Soft‐Rigid Construction of Mechanically Robust, Thermally Stable, and Self‐Healing Polyimine Networks with Strongly Recyclable Adhesion

Small, Год журнала: 2024, Номер unknown

Опубликована: Окт. 11, 2024

Abstract Reversible and recyclable thermosets have garnered increasing attention for their smart functionality sustainability. However, they still face challenges in balancing comprehensive performance dynamic features. Herein, silicon (Si)─oxygen (O) imidazole units covalent bonds are coupled to generate a new class of bio‐polyimines (Bio‐Si‐PABZs), endow them with high excellent reprocessing capability acid‐degradability. By tailoring the molar content diamines, this Bio‐Si‐PABZs displayed both markedly glass transition temperature (162 °C) char yield at 800 °C an oxygen atmosphere (73.1%). These favorable properties outperformed various previously reported polyimines competed effectively commercial fossil‐based polycarbonate. Moreover, scratch (≈10 µ m) on surface samples can be self‐healing within only 2 min, effective “ Bird Nest ”‐to‐“ Torch ” recycling also achieved through free amines solution. Most importantly, bio‐based siloxane adhesive derived from intermediate Bio‐Si‐PABZ‐1 by acidic degradation demonstrated broad robust adhesion substrates, values reaching up ≈3.5 MPa. For first time, study lays scientific groundwork designing polyimine Si─O units, as well converting plastic wastes into thermal‐reversibility renewable adhesives.

Язык: Английский

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Biomimetic Nanostructured Polyimine Aerogels with Graded Porosity, Flame Resistance, Intrinsic Superhydrophobicity, and Closed-Loop Recovery

ACS Nano, Год журнала: 2024, Номер 18(52), С. 35465 - 35479

Опубликована: Дек. 16, 2024

Polymer aerogels, with their porous and lightweight features, excel in applications such as energy storage, absorption, thermal insulation, making them a sought-after new material. However, the covalent cross-linking networks of current polymer aerogels result unsustainable manufacturing processing practices, persistently depleting our finite natural resources causing significant global environmental impacts. Herein, we have constructed high-performance dynamic aerogel network using biobased materials, its structure green sustainability akin to those plants nature. Abundant reversible points endow ultrafast degradation capabilities, enabling allow for closed-loop chemical monomer recovery reprocessing. Furthermore, utilizing highly active network, net-zero emission material reuse reprocessing can be achieved. Additionally, controlled features multilevel roughness nanostructured surface similar lotus leaf biomimetic pore structure, contributing anisotropy. The distinctive composition high compressive strength (2.2 MPa) vertically, low conductivity (0.0257 W/(m·K)) horizontally, outstanding fire resistance (LOI is 36%). Notably, demonstrates highest hydrophobicity among polyimine contact angle 154°. excellent performance variety potential oil–water separation, directional transport, phase change it anticipated that these will greatly benefit from systematic upgrades recyclability

Язык: Английский

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A novel strategy utilizing oxidation states of phosphorus for designing efficient phosphorus-containing flame retardants and its performance in epoxy resins

Polymer Degradation and Stability, Год журнала: 2024, Номер unknown, С. 111016 - 111016

Опубликована: Сен. 1, 2024

Язык: Английский

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Self-assembly of phosphorus-containing ionic liquids on black phosphorus nanosheets for enhancing the fire safety of ethylene-vinyl acetate copolymers

Colloids and Surfaces A Physicochemical and Engineering Aspects, Год журнала: 2025, Номер unknown, С. 136427 - 136427

Опубликована: Фев. 1, 2025

Язык: Английский

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“Rigid-Flexible” structured polyimine/graphite felt composites with excellent fire Resistance, electromagnetic shielding and recyclability

Chemical Engineering Journal, Год журнала: 2024, Номер 501, С. 157610 - 157610

Опубликована: Ноя. 12, 2024

Язык: Английский

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Graphitic nanotubes confined with Ni nanocrystals: Artificial armor for ammonium polyphosphate towards fire-safe epoxy composite

Applied Surface Science, Год журнала: 2024, Номер unknown, С. 161874 - 161874

Опубликована: Ноя. 1, 2024

Язык: Английский

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Biomimetic, Mechanically Strong and Sensitive Cyclic Fire Warning Sensor Based on High-concentration Exfoliated MoS2 and Poly-p-phenylene benzobisoxazole Film

Composites Communications, Год журнала: 2025, Номер unknown, С. 102309 - 102309

Опубликована: Фев. 1, 2025

Язык: Английский

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Polyphosphonitrile modified fabric: Preparation and the improvement of flame retardancy, hydrophobic and abrasion resistance

Progress in Organic Coatings, Год журнала: 2025, Номер 205, С. 109302 - 109302

Опубликована: Апрель 14, 2025

Язык: Английский

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Highly transparent, mechanically strong, recyclable, and flame-retardant vanillin-modified poly(urethane-urea) elastomers via dynamic oxime-urethane bonds and hydrogen bonds

Chemical Engineering Journal, Год журнала: 2025, Номер 514, С. 163416 - 163416

Опубликована: Май 5, 2025

Язык: Английский

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Engineering Bio-chain Extender and DOPO-based Flame Retardant toward Intrinsically Flame Retardant and Mechanically Robust Polyurea

Polymer, Год журнала: 2025, Номер 329, С. 128437 - 128437

Опубликована: Май 3, 2025

Язык: Английский

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