High-Molecular-Weight Biobased Polycarbonate Preparation Using Metal-Free Deep Eutectic Solvents: Efficient Activation of the Hydroxyl Groups DOI

Wentao Zhang,

Mi Feng, Shijie Wang

et al.

Industrial & Engineering Chemistry Research, Journal Year: 2024, Volume and Issue: 63(44), P. 18804 - 18817

Published: Oct. 23, 2024

Activating hydroxyl groups in monomers is crucial for preparing high-molecular-weight bioderived polycarbonates. Herein, we developed metal-free deep eutectic solvents (DESs) to activate endo- and exo-hydroxyl isosorbide (ISB) through hydrogen bonding interactions, facilitating the preparation of poly(isosorbide carbonate) (PIC) by melt polycondensation with diphenyl carbonate (DPC). Catalytic evaluation results indicated that Brønsted acid–base properties DESs had a greater impact on Mn PIC than molecular size Lewis properties. The pH value close 7, smaller size, higher acidity yielded PICs Mn. formation bonds between DES monomer was conducive PIC. Among all catalysts, synthesis catalyzed choline chloride–ethylene glycol (n:n = 1:2) highest Mn, reaching 116,100 g·mol–1. Obtained maintained high transmittance (>90%) low yellowness (b* < 0.40). Mechanistic study demonstrated synergistic activation ISB DPC sites acceptor donor prepare This strategy not only provides low-cost efficient method synthesizing but also offers catalyst design guidance activation.

Language: Английский

Recyclable High-Performance Thermosetting Plastics from Isosorbide Based on Diels–Alder Reaction DOI
Jianjun Li, Weijun Yang, Pengwu Xu

et al.

Industrial & Engineering Chemistry Research, Journal Year: 2025, Volume and Issue: unknown

Published: March 19, 2025

Language: Английский

Citations

0
Boosting Energy Dissipation and Degradation Behaviors: Cation‐π Interactions as a Key to Stimuli Responsive Epoxy Adhesives DOI Open Access
Yibo Shen, Yueshan Li,

Fei Cong

et al.

Advanced Functional Materials, Journal Year: 2025, Volume and Issue: unknown

Published: March 26, 2025

Abstract Epoxy resins, widely recognized for their stable cross‐linked structures and extensive use as adhesives, face a fundamental challenge in balancing high‐performance attributes with dynamic functionalities. To address this, novel strategy leveraging synergistic effects is proposed to amplify bonds within the resin network. Specifically, an ionic monomer featuring imidazole cations benzene rings synthesized combined four‐arm thiol‐containing ester groups, forming network through dual curing process. This design endows thermoset multiple stimuli‐responsive The groups are pivotal enabling resin's degradability reprocessability, while non‐covalent cation‐π interactions significantly enhance energy dissipation, resulting superior mechanical properties. Notably, not only lower barrier of epoxy thermal reaction but also accelerate hydrolysis via hydrogen bonding. work demonstrates tunable responsive adhesive cyclic features, offering promising candidate functional applications devices beyond. innovative integration provides versatile platform designing next‐generation resins both high performance full life‐cycle sustainability.

Language: Английский

Citations

0
High-Molecular-Weight Biobased Polycarbonate Preparation Using Metal-Free Deep Eutectic Solvents: Efficient Activation of the Hydroxyl Groups DOI

Wentao Zhang,

Mi Feng, Shijie Wang

et al.

Industrial & Engineering Chemistry Research, Journal Year: 2024, Volume and Issue: 63(44), P. 18804 - 18817

Published: Oct. 23, 2024

Activating hydroxyl groups in monomers is crucial for preparing high-molecular-weight bioderived polycarbonates. Herein, we developed metal-free deep eutectic solvents (DESs) to activate endo- and exo-hydroxyl isosorbide (ISB) through hydrogen bonding interactions, facilitating the preparation of poly(isosorbide carbonate) (PIC) by melt polycondensation with diphenyl carbonate (DPC). Catalytic evaluation results indicated that Brønsted acid–base properties DESs had a greater impact on Mn PIC than molecular size Lewis properties. The pH value close 7, smaller size, higher acidity yielded PICs Mn. formation bonds between DES monomer was conducive PIC. Among all catalysts, synthesis catalyzed choline chloride–ethylene glycol (n:n = 1:2) highest Mn, reaching 116,100 g·mol–1. Obtained maintained high transmittance (>90%) low yellowness (b* < 0.40). Mechanistic study demonstrated synergistic activation ISB DPC sites acceptor donor prepare This strategy not only provides low-cost efficient method synthesizing but also offers catalyst design guidance activation.

Language: Английский

Citations

0