Novel β-Benzyloxy-Substituted Copolymers of Seven-Membered Cyclic Carbonate: Ring-Opening Polymerization with L-Lactide, ε-Caprolactone and Trimethylenecarbonate DOI Open Access
Valeriia A. Serova, Badma N. Mankaev,

Milana U. Agaeva

et al.

Polymers, Journal Year: 2024, Volume and Issue: 16(23), P. 3364 - 3364

Published: Nov. 29, 2024

To prepare novel biodegradable copolymers with functional substituents that are distributed statistically or randomly over the macromolecule chain and have improved characteristics compared to homopolymers, we conducted a series of synthetic experiments cyclic monomer, 5-(benzyloxy)-1,3-dioxepan-2-one (

Language: Английский

Closed-loop recyclable polymers: from monomer and polymer design to the polymerization–depolymerization cycle DOI

Shuaiqi Yang,

Shuai Du,

Jin Zhu

et al.

Chemical Society Reviews, Journal Year: 2024, Volume and Issue: 53(19), P. 9609 - 9651

Published: Jan. 1, 2024

We present the state-of-the-art of circular polymers based on monomer and polymer design reversible ring-opening addition polymerization reactions without involvement other reactants.

Language: Английский

Citations

9
CO2 and Lignin‐Based Sustainable Polymers with Closed‐Loop Chemical Recycling DOI
Arijit Ghorai, Hoyong Chung

Advanced Functional Materials, Journal Year: 2024, Volume and Issue: unknown

Published: March 19, 2024

Abstract This work highlights the conversion method of chaining up greenhouse gas CO 2 with biomass lignin to develop new sustainable, recyclable polymers from abundant and non‐food based renewable resources. A cyclic carbonate monomer has synthesized using a cost‐effective, non‐phosgene‐based, greener approach under atmospheric pressure room temperature. The fully programable ring‐opening polymerization is accomplished by varying catalyst (DBU TBD), loading (0.5–5.0%) reaction time (2–40 min). best polymer obtained in 1% TBD 30‐min reaction. precise characterization polymers' structure are established spectroscopic analyses including 1 H, 13 C, 2D HSQC NMR, FT‐IR, GPC. exhibit high molecular weights ( M n : 120.34–154.58 kDa) adequate thermal stabilities T d5% 244–277 °C TGA g 33–52 DSC), rendering them advantageous for practical applications. Significantly, lignin‐based have successfully recycled circular plastic economy heating at 90 12 h presence DBU. process yields original monomers another without unwanted changes chemical structures, presenting an ultimate sustainable solution.

Language: Английский

Citations

4
Chemical Closed-loop Recycling of Polymers Realized by Monomer Design DOI Creative Commons
Wuchao Zhao, Jianghua He, Yuetao Zhang

et al.

Fundamental Research, Journal Year: 2024, Volume and Issue: unknown

Published: June 1, 2024

The development of modern society is closely related to polymer materials. However, the improper disposal wastes not only squanders resources but also intensifies environmental issues, despite that energy recovery, physical recycling and chemical pathways have been developed tackle recycle reuse polymers. Among them, considered as most pivotal solution, it can depolymerize back monomers, which then repolymerize into Recently, remarkable progress has made in chemically recyclable polymers through monomer design shift "polymerization-depolymerization" equilibrium realize selective depolymerization achieve closed-loop. This article reviews closed-loop such polyesters, polycarbonates, sulfur-containing polymers, vinyl monomer-based well other types Moreover, challenges prospects this field are discussed.

Language: Английский

Citations

4
Well-controlled Organocatalytic Ring-opening Polymerization of Seven-membered Cyclic Carbonates with Cyclohexyl Fusion DOI
Wei Zhang,

Si‐Yi Shan,

Jiang Dai

et al.

Chemical Research in Chinese Universities, Journal Year: 2024, Volume and Issue: 40(5), P. 856 - 862

Published: June 18, 2024

Language: Английский

Citations

1
Direct Monomer Recovery from Ring-Closing Depolymerization of Thermosets DOI Creative Commons
Chihui Zheng, Gadi Slor, Youwei Ma

et al.

ACS Macro Letters, Journal Year: 2024, Volume and Issue: unknown, P. 1704 - 1710

Published: Dec. 7, 2024

Recovering monomers from the depolymerization of thermosets presents a significant challenge, which becomes even more daunting if one sets goal doing it directly, i.e., without complex chemical separation steps. To this end, we have synthesized new type polycarbonate thermoset by first copolymerizing alkyl cyclic carbonates (ACCs) with small amounts allyloxy (AoCCs), followed cross-linking resulting excess tetrathiol compounds under UV irradiation. These cross-linked polycarbonates demonstrate enhanced thermal and mechanical properties compared to their linear analogues, while maintaining polymers' capacity for ring-closing depolymerization. The process enables direct recovery ACC its dimer, bypassing steps that are commonly employed in recycling conventional chemically recyclable thermosets. yields range 74.7% 91.7% depending on ratios AoCC Furthermore, recovered can be repolymerized AoCCs leading same quality initially one.

Language: Английский

Citations

1
Novel β-Benzyloxy-Substituted Copolymers of Seven-Membered Cyclic Carbonate: Ring-Opening Polymerization with L-Lactide, ε-Caprolactone and Trimethylenecarbonate DOI Open Access
Valeriia A. Serova, Badma N. Mankaev,

Milana U. Agaeva

et al.

Polymers, Journal Year: 2024, Volume and Issue: 16(23), P. 3364 - 3364

Published: Nov. 29, 2024

To prepare novel biodegradable copolymers with functional substituents that are distributed statistically or randomly over the macromolecule chain and have improved characteristics compared to homopolymers, we conducted a series of synthetic experiments cyclic monomer, 5-(benzyloxy)-1,3-dioxepan-2-one (

Language: Английский

Citations

0