Tough, waterproof, and mildew-resistant fully biobased soybean protein adhesives enhanced by furfuryl alcohol with dynamic covalent linkages

Aladejana, John Tosin; Zeng, Guodong; Zhang, Fudong; Kuang, Li; Li, Xiaona; Dong, Youming; Li, Jianzhang

doi:10.1016/j.indcrop.2023.116759

Cited by 13 publications

(5 citation statements)

References 58 publications

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“…Furthermore, both the dry and 63 °C warm water soaking shear strengths of the SM/QCP/MoS 2 @TA adhesive were reasonably comparable with those of widely used urea-formaldehyde (UF) resins and phenolic resins (PF) in plywood production and typical soy protein based adhesives (Figure d). ,,,− It was evident that the mechanical performance of SM/QCP/MoS 2 @TA adhesive surpassed those of both petroleum-based adhesives and soy protein adhesives reinforced with other inorganic materials (e.g., nanomontmorillonite, two-dimensional boron nitride, mica flakes, vegetable fibers, nanobarium titanate, and hyperbranched polymers). Overall, the creation of a biomimetic adhesive inspired by dragonfly wings and plant cell walls is a notable achievement.…”

Section: Resultsmentioning

confidence: 67%

“…Compared to the formaldehyde-based binders widely used today, SM/QCP/MoS 2 @TA adhesive shows obvious advantages in terms of cost, mechanical behavior, and human and environmental friendliness (no formaldehyde release). Compared to the representative soy proteins reported recently (Figure S2f and Table S2), the adhesive demonstrated good comprehensive properties, including superior dry/wet adhesive strength, toughness, mold resistance, and flame-retardant properties. ,,− This biomass adhesive inspired by the microstructure of dragonfly wings and cell walls of higher plants addressed the longstanding challenge of the difficult balance between strength and toughness in polymeric materials and provided a very promising strategy to produce multifunctional biobased materials.…”

Section: Resultsmentioning

confidence: 90%

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Desirable Strong and Tough Adhesive Inspired by Dragonfly Wings and Plant Cell Walls

Zeng,

Dong,

Luo

et al. 2024

ACS Nano

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The production of wood-based panels has a significant demand for mechanically strong and flexible biomass adhesives, serving as alternatives to nonrenewable and toxic formaldehyde-based adhesives. Nonetheless, plywood usually exhibits brittle fracture due to the inherent trade-off between rigidity and toughness, and it is susceptible to damage and deformation defects in production applications. Herein, inspired by the microstructure of dragonfly wings and the cross-linking structure of plant cell walls, a soybean meal (SM) adhesive with great strength and toughness was developed. The strategy was combined with a multiple assembly system based on the tannic acid (TA) stripping/modification of molybdenum disulfide (MoS 2 @TA) hybrids, phenylboronic acid/quaternary ammonium doubly functionalized chitosan (QCP), and SM. Motivated by the microstructure of dragonfly wings, MoS 2 @TA was tightly bonded with the SM framework through Schiff base and strong hydrogen bonding to dissipate stress energy through crack deflection, bridging, and immobilization. QCP imitated borate chemistry in plant cell walls to optimize interfacial interactions within the adhesive by borate ester bonds, boron−nitrogen coordination bonds, and electrostatic interactions and dissipate energy through sacrificial bonding. The shear strength and fracture toughness of the SM/QCP/ MoS 2 @TA adhesive were 1.58 MPa and 0.87 J, respectively, which were 409.7% and 866.7% higher than those of the pure SM adhesive. In addition, MoS 2 @TA and QCP gave the adhesive good mildew resistance, durability, weatherability, and fire resistance. This bioinspired design strategy offers a viable and sustainable approach for creating multifunctional strong and tough biobased materials.

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Section: Resultsmentioning

confidence: 67%

Section: Resultsmentioning

confidence: 90%

Desirable Strong and Tough Adhesive Inspired by Dragonfly Wings and Plant Cell Walls

Zeng,

Dong,

Luo

et al. 2024

ACS Nano

Self Cite

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“…These phenomena were helpful for a better understanding of the influence of WLEPs on the bonding performance of the adhesives. Notably, compared with the bonding strength of other reported soy-based adhesives, the SPI/WLEP/PA adhesives demonstrated excellent dry shear strength and boiling water strength, exceeded the national standard requirement for exterior-grade plywood type I (≥0.70 MPa), which has been rarely reported (Figure a). ,− …”

Section: Resultsmentioning

confidence: 81%

Waterborne Lignin-Based Epoxy Resin: A Green and Effective Chemical Cross-Linker to Form Soy Protein-Based Wood Adhesive with High Performance

Huo,

Yang,

Jin

et al. 2024

ACS Appl. Polym. Mater.

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Waterborne lignin-based epoxy resin emulsions (WLEPs) bearing poly(ethylene glycols) (PEGs) as hydrophilic and soft segments were successfully prepared without using any solvent, and then the WLEPs were cured with polyamide (PA) and the soybean protein isolate (SPI) to form wood adhesives SPI/WLEP/PA with good bonding performance and water resistance. The WLEPs were uniformly dispersed in the SPI matrix, and the multiple interactions between WLEP, PA, and SPI resulted in a more stable and compact cross-linked network, which was conducive to enhancing the cohesion strength, water tolerance, and thermal stabilities of the SPI-based adhesives. In comparison to the pristine SPI adhesive, the dry and hot water (63 °C for 3 h) shear strengths of the plywood formulated with SPI/WLEP/PA (WLEP: 16 wt %) remarkably increased by 137% (3.94 MPa) and 134% (0.75 MPa), respectively, satisfying the demand of interior-use plywood type II. Especially, when the WLEP loading reached 21 wt %, the plywood demonstrated outstanding boiling water strength of 0.77 MPa, higher than the China national standard requirement for exterior-grade plywood type I (≥0.70 MPa). These results suggested that the WLEPs could serve as a green and effective cross-linker to give SPI-based wood adhesives with high water tolerance and bonding performance.

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“…Long-term formaldehyde emission during the use of wood-based products fabricated with formaldehyde-based resins has been a threat to human health and the environment as the wood-based products were commonly used for furniture manufacturing, house decoration, and construction . Replacing formaldehyde with eco-friendly aldehydes, such as glyoxal (G), , propionaldehyde, and glutaraldehyde, to prepare safe wood adhesives has been a pursued aim during past decades.…”

Section: Introuctionmentioning

confidence: 99%

“…Long-term formaldehyde emission during the use of woodbased products fabricated with formaldehyde-based resins has been a threat to human health and the environment as the wood-based products were commonly used for furniture manufacturing, house decoration, and construction. 1 Replacing formaldehyde with eco-friendly aldehydes, such as glyoxal (G), 2,3 propionaldehyde, 4 and glutaraldehyde, 5 to prepare safe wood adhesives has been a pursued aim during past decades. Given the attractive features of higher functionality than formaldehyde, but lower volatility and toxicity, acceptable price, as well as biomass availability, glyoxal was once regarded as the most preferential substitute compared to other aldehydes.…”

Section: ■ Introuctionmentioning

confidence: 99%

Long-Chain Polyamine-Glyoxal Wood Adhesive: Formaldehyde-Free, Green Synthesis, and Ultra-Performances

Jiang,

Duan,

Liu

et al. 2023

ACS Sustainable Chem. Eng.

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Formaldehyde emission from wood-based products has been a threat to human health and the environment due to the use of formaldehyde-based adhesives. Glyoxal (G) was once regarded as a promising substitute for formaldehyde due to its formaldehyde-like reactivity and low toxicity. However, many studies have indicated that the urea-glyoxal (UG) and melamine-glyoxal (MG) reactions did not lead to the desired adhesion property due to cyclization reactions. To prevent cyclization, in this study, a long-chain melamine-1,6-hexanediamine (MH) polymer was used with glyoxal to fabricate wood adhesive via a facile and clean strategy. In contrast to previously reported glyoxal-related wood adhesives, the MHG adhesive exhibited a lower cure temperature, much higher bonding strength, and far superior water resistance. Particularly, when a low hot-press temperature of 80 °C was applied, a dry bonding strength above 2.42 MPa (100% wood failure) and a wet bonding strength (boiling in water for 3 h) of 1.62 MPa were achieved for plywood. With a higher cure temperature of 120 °C applied, a bonding strength above 1.50 MPa was retained with 100% wood failure even after boiling for 72 h. Structural characterizations suggested that the outstanding performances of the MHG adhesive can be attributed to easy formation of highly stable conjugated imine bonds (−N�C−C�N−).

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Tough, waterproof, and mildew-resistant fully biobased soybean protein adhesives enhanced by furfuryl alcohol with dynamic covalent linkages

Cited by 13 publications

References 58 publications

Desirable Strong and Tough Adhesive Inspired by Dragonfly Wings and Plant Cell Walls

Desirable Strong and Tough Adhesive Inspired by Dragonfly Wings and Plant Cell Walls

Waterborne Lignin-Based Epoxy Resin: A Green and Effective Chemical Cross-Linker to Form Soy Protein-Based Wood Adhesive with High Performance

Long-Chain Polyamine-Glyoxal Wood Adhesive: Formaldehyde-Free, Green Synthesis, and Ultra-Performances

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