Ultra-Tough Vanillin-Based Polyester Hot-Melt Adhesive through Multiple Oxygenated Groups

Dong, Wentao; Peng, Hongchao; Zhang, Rongya; He, Changyuan; Gu, Yingchun; Yang, Qin; Chen, Sheng; Lan, Jianwu; Yan, Bin

doi:10.1021/acsapm.3c01878

Cited by 4 publications

(1 citation statement)

References 56 publications

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“…A polarizing optical microscope (POM) was used to observe the actual crystalline morphology on the surface of R-PBAT and PBAT copolyesters . Prior to observation, the sample was placed on a slide and heated on a hot plate to 150 °C until it melted.…”

Section: Results and Discussionmentioning

confidence: 99%

Hydrophilic and Biodegradable PBAT Copolyesters Prepared from Chemically Recycled Resources

Liu,

Jiang,

Zhou

et al. 2024

ACS Appl. Polym. Mater.

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Poly(butylene adipate-co-terephthalate) (PBAT) is the most extensively researched and developed biodegradable material. Its application in the production of garments, packaging, and films is limited due to the lack of polar groups on its surface. To address the issue of insufficient hydrophilicity of PBAT, this paper presents modified PBAT that incorporates a hydrophilic chain segment (polyethylene glycol, PEG) during the polycondensation process. Regenerated bis(hydroxybutyl)terephthalate (BHBT), a precursor material for the synthesis of biodegradable PBAT, was produced through the chemical alcoholysis of poly(butylene terephthalate) (PBT). Hydrophilic PBAT was then prepared by condensation polymerization with recycled BHBT, BHAT (dihydroxybutyl adipate), and PEG. It has been demonstrated that the successful doping of hydrophilic PEG into the main chain of PBAT improves its hydrophilicity. This leads to a decrease in elongation at the break and tensile strength. Additionally, the contact angle decreases to 46.71°, while the surface free energy (γ s ) increases to 42.99 mJ/m 2 . Hydrophilic PBAT copolyesters exhibit an increase in gas permeability, with the highest permeability coefficient of water vapor (OSF WV = 1.358). In the visible light range of 400−800 nm, PBAT copolyesters exhibit higher transmittance than PBAT materials, resulting in greater transparency. Additionally, R-PBAT has a higher loss modulus and energy storage modulus than the PBAT copolyester in the range of 0.1−100 rad/s. The inclusion of PEG chain segments enhances the melt fluidity of the PBAT copolyester, facilitating processing. While over the course of 30 days, the addition of PEG had an effect on the degradation rate of PBAT, which remained at 34.44%.

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Section: Results and Discussionmentioning

confidence: 99%

Hydrophilic and Biodegradable PBAT Copolyesters Prepared from Chemically Recycled Resources

Liu,

Jiang,

Zhou

et al. 2024

ACS Appl. Polym. Mater.

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Six-membered ring-reinforced flexible high-elongation block polyamide as strong and multi-reusable hot melt adhesive

Sun,

Yang,

Xiang

et al. 2024

Construction and Building Materials

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Thioctic Acid-Based Solvent-Free and Recoverable Adhesive for Dry/Wet Environments

Zhang,

Wang,

Yao

et al. 2024

ACS Appl. Mater. Interfaces

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Metal adhesive synthesis typically involves heating and solvents, and the resultant adhesives lack degradability and suffer from recycling and sustainable problems. Herein, we developed a solvent-free and chemically degradable biobased adhesive (p(Elp-TA)+PVP) from thioctic acid (TA), its derivative (Elp), and polyvinylpyrrolidone (PVP). Through a rapid acidtriggered cationic ring-opening polymerization of dithiolane at ambient conditions, p(Elp-TA)+PVP adhesive could build up a strong lap shear strength of 1123 kPa in air and an underwater lap shear strength of 534 kPa to the copper plate. Molecular dynamics simulations show that compared to p(Elp-TA), the presence of an appropriate amount of PVP can significantly enhance the binding energy of the adhesive molecules to the metal substrate, and the rapid adhesion of p(Elp-TA)+PVP molecules to metal substrates was achieved through a synergistically dynamic adaptive network enhanced by hydrogen bonding, reversible dynamic bonding, and metal coordination bonding at 40 ps. More importantly, the applied p(Elp-TA)+PVP adhesive could be easily degraded and reverted to its smallmolecular-weight lipoic acid species. Upon exposure to dithiothreitol, a green reducing agent, the average molecular weight of the adhesive could quickly decrease from 1603 kDa to 274 Da. This green adhesive constructed by a simple method provides a promising general strategy for developing a controlled degradable and recoverable adhesive from natural resources.

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Ultra-Tough Vanillin-Based Polyester Hot-Melt Adhesive through Multiple Oxygenated Groups

Cited by 4 publications

References 56 publications

Hydrophilic and Biodegradable PBAT Copolyesters Prepared from Chemically Recycled Resources

Hydrophilic and Biodegradable PBAT Copolyesters Prepared from Chemically Recycled Resources

Six-membered ring-reinforced flexible high-elongation block polyamide as strong and multi-reusable hot melt adhesive

Thioctic Acid-Based Solvent-Free and Recoverable Adhesive for Dry/Wet Environments

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