Modular Access from Acrylate to a Sustainable Polyester Platform with Large-Span Tunability and Chemical Circularity under Mild Conditions DOI
Haoyu Fan, Chenyang Hu,

Mingxin Niu

и другие.

Journal of the American Chemical Society, Год журнала: 2025, Номер unknown

Опубликована: Март 4, 2025

Making polyesters with conventional vinyl monomers is one of the most economical ways to develop sustainable polymeric materials. For polar vinyls, while their transformation into lactones has been studied extensively, there exists no further access synthesizing polyesters, presumably due nonstrained and nonpolymerizable nature obtained lactones. Herein, we report first facile synthesis that originated from critical classes vinyls-acrylates. Specifically, a series modular six-membered were rationally designed synthesized methyl acrylate together malonic esters containing diverse functional groups formaldehyde. The underwent ring-opening polymerization (ROP) yield acrylate-derived which constitute unique polymer platform large scope potential functionalities performances as well easy chemical circularity under mild conditions. Notably, are rare example featuring tunable on side ester whose impact certain material properties (e.g., glass transition temperature) similar polyacrylates, implying replacement between polyacrylates. In addition, by presenting special geminal disubstitutions originally monomers' γ-position for time, also exhibited unprecedentedly enhanced thermal recycling properties: Variation offers large-span modulation completely amorphous high-level crystalline materials, melting temperature high crystallinity was drastically increased 84 °C compared reported monosubstituted counterpart. At same other required harsh conditions (>150 vacuum), gem-disubstituted in this work can undergo complete much milder (80 ambient pressure). This study informs design future high-performance derived vinyls.

Язык: Английский

Current status and outlook for ATRP DOI Creative Commons
Krzysztof Matyjaszewski

European Polymer Journal, Год журнала: 2024, Номер 211, С. 113001 - 113001

Опубликована: Март 30, 2024

Atom transfer radical polymerization (ATRP) is one of the most often used controlled techniques. It employs very small amounts (ppm) Cu complexes in presence various chemical reducing agents but also external stimuli such as light, electrical current or mechanical forces. can be carried out bulk, solution, and dispersed media. ATRP has been successfully to prepare polymers with architecture well-defined topology, composition, functionality, well bioconjugates organic–inorganic hybrids. This article summarizes status an outlook for ATRP.

Язык: Английский

Процитировано

19
Visible light–triggered depolymerization of commercial polymethacrylates DOI
Hyun Suk Wang, Mikhail Agrachev, Hongsik Kim

и другие.

Science, Год журнала: 2025, Номер 387(6736), С. 874 - 880

Опубликована: Фев. 20, 2025

The reversion of vinyl polymers with carbon-carbon backbones to their monomers represents an ideal path alleviate the growing plastic waste stream. However, depolymerizing such stable materials remains a challenge, state-of-the-art methods relying on "designer" that are neither commercially produced nor suitable for real-world applications. In this work, we report main chain-initiated, visible light-triggered depolymerization directly applicable commercial containing undisclosed impurities (e.g., comonomers, additives, or dyes). By in situ generation chlorine radicals from solvent, near-quantitative (>98%) polymethacrylates could be achieved regardless synthetic route radical ionic polymerization), end group, and molecular weight (up 1.6 million daltons). possibility perform multigram-scale depolymerizations confer temporal control renders methodology versatile general recycling.

Язык: Английский

Процитировано

3
Photoiniferter Polymerization: Illuminating the History, Ascendency, and Renaissance DOI
Rhys W. Hughes, Megan E. Lott,

Rebecca A. Olson S

и другие.

Progress in Polymer Science, Год журнала: 2024, Номер 156, С. 101871 - 101871

Опубликована: Авг. 22, 2024

Язык: Английский

Процитировано

9
Closed-loop recyclable polymers: from monomer and polymer design to the polymerization–depolymerization cycle DOI

Shuaiqi Yang,

Shuai Du,

Jin Zhu

и другие.

Chemical Society Reviews, Год журнала: 2024, Номер 53(19), С. 9609 - 9651

Опубликована: Янв. 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.

Язык: Английский

Процитировано

8
Photocontrolled radical polymerization for the synthesis of ultrahigh-molecular-weight polymers DOI
Shilong Zhu, Weina Kong,

Shuangqi Lian

и другие.

Nature Synthesis, Год журнала: 2025, Номер unknown

Опубликована: Янв. 10, 2025

Язык: Английский

Процитировано

1
Interlayer Assembly of Thin‐Film Composite Membranes With Ultra‐Interfacial Adhesion DOI Open Access
Chao Sang, Siyuan Zhang, Geng Li

и другие.

Advanced Functional Materials, Год журнала: 2025, Номер unknown

Опубликована: Фев. 16, 2025

Abstract Thin‐film composite (TFC) membranes are considered as an effective architecture to achieve selective separation for various application scenarios. However, most polymeric layers in physically contacted with underlying porous substrate, where the physical exfoliation or over‐swelling of layer severely shortens usage lifespan. In this work, a novel interlayer assembly design is proposed realize polydimethylsiloxane (PDMS)/polyvinylidene fluoride (PVDF) TFC membrane ultra‐interfacial adhesion via UV‐triggered covalent attachment. Especially, by overcoming chemical inertness PVDF, synthetic methacrylate‐functionalized PVDF substrate rapidly copolymerized PDMS layer. It shows that critical load failure 56.92 mN applied nano‐scratch, 59% higher than pristine one and also being highest interfacial strength among reported state‐of‐the‐art ones. The resulting excellent pervaporation performance phenol one, stable running average factor 7.3 flux 3142 g m −2 h −1 under extreme conditions (e.g., high concentration 20 wt.% temperature 80 °C). This chemically bonded principle provides scalable approach develop ultra‐stable efficient‐separation adaptable purposes.

Язык: Английский

Процитировано

1
Mechanochemical Backbone Editing for Controlled Degradation of Vinyl Polymers DOI
Zhuang Li, Xiaohui Zhang, Yajun Zhao

и другие.

Angewandte Chemie International Edition, Год журнала: 2024, Номер 63(33)

Опубликована: Май 27, 2024

The chemically inert nature of fully saturated hydrocarbon backbones endows vinyl polymers with desirable durability, but it also leads to their significant environmental persistence. Enhancing the sustainability these materials requires a pivotal yet challenging shift: transforming backbone into one that is degradable. Here, we present versatile platform for mechanochemically editing towards degradable polymer chains by integrating cyclobutene-fused succinimide (CBS) units along through photo-iniferter reversible addition-fragmentation chain-transfer (RAFT) copolymerization. Significantly, evenly insertion CBS does not compromise thermal or chemical stability rather offers means adjust properties polymethylacrylate (PMA). Meanwhile, reactive acyclic imide can be selectively introduced mechanochemical activation (pulse ultrasonication ball-milling grinding) when required. Subsequent hydrolysis groups enables efficient degradation, yielding telechelic oligomers. This approach holds promise inspiring design and modification more environmentally friendly editing.

Язык: Английский

Процитировано

7
Thermal Solution Depolymerization of RAFT Telechelic Polymers DOI Creative Commons
Nethmi De Alwis Watuthanthrige, Richard Whitfield, Simon Harrisson

и другие.

ACS Macro Letters, Год журнала: 2024, Номер 13(7), С. 806 - 811

Опубликована: Июнь 10, 2024

Thermal solution depolymerization is a promising low-temperature chemical recycling strategy enabling high monomer recovery from polymers made by controlled radical polymerization. However, current methodologies predominantly focus on the of monofunctional polymers, limiting material scope and pathways. Herein, we report telechelic synthesized RAFT Notably, observed significant decrease in molecular weight (Mn) during recovery, which contrasts minimal Mn shift polymers. Introducing Z groups at center or both ends polymer resulted distinct kinetic profiles, indicating partial bifunctional as supported mathematical modeling. Remarkably, featuring R-terminal showed up to 68% improvement overall conversion compared their analogues, highlighting potential these materials circular economy.

Язык: Английский

Процитировано

7
Open-Air Chemical Recycling: Fully Oxygen-Tolerant ATRP Depolymerization DOI Creative Commons
Stella Afroditi Mountaki, Richard Whitfield, Evelina Liarou

и другие.

Journal of the American Chemical Society, Год журнала: 2024, Номер 146(28), С. 18848 - 18854

Опубликована: Июль 3, 2024

While oxygen-tolerant strategies have been overwhelmingly developed for controlled radical polymerizations, the low concentrations typically required high monomer recovery render solution depolymerizations particularly challenging. Here, an open-air atom transfer polymerization (ATRP) depolymerization is presented, whereby a small amount of volatile cosolvent introduced as means to thoroughly remove oxygen. Ultrafast (i.e., 2 min) could efficiently proceed in open vessel, allowing very retrieval be achieved ∼91% efficiency), on par with that fully deoxygenated analogue. Oxygen probe studies combined detailed kinetics revealed importance low-boiling point removing oxygen prior reaction, thus facilitating effective depolymerization. The versatility methodology was demonstrated by performing reactions range different ligands and at polymer loadings (1 M repeat unit concentration) without significantly compromising yield. This approach provides oxygen-tolerant, facile, efficient route chemically recycle ATRP-synthesized polymers, enabling exciting new applications.

Язык: Английский

Процитировано

7
Industrial and Laboratory Technologies for the Chemical Recycling of Plastic Waste DOI Creative Commons

Mason T. Chin,

Tianning Diao

ACS Catalysis, Год журнала: 2024, Номер 14(16), С. 12437 - 12453

Опубликована: Авг. 5, 2024

Synthetic polymers play an indispensable role in modern society, finding applications across various sectors ranging from packaging, textiles, and consumer products to construction, electronics, industrial machinery. Commodity plastics are cheap produce, widely available, versatile meet diverse application needs. As a result, millions of metric tons manufactured annually. However, current approaches for the chemical recycling postconsumer plastic waste, primarily based on pyrolysis, lag efficiency compared their production methods. In recent years, significant research has focused developing milder, economically viable methods commodity plastics, which involves converting waste back into monomers or transforming it other valuable chemicals. This Perspective examines both cutting-edge laboratory-scale contributing advancements field recycling.

Язык: Английский

Процитировано

7