Sustainable cross-linked poly(glycerol–co–δ–valerolactone) urethane substrates and multipurpose transparent electrodes for wearable electronics

Chemical Engineering Journal, Год журнала: 2024, Номер 495, С. 153531 - 153531

Опубликована: Июнь 27, 2024

Substrates form the backbone of most flexible electronic devices. This study reports sustainable substrates based on a new class cross-linked poly(glycerol-co-δ-valerolactone) urethanes for and stretchable A cost-effective method is described preparing these via thermal cross-linking polymerization triol with diisocyanates glass mold. The developed display high flexibility, stretchability (∼673 %), transparency (∼90 stability (∼300 °C), degradability, essential next-generation Using synthesized polymers as substrates, we develop transparent conducting electrodes (TCEs). An innovative fabrication technique involves applying thin electrospun polyvinyl alcohol (PVA) nanofiber mat wet film leveling agent to enhance adhesion even distribution sprayed silver nanowires. Through heat pressure-based nanowelding nanowire junctions, create TCEs uniform conductivity, low sheet resistance (∼40 Ω sq−1), good (∼70 %). To demonstrate versatility TCEs, fabricated devices like capacitive sensors, curvature strain heaters. TCE sensor exhibits creep consistent performance from 5–45 % strain, maintaining signal over 200 cycles at 10 kPa. pressure responds pressures 0.5–300 kPa maximum sensitivity 2.43 kPa−1 least 2600 cycles. shows increased capacitance curvatures up 600 m−1. heater reaches 85 °C in under s 5.5 V rapidly 0–35 strain. These effectively detect human motion, serving wearable sensors heaters cold conditions, demonstrating real-life applicability.

Язык: Английский

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Durable graphene-based alkyd nanocomposites for surface coating applications

Environmental Science and Pollution Research, Год журнала: 2024, Номер 31(31), С. 43476 - 43491

Опубликована: Май 3, 2024

Abstract Recently, the scientific community’s main goal is long-term sustainability. Vegetable oils are easily accessible, non-depletable, and cost-effective materials. used to prepare polymeric alkyd surfaces. Novel exciting designs of alkyd/graphene nanocomposites have provided eco-friendly thermal stability protective coating This review has briefly described important graphene-based along with their applications as coatings. These composites high hydrophobicity, corrosion resistance, durability. Graphene-based nanocoatings many industrial research interests because exceptional chemical properties. work introduces an advanced horizon for developing nanocomposite The anti-corrosion properties coatings’ longevity may be improved by combining synergistic effects hybrid nanofillers introduced in this work.

Язык: Английский

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Ecofriendly bioplastics from biowaste: Antimicrobial and functional enhancements for sustainable packaging

European Polymer Journal, Год журнала: 2024, Номер 221, С. 113557 - 113557

Опубликована: Ноя. 5, 2024

Язык: Английский

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Development of a thiol-maleimide crosslinked carboxymethyl guar gum hydrogel for sustained drug delivery

Journal of Drug Delivery Science and Technology, Год журнала: 2025, Номер unknown, С. 106633 - 106633

Опубликована: Янв. 1, 2025

Язык: Английский

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Synthesis and demulsification performance of tea polyphenol amine resin-based triblock polyether demulsifier

Journal of Polymer Research, Год журнала: 2025, Номер 32(2)

Опубликована: Фев. 1, 2025

Язык: Английский

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Synthesis of silane-functionalized polyols from natural rubber by thiol-ene click reaction and preparation of waterborne polyurethane films

Progress in Organic Coatings, Год журнала: 2025, Номер 201, С. 109109 - 109109

Опубликована: Фев. 11, 2025

Язык: Английский

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Benign and Sustainable Methods for the Synthesis of Green Polymers

Elsevier eBooks, Год журнала: 2025, Номер unknown

Опубликована: Янв. 1, 2025

Язык: Английский

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Synthesis of Functional Pectin‐Based Hydrogels via Thiol‐Maleimide Click Reaction for Enhanced Drug Encapsulation and Release

Journal of Applied Polymer Science, Год журнала: 2025, Номер unknown

Опубликована: Фев. 12, 2025

ABSTRACT This work describes the synthesis and characterization of a novel hydrogel system based on pectin (PT) functionalized with thiol maleimide groups cross‐linked by thiol‐maleimide click chemistry. Thiolated PT (PT‐SH) maleimide‐modified (PT‐Ma) precursors were synthesized carbodiimide‐mediated amidation confirmed elemental analysis, FTIR, 1H NMR spectroscopy. The resulting exhibited gelation efficiency over 80%, swelling degrees ranging from 44% to 80% depending cross‐linking density, pH‐sensitive behavior maximum at pH 8. demonstrated high mechanical stability, compressive strengths 20.8–33.2 kPa, increasing density. As model drug, ibuprofen was encapsulated efficiencies up 337 mg/g released in controlled fashion. In vitro release studies showed slower acidic environments, which ranged 22% 53% within 6–10 h, faster slightly alkaline environment, consistent profile hydrogel. Such properties underline hydrogel's potential for sustained drug delivery. Pectin hydrogels, upon cross‐linking, are hereby presented be strong platform biomedical applications properties, behavior, performance

Язык: Английский

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Sustainable Bio-based Polyurethane Adhesives Utilizing PPG2000 and Renewable Polyols: Synthesis, Characterization, and Mechanical Properties

Research Square (Research Square), Год журнала: 2025, Номер unknown

Опубликована: Апрель 2, 2025

Developing high-performance, sustainable adhesives for automotive, aerospace, and industrial applications remains a major challenge due to the inherent trade-off between mechanical strength thermal stability in bio-based materials. While previous studies have explored polyurethane (PU) adhesives, achieving superior adhesion durability challenging when compared petroleum-based counterparts. This study presents novel adhesive system utilizing polypropylene glycol (PPG2000), isophorone diisocyanate (IPDI), renewable polyols (isosorbide-derived polyols, diglycerol, glycerol). The were synthesized via controlled one-shot polymerization process with 4-tert-butylphenol as an end-capping agent, enabling precise modulation of crosslink density molecular architecture. Fourier-transform infrared (FT-IR) spectroscopy confirmed complete urethane bond formation, isocyanate group (NCO%) titration validated stoichiometric conversion. Gel permeation chromatography (GPC) revealed distinct weight distributions, which influence performance by affecting density, elasticity, depending on polyol structure. Thermal analysis showed that isosorbide-derived formulations exhibited up 25°C higher degradation onset temperature 10°C increase glass transition (Tg) adhesives. Meanwhile, containing diglycerol glycerol demonstrated 39% shear (32.5 MPa) 77% improved impact resistance (36.8 relative reference system, attributed optimized segmental mobility crosslinking effects. work establishes strategic framework designing while acknowledging limitations such potential variability raw material sources suggesting future research into long-term environmental performance, not only surpasses conventional systems but also aligns principles green chemistry innovation. These findings offer pathway next-generation structural applications.

Язык: Английский

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Click Synthesis and the Properties Study of Sustainable and Biodegradable Furan-based Poly(imino-furano-triazole)

Journal of Polymers and the Environment, Год журнала: 2025, Номер unknown

Опубликована: Май 15, 2025

Язык: Английский

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