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

Small, Journal Year: 2024, Volume and Issue: unknown

Published: Oct. 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.

Language: Английский

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Flame Retardancy Enhancement of Styrene–Butadiene Rubber Using Sepiolite Ionogels

Macromolecular Chemistry and Physics, Journal Year: 2025, Volume and Issue: unknown

Published: Feb. 9, 2025

Abstract When using traditional flame retardants, rubber faces the trade‐off between improving retardancy and maintaining mechanical properties. Herein, a novel retardant of sepiolite‐based ionogels (IL@ASep) with both reinforcement functions is developed. This work explores properties composites made from compound filled sepiolite (Sep) different modification methods. The results indicate that addition IL@ASep helps to simultaneously improve compound. materials have limiting oxygen index 30.7% modulus at 100% 4.95 MPa, whereas samples without fillers 23.5% 3.77 MPa. compared original samples, total heat release peak decreased by 55.3% 39.2%, respectively. Furthermore, method adding ionic liquid (IL) also expected other polymers.

Language: Английский

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Intermolecular hydrogen bonding enabling mechanically robust, thermally stable, and solvent-resistance bio-based polyimine networks

Composites Part A Applied Science and Manufacturing, Journal Year: 2025, Volume and Issue: unknown, P. 109006 - 109006

Published: May 1, 2025

Language: Английский

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Peach Gum-Based Polyimine Networks with Water Resistant, High Strength and Recycling Performances

Published: Jan. 1, 2024

Language: Английский

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Peach gum-based polyimine networks with water resistant, high strength and recycling performances

Polymer, Journal Year: 2024, Volume and Issue: 315, P. 127845 - 127845

Published: Nov. 13, 2024

Language: Английский

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