An easy-coating, versatile, and strong soy flour adhesive via a biomineralized structure combined with a biomimetic brush-like polymer

Zhang, Jieyu; Long, Chun; Zhang, Xin; Liu, Zheng; Zhang, Xilin; Liu, Tao; Li, Jianzhang; Gao, Qiang

doi:10.1016/j.cej.2022.138387

Cited by 48 publications

(10 citation statements)

References 52 publications

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“…(1) Biomimetic strategies (mussel, 192,193 gecko toes, 194 spider silk, 195 muscle fiber, 196 etc . ), adding nanomaterials, 197,198 constructing organic–inorganic hybrid systems 199,200 and other methods will be utilized to improve the adhesive properties such as bonding strength, water resistance, and toughness.…”

Section: Discussionmentioning

confidence: 99%

Recent progress of biomass in conventional wood adhesives: a review

Tian,

Wang,

et al. 2023

Green Chem.

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Section: Discussionmentioning

confidence: 99%

Recent progress of biomass in conventional wood adhesives: a review

Tian,

Wang,

et al. 2023

Green Chem.

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“… ( a ) Wet shear strength of different adhesives; ( b ) Comparison of the wet shear strengths and cross-linking agent concentrations between SPI/PAE/0.4%FGO and the other adhesives [ 15 , 20 , 46 , 47 , 48 , 49 , 50 , 51 , 52 , 53 , 54 ]; ( c ) Macro-surface morphology of the damaged plywood surface: 1-1,1-2: SPI adhesives, 2-1,2-2: SPI/PAE adhesives, 3-1,3-2: SPI/PAE/0.2% FGO adhesives, 4-1,4-2: SPI/PAE/0.4% FGO adhesives, 5-1,5-2: SPI/PAE/0.6% FGO adhesives. …”

Section: Figures Schemes and Tablesmentioning

confidence: 99%

Improving Bond Performance and Reducing Cross-Linker Dosage of Soy Protein Adhesive via Hyper-Branched and Organic–Inorganic Hybrid Structures

Zheng

Sun

et al. 2023

Nanomaterials

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Eco-friendly soybean protein adhesives could be an ideal substitute for replacing traditional formaldehyde-based adhesives in wood industry. However, a large number of cross-linking agents are required in soy protein adhesive formulations to obtain sufficiently performing properties. Inspired by the high performance of nacre and branched structures, a hyper-branched amine (HBPA) was synthesized and grafted to graphene oxide (GO), generating a hyper-branched amine-functionalized GO (FGO). A novel soy protein-based adhesive was developed by mixing FGO with soy protein (SPI) and a low dose polyamidoamine-epichlorohydrin (PAE). Results showed that the addition of only 0.4 wt% FGO and 0.75 wt% PAE to the SPI adhesive formulation enhanced the wet shear strength of plywood to 1.18 MPa, which was 181% higher than that of the adhesive without enhancement. The enhanced performance is attributed to the denser cross-linking structure and improved toughness of the adhesive layer. Using FGO in the adhesive formulation also greatly reduced the concentration of the additive cross-linker by up to 78.6% when compared with values reported in the literature. Thus, using a hyper-branched functionalized nano-material to form an organic–inorganic hybrid structure is an effective and efficient strategy to reinforce the composites and polymers. It significantly reduces the chemical additive levels, and is a practical way to develop a sustainable product.

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“…To overcome these limitations, various chemical and physical methods have been utilized to enhance the properties of soybean protein adhesives. These include protein molecular denaturation, biomimetic modification, − organic and inorganic hybrid modification, − nanomaterial modification, , and cross-linking modification. − In addition, considerable progress has been made in improving the water resistance, toughness, flame retardancy, and mold resistance of soybean protein adhesive.…”

Section: Introductionmentioning

confidence: 99%

Preparation of Strong and Thermally Conductive, Spider Silk-Inspired, Soybean Protein-Based Adhesive for Thermally Conductive Wood-Based Composites

Zhang,

Long,

Zhu

et al. 2023

ACS Nano

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The development of formaldehyde-free functional wood composite materials through the preparation of strong and multifunctional soybean protein adhesives to replace formaldehyde-based resins is an important research area. However, ensuring the bonding performance of soybean protein adhesive while simultaneously developing thermally conductive adhesive and its corresponding wood composites is challenging. Taking inspiration from the microphase separation structure of spider silk, boron nitride (BN) and soy protein isolate (SPI) were mixed by ball milling to obtain a BN@SPI matrix and combined with the self-synthesized hyperbranched reactive substrates as amorphous region reinforcer and cross-linker triglycidylamine to prepare strong and thermally conductive soybean protein adhesive with cross-linked microphase separation structure. These findings indicate that mechanical ball milling can be employed to strip BN followed by combination with SPI, resulting in a tight bonded interface connection. Subsequently, the adhesive’s dry and wet shear strengths increased by 14.3% and 90.5% to 1.83 and 1.05 MPa, respectively. The resultant adhesive also possesses a good thermal conductivity (0.363 W/mK). Impressively, because hot-pressing helps the resultant adhesive to establish a thermal conduction pathway, the thermal conductivity of the resulting wood-based composite is 10 times higher than that of the SPI adhesive, which shows a thermal conductivity similar to that of ceramic tile and has excellent potential for developing biothermal conductivity materials, geothermal floors, and energy storage materials. Moreover, the adhesive possessed effective flame retardancy (limit oxygen index = 36.5%) and mildew resistance (>50 days). This bionic design represents an efficient technique for developing multifunctional biomass adhesives and composites.

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An easy-coating, versatile, and strong soy flour adhesive via a biomineralized structure combined with a biomimetic brush-like polymer

Cited by 48 publications

References 52 publications

Recent progress of biomass in conventional wood adhesives: a review

Recent progress of biomass in conventional wood adhesives: a review

Improving Bond Performance and Reducing Cross-Linker Dosage of Soy Protein Adhesive via Hyper-Branched and Organic–Inorganic Hybrid Structures

Preparation of Strong and Thermally Conductive, Spider Silk-Inspired, Soybean Protein-Based Adhesive for Thermally Conductive Wood-Based Composites

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