Enhancing Dynamic Modulation in Covalent Adaptable Networks via Accurate Manipulation of Functional Moieties in Vinylogous Ester Monomers DOI

Xinru Guo,

Fei Gao,

Fengbiao Chen

et al.

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

Published: Dec. 3, 2024

An effective and accurate strategy for tailoring the dynamic properties of covalent adaptable networks (CANs), which relies on capability to trigger bond rearrangements within polymer network, involves precise control material's microstructure through molecular-scale structural design. Herein, we propose a novel approach modulate dynamics vinylogous bonds by changing adjacent chemical moieties functional monomers, thereby enabling reversible exchange reactions with alcoholic hydroxyl groups. Vinylogous bonds-modified carbonyl group (vinylogous ester bond) revealed behavior at lower temperature than attaching motif carbonate bond). It was attributed extended conjugated region in moieties. Meanwhile, exhibited dissociative mechanism, an association mechanism offered motifs. Additionally, CANs composed (BPAP–OH) displayed rapid feature activated energy, compared that consisting Similarly, shape fixation ratio also indicates comparable properties. is noteworthy BPAP–OH enables degradation DMSO recyclability hot press. This offers versatile tool tuning characteristics exploring their potential various applications.

Language: Английский

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

Zichen Jia,

Haiyue Wang, Ping Yu

et al.

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

Citations

6
Ultra-Strong, Humidity-Tolerant Thermoset Based on Dynamic Covalent Bond Integration Strategy via Boron−Nitrogen Bidentate Coordination DOI
Wenliang Wei, Xiaoting Zhang, Chenyue Liang

et al.

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

Published: Jan. 27, 2025

Language: Английский

Citations

0
Insights into the Effect of Segment Rearrangement Induced by Dynamic Disulfide Bond on UV Aging Resistance of UV-induced Self-compensated Epoxy Crosslinked Network DOI
Mingli Wang, Ziyu Liu, Tiancheng Wang

et al.

Polymer Degradation and Stability, Journal Year: 2025, Volume and Issue: unknown, P. 111352 - 111352

Published: March 1, 2025

Language: Английский

Citations

0
Recyclable fire-retardant bio-based thermosets: From molecular engineering to performances and applications DOI Creative Commons
Yong Guo, Qingshan Yang, Siqi Huo

et al.

Progress in Polymer Science, Journal Year: 2025, Volume and Issue: unknown, P. 101935 - 101935

Published: March 1, 2025

Language: Английский

Citations

0
Exploring α-Lipoic Acid Based Thermoplastic Silicone Adhesive: Towards Sustainable and Green Recycling DOI Open Access

Jiaqi Wang,

Zhenhua Chu, Sijia Zheng

et al.

Polymers, Journal Year: 2024, Volume and Issue: 16(23), P. 3254 - 3254

Published: Nov. 22, 2024

Considering the demand for construction of a sustainable future, it is essential to endow conventional thermoset silicone adhesive with reuse capability and recyclability. Although various research attempts have been made by incorporating reversible linkages, developing adhesives natural linkers still challenging, as interface between linker historically difficult. We exploited possibility utilizing

Language: Английский

Citations

0
Enhancing Dynamic Modulation in Covalent Adaptable Networks via Accurate Manipulation of Functional Moieties in Vinylogous Ester Monomers DOI

Xinru Guo,

Fei Gao,

Fengbiao Chen

et al.

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

Published: Dec. 3, 2024

An effective and accurate strategy for tailoring the dynamic properties of covalent adaptable networks (CANs), which relies on capability to trigger bond rearrangements within polymer network, involves precise control material's microstructure through molecular-scale structural design. Herein, we propose a novel approach modulate dynamics vinylogous bonds by changing adjacent chemical moieties functional monomers, thereby enabling reversible exchange reactions with alcoholic hydroxyl groups. Vinylogous bonds-modified carbonyl group (vinylogous ester bond) revealed behavior at lower temperature than attaching motif carbonate bond). It was attributed extended conjugated region in moieties. Meanwhile, exhibited dissociative mechanism, an association mechanism offered motifs. Additionally, CANs composed (BPAP–OH) displayed rapid feature activated energy, compared that consisting Similarly, shape fixation ratio also indicates comparable properties. is noteworthy BPAP–OH enables degradation DMSO recyclability hot press. This offers versatile tool tuning characteristics exploring their potential various applications.

Language: Английский

Citations

0