Effect of modified bamboo lignin replacing part of C5 petroleum resin on properties of polyurethane/polysiloxane pressure-sensitive adhesive and its application on the wood substrate

Xu, Chaochao; Qu, Zhencai; Lu, Mangeng; Meng, Hao; Chen, Bing; Jiao, Enxiang; Zhang, Ending; Wu, Kun; Shi, Jun

doi:10.1016/j.jcis.2021.06.033

Cited by 20 publications

(6 citation statements)

References 24 publications

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“…However, the adhesives used in large quantities end up as garbage, causing serious environmental problems and waste of resources ( 6 ). In particular, because of the stable cross-linked structure and strong interfacial interaction, conventional commercial adhesives, such as epoxy and polyurethane resins ( 7 , 8 ), are difficult to remove from the surface of the bonded substrate after the end of their service life. Consequently, the disposal of massive waste adhesives and their binding substances will be a headache for the future ( 9 ).…”

Section: Introductionmentioning

confidence: 99%

Fully recyclable multifunctional adhesive with high durability, transparency, flame retardancy, and harsh-environment resistance

et al. 2022

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Recyclable/reversible adhesives have attracted growing attention for sustainability and intelligence but suffer from low adhesion strength and poor durability in complex conditions. Here, we demonstrate an aromatic siloxane adhesive that exploits stimuli-responsive reversible assembly driven by π-π stacking, allowing for elimination and activation of interfacial interactions via infiltration-volatilization of ethanol. The robust cohesive energy from water-insensitive siloxane assembly enables durable strong adhesion (3.5 MPa shear strength on glasses) on diverse surfaces. Long-term adhesion performances are realized in underwater, salt, and acid/alkali solutions (pH 1-14) and at low/high temperatures (−10-90°C). With reversible assembly/disassembly, the adhesive is closed-loop recycled (~100%) and reused over 100 times without adhesion loss. Furthermore, the adhesive has unique combinations of high transparency (~98% in the visible light region of 400-800 nm) and flame retardancy. The experiments and theoretical calculations reveal the corresponding mechanism at the molecular level. This π-π stacking–driven siloxane assembly strategy opens up an avenue for high-performance adhesives with circular life and multifunctional integration.

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Section: Introductionmentioning

confidence: 99%

Fully recyclable multifunctional adhesive with high durability, transparency, flame retardancy, and harsh-environment resistance

et al. 2022

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“…DSC thermograms of the PSA formulations and the monomers are illustrated in Figures and S4. All of the prepared PSAs are found to exhibit a single T g value between 15 and 23 °C . This assures the complete miscibility of PUA, AELO, and LA in the range of 10–20 nm .…”

Section: Resultsmentioning

confidence: 73%

“…All of the prepared PSAs are found to exhibit a single T g value between 15 and 23 °C. 46 This assures the complete miscibility of PUA, AELO, and LA in the range of 10−20 nm. 25 From the figure, it can be understood that the addition of LA lowers the T g of the system.…”

Section: Resultsmentioning

confidence: 94%

UV-Curable Bio-Based Pressure-Sensitive Adhesives: Tuning the Properties by Incorporating Liquid-Phase Alkali Lignin-Acrylates

2022

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Renewable pressure-sensitive adhesive (PSA) is an emerging field in adhesive industries as it is an excellent green alternative to depleting petroleum-sourced adhesives. Herein, we report the development of novel bio-sourced UV-curable PSAs with ∼50% biomass content originating from alkali lignin, cardanol, and linseed oil. Bio-based prepolymers cardanoldiol acrylate (CDA) and acrylated epoxidized linseed oil (AELO) were synthesized and used to prepare polyurethane acrylate (PUA)-based PSA systems. Alkali-lignin-based acrylates (LAs) in the liquid phase were incorporated into the PUA/AELO PSA system at 10–30 wt % loading to tune the functional properties. The Fourier transform infrared spectroscopy (FTIR) analysis showed weakened cross-linking in the PSA systems on LA addition, which is desirable for removable PSA applications. The single glass-transition temperature (T g) noticed in all of the PSA formulations revealed good miscibility among the oligomers/prepolymers. The viscoelastic window also confirmed that the incorporation of 10–20% LA could improve the viscoelastic properties effectively to be used as removable PSAs. The addition of 20% LA into the PUA-based PSA system showed reasonable tackiness, lap shear adhesion (166 kPa), and 180° peel strength (∼2.1 N/25 mm) for possible nonstructural or semistructural applications. Lignin improved the thermal stability by hindering the degradation rate even at higher temperatures. Therefore, lignin-based PSAs with a high bio-based content paved the way of replacing petro-sourced PSA by proper tuning of the lignin content and modifications.

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“…6d), oriented strandboard, waferboard, hardboard and particleboard. [179][180][181] Although PR adhesives are widely available currently, their high cost and the non-renewable characteristic may have an impact on the future cost and availability of these petroleum-based adhesives. The develop-ment of adhesive technology based on lignin (Fig.…”

Section: Lpr Adhesivesmentioning

confidence: 99%

Lignin as a green and multifunctional alternative to phenol for resin synthesis

Sun

Wang

et al. 2023

Green Chem.

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Effect of modified bamboo lignin replacing part of C5 petroleum resin on properties of polyurethane/polysiloxane pressure-sensitive adhesive and its application on the wood substrate

Cited by 20 publications

References 24 publications

Fully recyclable multifunctional adhesive with high durability, transparency, flame retardancy, and harsh-environment resistance

Fully recyclable multifunctional adhesive with high durability, transparency, flame retardancy, and harsh-environment resistance

UV-Curable Bio-Based Pressure-Sensitive Adhesives: Tuning the Properties by Incorporating Liquid-Phase Alkali Lignin-Acrylates

Lignin as a green and multifunctional alternative to phenol for resin synthesis

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