Making Protein-Based Adhesives Water Resistant: Role of Protein Water Solubility, Galloyl Modification, and Complexation

Moghaddam, Saeed Zajforoushan; Qie, Runtian; Thormann, Esben

doi:10.1021/acsapm.1c01089

Cited by 8 publications

(7 citation statements)

References 29 publications

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“…15,16 Several mechanisms are suggested to play a substantial role in mussel adhesion, 14 three of which have been taken as inspiration in our recent studies. 11,17 The first mechanism revolves around the signature amino acid found in the mussel adhesive, i.e., l-3,4-dihydroxyphenylalanine (l-DOPA). The catechol moiety of l-DOPA can form various covalent/ noncovalent interactions, 18 enabling robust interfacial adhesion to substrates of different chemistries 19 as well as cross-linking and curing of the adhesive proteins.…”

Section: Introductionmentioning

confidence: 99%

A Biomimetic Water-Resistant Adhesive Based on ε-Polylysine/Tannic Acid Complexation

Kang,

Zajforoushan Moghaddam,

Larsen

et al. 2023

ACS Appl. Polym. Mater.

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This study investigates the potential of combining ε-polylysine and tannic acid to develop bio-based adhesives with enhanced water resistance. The two biomolecules exhibited complexation/precipitation in aqueous solutions in the pH range of 5–9. Water-based adhesives were prepared using complexes formed at pH 5, 7, and 9, followed by evaluation of their adhesion properties in both dry and wet lap shear tests. The complexes prepared at higher pH values showed a larger adhesion strength and improved water resistance. To further enhance the adhesive properties, an epoxide-based reagent was utilized to double-cross-link the complexes, resulting in a lap shear strength of ∼2 MPa after being submerged in water for 7 days.

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Section: Introductionmentioning

confidence: 99%

A Biomimetic Water-Resistant Adhesive Based on ε-Polylysine/Tannic Acid Complexation

Kang,

Zajforoushan Moghaddam,

Larsen

et al. 2023

ACS Appl. Polym. Mater.

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“…Nontoxicity, sustainably sourced materials, and minimal environmental impact are increasingly in demand . Consequently, several groups have turned to developing new and remaking old adhesive systems using bioinspired or biobased chemistry. , Protein- and biopolymer-based adhesives are being reported more frequently and some materials even exhibit wet bonding, to one degree or another . Most of these studies are working toward making a biomedical impact. , Thus, the resulting glues tend to have properties akin to soft tissue .…”

Section: Introductionmentioning

confidence: 99%

“…25,26 Protein-and biopolymer-based adhesives are being reported more frequently and some materials even exhibit wet bonding, to one degree or another. 27 Most of these studies are working toward making a biomedical impact. 28,29 Thus, the resulting glues tend to have properties akin to soft tissue.…”

Section: Introductionmentioning

confidence: 99%

Underwater Bonding with a Biobased Adhesive from Tannic Acid and Zein Protein

Schmidt,

Christ,

Kertes

et al. 2023

ACS Appl. Mater. Interfaces

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Herein are presented several adhesive formulations made from zein protein and tannic acid that can bind to a wide range of surfaces underwater. Higher performance comes from more tannic acid than zein, whereas dry bonding required the opposite case of more zein than tannic acid. Each adhesive works best in the environment that it was designed and optimized for. We show underwater adhesion experiments done on different substrates and in different waters (sea water, saline solution, tap water, deionized water). Surprisingly, the water type does not influence the performance to a great deal but the substrate type does. An additional unexpected result was bond strength increasing over time when exposed to water, contradicting general experiments of working with glues. Initial adhesion underwater was stronger compared to benchtop adhesion, suggesting that water helps to make the glue stick. Temperature effects were determined, indicating maximum bonding at about 30 °C and then another increase at higher temperatures. Once the adhesive was placed underwater, a protective skin formed on the surface, keeping water from entering the rest of the material immediately. The shape of the adhesive could be manipulated easily and, once in place, the skin could be broken to induce faster bond formation. Data indicated that underwater adhesion was predominantly induced by tannic acid, cross-linking within the bulk for adhesion and to the substrate surfaces. The zein protein provided a less polar matrix that helped to keep the tannic acid molecules in place. These studies provide new plant-based adhesives for working underwater and for creating a more sustainable environment.

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“…Trialdehyde adhesive (urea formaldehyde resin, melamine formaldehyde resin, and phenolic resin) was widely used in the traditional wood industry [ 1 ]. However, trialdehyde adhesive had some problems, such as relying on oil resources, releasing formaldehyde, and polluting the environment [ 2 ]. Especially with the rise of global oil prices and the enhancement of people’s awareness of environmental protection and safety, the development of renewable biomass aldehyde-free adhesives (starch adhesives [ 3 ], tannin adhesives [ 4 ], lignin adhesives [ 5 ], plant protein adhesives [ 6 ]) have become an inevitable trend in the development of adhesive industry.…”

Section: Introductionmentioning

confidence: 99%

Preparation and Characterization of Plant Protein Adhesives with Strong Bonding Strength and Water Resistance

Guo

Huang

et al. 2022

Foods

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Plant protein adhesive has received considerable attention because of their renewable raw material and no harmful substances such as formaldehyde. However, for the plant protein adhesive used in the field of plywood, low cost, strong water resistance, and high bonding strength were the necessary conditions for practical application. In this work, a double-network structure including hydrogen bonds and covalent bonds was built in hot-pressed peanut meal (HPM) protein (HPMP) adhesive, soybean meal (SBM) protein (SBMP) adhesive and cottonseed meal (CSM) protein (CSMP) adhesives. The ether bonds and ester bonds were the most in CSMP adhesive, followed by SBMP adhesive, while the hydrogen bond was the most in HPMP adhesive. The solubility of the HPMP, SBMP, and CSMP adhesives decreased by 14.3%, 24.2%, and 19.4%, the swelling rate decreased by 56.9%, 48.4%, and 78.5%, respectively. The boiling water strength (BWS) of HPMP (0.82 MPa), SBMP (0.92 MPa), and CSMP adhesives reached the bonding strength requirement of China National Standards class I plywood (type I, 0.7 MPa). The wet shear strength (WSS) of HPMP, SBMP, and CSMP adhesives increased by 334.5% (1.26 MPa), 246.3% (1.42 MPa), and 174.1% (1.59 MPa), respectively. This study provided a new theory and method for the development of eco-friendly plant meal protein adhesive and promotes the development of green adhesive.

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Making Protein-Based Adhesives Water Resistant: Role of Protein Water Solubility, Galloyl Modification, and Complexation

Cited by 8 publications

References 29 publications

A Biomimetic Water-Resistant Adhesive Based on ε-Polylysine/Tannic Acid Complexation

A Biomimetic Water-Resistant Adhesive Based on ε-Polylysine/Tannic Acid Complexation

Underwater Bonding with a Biobased Adhesive from Tannic Acid and Zein Protein

Preparation and Characterization of Plant Protein Adhesives with Strong Bonding Strength and Water Resistance

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