Preparation of a moderate viscosity, high performance and adequately-stabilized soy protein-based adhesive via recombination of protein molecules

Xu, Yi; Han, Yanchun; Shi, Sheldon Q.; Gao, Qiang; Li, Jianzhang

doi:10.1016/j.jclepro.2020.120303

Cited by 84 publications

(48 citation statements)

References 37 publications

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“…The results showed that while the viscosity decreased with each addition of bromelain, the wet shear strength of PLW samples made with the produced adhesives peaked when the bromelain added was 0.1 g. This sample still presented a respectable 95% decrease in viscosity while producing a wet shear strength of 1.11 MPa, an increase of 76.2% compared with a simple protein isolate adhesive. In addition, compared with other crosslinked modified soy protein adhesives, these tests showed similar results while needing 50% less crosslinking agent [ 83 ].…”

Section: Bio-based Wood Adhesivesmentioning

confidence: 88%

Non-Formaldehyde, Bio-Based Adhesives for Use in Wood-Based Panel Manufacturing Industry—A Review

et al. 2021

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There is a strong need to develop and implement appropriate alternatives to replace formaldehyde-based adhesive systems, such as phenol–formaldehyde, in the industry of wood-based panels (WBPs). This is due to the toxicity and volatility of formaldehyde and restrictions on its use associated with some formaldehyde-based adhesives. Additionally, the current pressure to reduce the dependence on polymeric materials, including adhesives, from petrochemical-based sources has led to increased interest in bio-based adhesives, which, in some cases, already provide acceptable properties to the end-product. Among the potential raw materials for good-quality, renewable-based adhesive formulations, this paper highlights tannins, lignin, and protein sources. However, regarding renewable sources, specific features must be considered, such as their lower reactivity than certain petrochemical-based sources and, therefore, higher production costs, resource availability issues, and the need for toxicological investigations on alternative systems, to compare them to conventional systems. As a result, further research is highly encouraged to develop viable formaldehyde-free adhesive systems based on renewable sources, either at the technical or economical level. Moreover, herein, we also showcase the present market of WBPs, highlighting the obstacles that the alternative and new bio-based adhesives must overcome.

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Section: Bio-based Wood Adhesivesmentioning

confidence: 88%

Non-Formaldehyde, Bio-Based Adhesives for Use in Wood-Based Panel Manufacturing Industry—A Review

et al. 2021

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“…Moreover, the peaks at 1164 cm À1 (ester -CO) and 1741 cm À1 (C]O in COOH or COOR) appeared, and the absorption peak at 1386 cm À1 (COO-) was weakened, owing to an esterication reaction between epoxy groups in EHL-ESO and carbonyl groups/carboxyl group in SPI. 36,[46][47][48] At the same time, the peak intensity at 1525 cm À1 (N-H bending) decreased, implying that the amino groups in SPI reacted with epoxy groups. According to the above results, an interpenetrating crosslinked network structure was formed by the internal physiochemical reaction between EHL-ESO and soy protein molecules, which could increase the water resistance of soy protein-based adhesives (Scheme 1).…”

Section: Characterization Of Soy Protein-based Adhesivesmentioning

confidence: 95%

Renewable bio-based adhesive fabricated from a novel biopolymer and soy protein

Chen

Wang

et al. 2021

RSC Adv.

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“…The results are similar to previous reports that the protein molecular recombination methods can improve the resultant adhesive performance. [41,45] By adding 10% or 20% FK instead of TSPI, the dry and wet shear strength of the TSPI/FK adhesives were increased, especially for TSPI/FK-20 adhesive to 2.1 and 1.18 MPa. The results indicated that crosslinking was successfully carried out as showed in Figure 5.…”

Section: Adhesion Propertiesmentioning

confidence: 99%

Perm‐Inspired High‐Performance Soy Protein Isolate and Chicken Feather Keratin‐Based Wood Adhesive without External Crosslinker

Zhou

et al. 2021

Macro Materials & Eng

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Crosslinking modification can effectively improve the water resistance of soy protein isolate (SPI) adhesive, but it often depends on petroleum-based reagents, violating the concept of green environmental protection. Here, inspired by the breaking and recombination of the disulfide bond in the perm process, a high-performance wood adhesive is prepared by incorporation of SPI (modified by sodium sulfite to cleave the disulfide bonds of protein chains) and feather keratin (FK, extracted from waste chicken feathers by breaking the disulfide bond) without using any other crosslinkers. The crosslinking reaction occurs by disulfide bonds derived from the sulfhydryl group of FK and SPI. Thus the wet shear strength of the SPI/FK-20 adhesive is improved from 0.57 to 1.18 MPa, an increment of 107%. This study provides a green strategy to prepare high-performance protein-based adhesive from the waste products-chicken feathers, which will contribute to the development of the environmentally friendly wood adhesive industry.

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Preparation of a moderate viscosity, high performance and adequately-stabilized soy protein-based adhesive via recombination of protein molecules

Cited by 84 publications

References 37 publications

Non-Formaldehyde, Bio-Based Adhesives for Use in Wood-Based Panel Manufacturing Industry—A Review

Non-Formaldehyde, Bio-Based Adhesives for Use in Wood-Based Panel Manufacturing Industry—A Review

Renewable bio-based adhesive fabricated from a novel biopolymer and soy protein

Perm‐Inspired High‐Performance Soy Protein Isolate and Chicken Feather Keratin‐Based Wood Adhesive without External Crosslinker

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