer Bodenschutz$jtechnischer Gewässerschutz bkl 43.50$jUmweltbelastungen bkl Luo, Jianlin verfasserin aut A High Solid Content Bioadhesive Derived from Soybean Meal and Egg White: Preparation and Properties 2016 Text txt rdacontent ohne Hilfsmittel zu benutzen n rdamedia Band nc rdacarrier © Springer Science+Business Media New York 2016 Abstract Soy protein-based adhesives (SPAs) inherently possess low solid content and poor water resistance. Chemical crosslinking can effectively improve the water resistance, but will also contribute to the low solid content. In this study, egg white (EW) was introduced to soybean meal (SM) adhesive as a substitute for water, followed by crosslinking with triglycidylamine (TGA) to develop a high-performance bioadhesive with a high solid content. The solid content, rheology, water resistance, functional groups, crystallinity, thermal degradation behavior, and fracture surface micrographs of the resulting adhesives were investigated. Three-ply plywood was fabricated and its wet shear strength was tested. The results indicated that 57.1 % EW increased the solid content of SM adhesive up to 43.32 %, while maintaining an appropriate viscosity for application. The water resistance of SM adhesive was improved by 36.0 % as optimal EW addition amount of 57.1 % was introduced. The results were attributed to the following observations: (1) EW further increased the crosslinking density of cured adhesive by involving in the crosslinking reaction. (2) EW promoted the transformation from small molecule element to skeleton structure of the cured system. (3) The cured SM/EW possessed a dense and smooth crosslinking structure, successfully preventing the water intrusion. The optimal adhesive formulation provided the plywood with the highest wet shear strength of 1.14 MPa which was improved by 153.3 and 80.9 % compared with that bonded by the SM and SM/TGA adhesive. The improvement can be explained by: (1) high solid content of SM/EW adhesive reduced the water evaporation, effectively limiting the damage to the mechanical properties of plywood. (2) The cured SM/EW adhesive possessed higher water resistance. (3) The appropriate viscosity of adhesive formed more interlockering with wood. The results of wet shear strength also indicated that the performance of new SM/EW bioadhesive was superior to that of conventional urea–formaldehyde (UF) resin and PAE cross-linked SM adhesive, and was comparable to that of melamine modified UF resin. The high solid content of the SM/EW bioadhesive combined two typical vegetable and animal proteins and pushed the performance limit of low solid content SPAs. Soybean meal-based bioadhesive Egg white Chemical crosslinking Solid content Water resistance Li, Longyu aut Luo, Jing aut Li, Xiaona aut Li, Kun aut Gao, Qiang aut Enthalten in Journal of polymers and the environment Springer US, 2000 25(2016), 3 vom: 20. Okt., Seite 948-959 (DE-627)325700176 (DE-600)2039366-0 (DE-576)9325700174 1566-2543 nnns volume:25 year:2016 number:3 day:20 month:10 pages:948-959 https://doi.org/10.1007/s10924-016-0875-3 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_OLC SSG-OLC-TEC SSG-OLC-CHE SSG-OLC-PHA SSG-OLC-DE-84 GBV_ILN_70 GBV_ILN_4012 58.53$jAbfallwirtschaft VZ 106418831 (DE-625)106418831 58.52$jTechnischer Bodenschutz$jtechnischer Gewässerschutz VZ 106420747 (DE-625)106420747 43.50$jUmweltbelastungen VZ 106416782 (DE-625)106416782 AR 25 2016 3 20 10 948-959 |
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Chemical crosslinking can effectively improve the water resistance, but will also contribute to the low solid content. In this study, egg white (EW) was introduced to soybean meal (SM) adhesive as a substitute for water, followed by crosslinking with triglycidylamine (TGA) to develop a high-performance bioadhesive with a high solid content. The solid content, rheology, water resistance, functional groups, crystallinity, thermal degradation behavior, and fracture surface micrographs of the resulting adhesives were investigated. Three-ply plywood was fabricated and its wet shear strength was tested. The results indicated that 57.1 % EW increased the solid content of SM adhesive up to 43.32 %, while maintaining an appropriate viscosity for application. The water resistance of SM adhesive was improved by 36.0 % as optimal EW addition amount of 57.1 % was introduced. The results were attributed to the following observations: (1) EW further increased the crosslinking density of cured adhesive by involving in the crosslinking reaction. (2) EW promoted the transformation from small molecule element to skeleton structure of the cured system. (3) The cured SM/EW possessed a dense and smooth crosslinking structure, successfully preventing the water intrusion. The optimal adhesive formulation provided the plywood with the highest wet shear strength of 1.14 MPa which was improved by 153.3 and 80.9 % compared with that bonded by the SM and SM/TGA adhesive. The improvement can be explained by: (1) high solid content of SM/EW adhesive reduced the water evaporation, effectively limiting the damage to the mechanical properties of plywood. (2) The cured SM/EW adhesive possessed higher water resistance. (3) The appropriate viscosity of adhesive formed more interlockering with wood. The results of wet shear strength also indicated that the performance of new SM/EW bioadhesive was superior to that of conventional urea–formaldehyde (UF) resin and PAE cross-linked SM adhesive, and was comparable to that of melamine modified UF resin. 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Luo, Jianlin |
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Luo, Jianlin ddc 660 bkl 58.53$jAbfallwirtschaft bkl 58.52$jTechnischer Bodenschutz$jtechnischer Gewässerschutz bkl 43.50$jUmweltbelastungen misc Soybean meal-based bioadhesive misc Egg white misc Chemical crosslinking misc Solid content misc Water resistance A High Solid Content Bioadhesive Derived from Soybean Meal and Egg White: Preparation and Properties |
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660 VZ 58.53$jAbfallwirtschaft bkl 58.52$jTechnischer Bodenschutz$jtechnischer Gewässerschutz bkl 43.50$jUmweltbelastungen bkl A High Solid Content Bioadhesive Derived from Soybean Meal and Egg White: Preparation and Properties Soybean meal-based bioadhesive Egg white Chemical crosslinking Solid content Water resistance |
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ddc 660 bkl 58.53$jAbfallwirtschaft bkl 58.52$jTechnischer Bodenschutz$jtechnischer Gewässerschutz bkl 43.50$jUmweltbelastungen misc Soybean meal-based bioadhesive misc Egg white misc Chemical crosslinking misc Solid content misc Water resistance |
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a high solid content bioadhesive derived from soybean meal and egg white: preparation and properties |
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A High Solid Content Bioadhesive Derived from Soybean Meal and Egg White: Preparation and Properties |
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Abstract Soy protein-based adhesives (SPAs) inherently possess low solid content and poor water resistance. Chemical crosslinking can effectively improve the water resistance, but will also contribute to the low solid content. In this study, egg white (EW) was introduced to soybean meal (SM) adhesive as a substitute for water, followed by crosslinking with triglycidylamine (TGA) to develop a high-performance bioadhesive with a high solid content. The solid content, rheology, water resistance, functional groups, crystallinity, thermal degradation behavior, and fracture surface micrographs of the resulting adhesives were investigated. Three-ply plywood was fabricated and its wet shear strength was tested. The results indicated that 57.1 % EW increased the solid content of SM adhesive up to 43.32 %, while maintaining an appropriate viscosity for application. The water resistance of SM adhesive was improved by 36.0 % as optimal EW addition amount of 57.1 % was introduced. The results were attributed to the following observations: (1) EW further increased the crosslinking density of cured adhesive by involving in the crosslinking reaction. (2) EW promoted the transformation from small molecule element to skeleton structure of the cured system. (3) The cured SM/EW possessed a dense and smooth crosslinking structure, successfully preventing the water intrusion. The optimal adhesive formulation provided the plywood with the highest wet shear strength of 1.14 MPa which was improved by 153.3 and 80.9 % compared with that bonded by the SM and SM/TGA adhesive. The improvement can be explained by: (1) high solid content of SM/EW adhesive reduced the water evaporation, effectively limiting the damage to the mechanical properties of plywood. (2) The cured SM/EW adhesive possessed higher water resistance. (3) The appropriate viscosity of adhesive formed more interlockering with wood. The results of wet shear strength also indicated that the performance of new SM/EW bioadhesive was superior to that of conventional urea–formaldehyde (UF) resin and PAE cross-linked SM adhesive, and was comparable to that of melamine modified UF resin. The high solid content of the SM/EW bioadhesive combined two typical vegetable and animal proteins and pushed the performance limit of low solid content SPAs. © Springer Science+Business Media New York 2016 |
| abstractGer |
Abstract Soy protein-based adhesives (SPAs) inherently possess low solid content and poor water resistance. Chemical crosslinking can effectively improve the water resistance, but will also contribute to the low solid content. In this study, egg white (EW) was introduced to soybean meal (SM) adhesive as a substitute for water, followed by crosslinking with triglycidylamine (TGA) to develop a high-performance bioadhesive with a high solid content. The solid content, rheology, water resistance, functional groups, crystallinity, thermal degradation behavior, and fracture surface micrographs of the resulting adhesives were investigated. Three-ply plywood was fabricated and its wet shear strength was tested. The results indicated that 57.1 % EW increased the solid content of SM adhesive up to 43.32 %, while maintaining an appropriate viscosity for application. The water resistance of SM adhesive was improved by 36.0 % as optimal EW addition amount of 57.1 % was introduced. The results were attributed to the following observations: (1) EW further increased the crosslinking density of cured adhesive by involving in the crosslinking reaction. (2) EW promoted the transformation from small molecule element to skeleton structure of the cured system. (3) The cured SM/EW possessed a dense and smooth crosslinking structure, successfully preventing the water intrusion. The optimal adhesive formulation provided the plywood with the highest wet shear strength of 1.14 MPa which was improved by 153.3 and 80.9 % compared with that bonded by the SM and SM/TGA adhesive. The improvement can be explained by: (1) high solid content of SM/EW adhesive reduced the water evaporation, effectively limiting the damage to the mechanical properties of plywood. (2) The cured SM/EW adhesive possessed higher water resistance. (3) The appropriate viscosity of adhesive formed more interlockering with wood. The results of wet shear strength also indicated that the performance of new SM/EW bioadhesive was superior to that of conventional urea–formaldehyde (UF) resin and PAE cross-linked SM adhesive, and was comparable to that of melamine modified UF resin. The high solid content of the SM/EW bioadhesive combined two typical vegetable and animal proteins and pushed the performance limit of low solid content SPAs. © Springer Science+Business Media New York 2016 |
| abstract_unstemmed |
Abstract Soy protein-based adhesives (SPAs) inherently possess low solid content and poor water resistance. Chemical crosslinking can effectively improve the water resistance, but will also contribute to the low solid content. In this study, egg white (EW) was introduced to soybean meal (SM) adhesive as a substitute for water, followed by crosslinking with triglycidylamine (TGA) to develop a high-performance bioadhesive with a high solid content. The solid content, rheology, water resistance, functional groups, crystallinity, thermal degradation behavior, and fracture surface micrographs of the resulting adhesives were investigated. Three-ply plywood was fabricated and its wet shear strength was tested. The results indicated that 57.1 % EW increased the solid content of SM adhesive up to 43.32 %, while maintaining an appropriate viscosity for application. The water resistance of SM adhesive was improved by 36.0 % as optimal EW addition amount of 57.1 % was introduced. The results were attributed to the following observations: (1) EW further increased the crosslinking density of cured adhesive by involving in the crosslinking reaction. (2) EW promoted the transformation from small molecule element to skeleton structure of the cured system. (3) The cured SM/EW possessed a dense and smooth crosslinking structure, successfully preventing the water intrusion. The optimal adhesive formulation provided the plywood with the highest wet shear strength of 1.14 MPa which was improved by 153.3 and 80.9 % compared with that bonded by the SM and SM/TGA adhesive. The improvement can be explained by: (1) high solid content of SM/EW adhesive reduced the water evaporation, effectively limiting the damage to the mechanical properties of plywood. (2) The cured SM/EW adhesive possessed higher water resistance. (3) The appropriate viscosity of adhesive formed more interlockering with wood. The results of wet shear strength also indicated that the performance of new SM/EW bioadhesive was superior to that of conventional urea–formaldehyde (UF) resin and PAE cross-linked SM adhesive, and was comparable to that of melamine modified UF resin. The high solid content of the SM/EW bioadhesive combined two typical vegetable and animal proteins and pushed the performance limit of low solid content SPAs. © Springer Science+Business Media New York 2016 |
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The results of wet shear strength also indicated that the performance of new SM/EW bioadhesive was superior to that of conventional urea–formaldehyde (UF) resin and PAE cross-linked SM adhesive, and was comparable to that of melamine modified UF resin. 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