Tannin as a renewable raw material for adhesive applications: a review

Dhawale, Pritam V.; Vineeth, S. K.; Gadhave, Ravindra V.; J, Jabeen Fatima M.; Supekar, Mrudul Vijay; Thakur, Vijay Kumar; Raghavan, Praveen

doi:10.1039/d1ma00841b

Cited by 47 publications

(18 citation statements)

References 209 publications

(376 reference statements)

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“…Previous studies introduced boric acid into PVA to improve the moisture resistance of the blend film [20,21]. Boric acid can form strong hydrogen bonds with PVA molecules, reducing the hydroxyl groups' hydrophilicity [21,22]. However, it does not provide UV protection and antibacterial activities in the polymer film.…”

Section: Introductionmentioning

confidence: 99%

The Enhanced Moisture Absorption and Tensile Strength of PVA/Uncaria gambir Extract by Boric Acid as a Highly Moisture-Resistant, Anti-UV, and Strong Film for Food Packaging Applications

et al. 2022

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There is an increasing demand for food packaging materials that are safe for the environment and human health. Pure polyvinyl alcohol (PVA) film is non-toxic and transparent but has poor UV-light shielding, thermal and moisture resistance, and antibacterial activity. Our previous work prepared and characterized a biofilm derived from PVA and edible Uncaria gambir extract (UG). The film has antibacterial properties and is anti-UV and flexible. However, UG is hydrophilic, making this film have low moisture absorption. To improve these properties, we trialed adding boric acid (BA) and UG into the PVA. This present study aims to characterize pure PVA film and blend films resulting from mixing PVA (10%), BA (0.5%), and UG (1%). It was found that the PVA/UG/BA film presented the best performance in terms of UV light absorption, tensile properties, thermal and moisture resistance, and antibacterial activity. This blend sample absorbs about 98% of the UV light at 400 nm wavelength without significantly sacrificing transparency. These findings indicate that UG and BA could be advantageous in the preparation of moisture and thermal-resistant UV shielding films with low toxicity and high antibacterial properties based on PVA. They were also found to be strong enough for food packaging applications.

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Section: Introductionmentioning

confidence: 99%

The Enhanced Moisture Absorption and Tensile Strength of PVA/Uncaria gambir Extract by Boric Acid as a Highly Moisture-Resistant, Anti-UV, and Strong Film for Food Packaging Applications

et al. 2022

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“…8,9 In addition, these adhesives are made from petroleum derivatives, which are nonrenewable and unfavorable for the environment and energy sustainability. 8,10,11 To avoid further environmental damage, future adhesives need be nontoxic, formaldehyde-free, environmentally friendly, biodegradable, high strength, and made from biomass. 12−14 Adhesives utilizing biomass precursors are promising alternatives to reduce formaldehyde release and petroleum consumption.…”

Section: Introductionmentioning

confidence: 99%

Bioinspired Natural Magnolol-Based Adhesive with Strong Adhesion and Antibacterial Properties for Application in Wet and Dry Environments

Wang

et al. 2023

ACS Appl. Mater. Interfaces

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The development of environmentally friendly, green, and nontoxic adhesives with excellent dry and wet adhesion properties is of great attraction. In nature, barnacles and mussels exhibit strong adhesion by secreting a hydroxyl-rich dopa. Inspired by their adhesion mechanism, a simple biobased MAG-PETMP (MP) adhesive was prepared from magnolol (MAG) and pentaerythritol tetra (3-mercaptopropionate) (PETMP) by a thiol–ene click chemistry reaction. MP as an adhesive exhibits high bond strength with other substrates due to hydrogen bonds formed by the abundant hydroxyl groups at the interface and shows an inherent thermosetting network structure. Since MP has a thermosetting network, it exhibits excellent thermal stability, solvent resistance, and high mechanical strength, which make the adhesive stable in a humid environment. The cross-linking degree of MP can be easily controlled by adjusting the molar ratio of MAG and PETMP. Among the synthesized samples, the elongation at break of the MP 1 formulation is 174.27%, which makes it promising for use as a flexible adhesive. Moreover, the inherent antibacterial properties of MAG enable MP to exhibit antimicrobial properties and antibacterial adhesion to some extent. This work provides a simple biomimetic strategy that could enable the application of MAG for adhesives.

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“…Tannins, a well-known phenolic rich biomolecule derived from the higher plants, have been used for many applications, such as adhesives, composites, pharmaceuticals, medicals, food and beverage products [1][2][3][4]. Due to their low reactivity to the wood, tannins, particularly the condensed tannins, have been used for wood modification with the addition of cross-linkers or other reactive chemicals or additives, such as furfuryl alcohol, hexamine, formaldehyde, maleic anhydride, glyoxal, furfural, caprolactam, or lactic acid [5][6][7][8][9][10].…”

Section: Introductionmentioning

confidence: 99%

Modification of Wood by Tannin-Furfuryl Alcohol Resins–Effect on Dimensional Stability, Mechanical Properties and Decay Durability

Mubarok¹,

G閞ardin-Charbonnier²,

Azadeh³

et al. 2023

Journal of Renewable Materials

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Furfurylation is a well-known wood modification technology. This paper studied the effect of tannin addition on the wood furfurylation. Three kinds of dicarboxylic acids, adipic acid, succinic acid, and tartaric acid, as well as glyoxal as a comparing agent, were used to catalyse the polymerisation of furanic or tannin-furanic solutions during wood modification. Impregnation of furanic or tannin-furanic solution at a certain concentration into the wood followed with curing at 103°C for a specific duration was performed for the wood modification. Different properties of the modified woods like dimensional stability, resistance of treatment to leaching, mechanical properties, decay durability against white-rot (Coriolus versicolor, Pycnoporus sanguineus) and brown-rot (Coniophora puteana) as well as their chemical and anatomical characteristics were evaluated. Results revealed that the partial substitution of FA by the tannins improved the fixation of the chemicals impregnated in wood. Further, dimensional stability, leaching resistance, Brinell hardness, modulus of elasticity/modulus of rupture, and decay durability properties of the furfurylated wood were also improved in the presence of tannins. Scanning electron microscopy revealed the deposition of the polymer in the wood lumen cells and in the wood cell walls.

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Tannin as a renewable raw material for adhesive applications: a review

Abstract: Greener methods for the extraction and isolation of tannin, and it's state of art in adhesive technology.

Cited by 47 publications

References 209 publications

The Enhanced Moisture Absorption and Tensile Strength of PVA/Uncaria gambir Extract by Boric Acid as a Highly Moisture-Resistant, Anti-UV, and Strong Film for Food Packaging Applications

The Enhanced Moisture Absorption and Tensile Strength of PVA/Uncaria gambir Extract by Boric Acid as a Highly Moisture-Resistant, Anti-UV, and Strong Film for Food Packaging Applications

Bioinspired Natural Magnolol-Based Adhesive with Strong Adhesion and Antibacterial Properties for Application in Wet and Dry Environments

Modification of Wood by Tannin-Furfuryl Alcohol Resins–Effect on Dimensional Stability, Mechanical Properties and Decay Durability

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