Double crosslinked networks waterborne polyurethane with self-healing, recyclable and antibacterial functions based on dynamic bonds and used for temperature/light sensor

Chemical Engineering Journal, Journal Year: 2024, Volume and Issue: 482, P. 148994 - 148994

Published: Jan. 22, 2024

Language: Английский

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Ultra‐Strong and Tough Bio‐Based Polyester Elastomer with Excellent Photothermal Shape Memory Effect and Degradation Performance

Advanced Functional Materials, Journal Year: 2024, Volume and Issue: unknown

Published: April 8, 2024

Abstract The exploitation of bio‐based materials derived from renewable resources represents a pivotal strategic approach in addressing environmental pollution and alleviating the scarcity fossil resources. 2,5‐Furandicarboxylic acid (FDCA) is most potential substitute for terephthalic acid. Lignin abundant aromatic biomass resource. However, preparation high‐performance lignin/FDCA‐based bio‐polyesters remains formidable challenge. Herein, multifunctional lignin‐modified polyester elastomer (LFPEe) designed using FDCA‐based oligomer (PPeF) lignin (AOH) as building blocks. LFPEe exhibits superior mechanical properties with optimum tensile strength, fracture strain, elastic recovery ratio up to 58.9 MPa, 610% 88.9%, respectively, attributing formation dual cross‐linking network nanophase separation structure. Furthermore, leveraging inherent characteristics lignin, demonstrates excellent light‐controlled shape memory UV shielding performance. This innovative work not only breaks performance dependence on high molecular weight but also highlights novel paradigm value‐added utilization sustainable bio‐polyesters.

Language: Английский

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Imparting Ultrahigh Strength to Polymers via a New Concept Strategy of Construction of up to Duodecuple Hydrogen Bonding among Macromolecular Chains

Advanced Materials, Journal Year: 2024, Volume and Issue: 36(35)

Published: June 21, 2024

Abstract Interconnecting macromolecules via multiple hydrogen bonds (H‐bonds) can simultaneously strengthen and toughen polymers, but material synthesis becomes extremely difficult with increasing number of H‐bonding donors acceptors; therefore, most reports are limited to triple quadruple H‐bonds. Herein, this bottleneck is overcome by adopting a quartet‐wise approach constructing H‐bonds instead the traditional pairwise method. Thus, large be easily established, supramolecular interactions further reinforced. Especially, when such H‐bond motifs embedded in four macromolecular chains—rather than two as usual—are tied, distributing applied stress over larger volume more significantly improving overall mechanical properties. Proof‐of‐concept studies indicate that proposed intermolecular (up duodecuple) readily introduced polyurethane. A record‐high tensile strength (105.2 MPa) achieved alongside outstanding toughness (352.1 MJ m −3 ), fracture energy (480.7 kJ −2 fatigue threshold (2978.4 J ). Meantime, polyurethane has acquired excellent self‐healability recyclability. This strategy also applicable nonpolar polydimethylsiloxane, whose (15.3 (50.3 ) among highest reported date for silicones. new technique good expandability used develop even stronger polymers.

Language: Английский

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Sustainable superhydrophobic lignin-based polyurethane foam: an innovative solution for oil pollutant adsorption

RSC Advances, Journal Year: 2025, Volume and Issue: 15(1), P. 377 - 387

Published: Jan. 1, 2025

Lignin-based polyurethane foam was synthesized via a one-pot method and subsequently functionalized with silane to achieve superhydrophobicity. The modified demonstrated excellent oil–water separation performance, showcasing its potential for practical applications in environmental remediation.

Language: Английский

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Photothermal-responsive lignin-based polyurethane with mechanically robust, fast self-healing, solid-state plasticity and shape-memory performance

International Journal of Biological Macromolecules, Journal Year: 2024, Volume and Issue: 271, P. 132499 - 132499

Published: May 20, 2024

Language: Английский

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Lignin derived polyurethanes: Current advances and future prospects in synthesis and applications

European Polymer Journal, Journal Year: 2024, Volume and Issue: 209, P. 112899 - 112899

Published: March 5, 2024

Language: Английский

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A fully healable, mechanical self-strengthening and antibacterial Poly(thiocarbamate-urethane) elastomer constructed via dual reversible dynamic networks

Chemical Engineering Journal, Journal Year: 2024, Volume and Issue: unknown, P. 149179 - 149179

Published: Jan. 1, 2024

Language: Английский

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Waterborne polyurethane synthesized for leather with excellent wear and hydrolysis resistance enabled by bio-based poly(trimethylene carbonate) and l-lysine diisocyanate

Progress in Organic Coatings, Journal Year: 2024, Volume and Issue: 193, P. 108553 - 108553

Published: June 1, 2024

Language: Английский

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Mechanically Robust, Reprocessable, and Light-Controlled Healable Solvent-Free Lignin-Containing Polyurethane Elastomers Based on Dynamic Phenol-Carbamate Network

Macromolecules, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 9, 2025

In this study, we introduce an innovative one-step, solvent-free approach for preparing lignin-containing polyurethane elastomers (LPUes) with nanomicro phase-separated structure and dynamic dual-cross-linking networks comprising both phenol-carbamate bonds (PCBs) hydrogen bonds. This distinctive structural design imparted exceptional mechanical properties to the LPUes. The sample containing 22.9 wt % phenolized lignin exhibited tensile strength of 44.6 MPa, elongation at break 714.6%, toughness 148.0 MJ/m3. abundance PCBs also conferred remarkable reprocessing capabilities, these LPUes retaining over 98% 94.4% after two hot-pressing cycles. Moreover, incorporation endowed photothermal properties, facilitating efficient light-controlled self-healing shape-memory functionalities. work offers pathway harmonize thermal adaptability in development sustainable high-performance LPUes, thereby opening their avenues diverse potential applications.

Language: Английский

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Fabrication of sodium lignosulfonate/waterborne polyurethane composites with high biological content to enhance mechanical properties and UV resistance

Industrial Crops and Products, Journal Year: 2024, Volume and Issue: 215, P. 118689 - 118689

Published: May 9, 2024

Language: Английский

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