Copolymerization Involving Sulfur-Containing Monomers

Chemical Reviews, Год журнала: 2023, Номер 123(24), С. 14038 - 14083

Опубликована: Ноя. 2, 2023

Incorporating sulfur (S) atoms into polymer main chains endows these materials with many attractive features, including a high refractive index, mechanical properties, electrochemical and adhesive ability to heavy metal ions. The copolymerization involving S-containing monomers constitutes facile method for effectively constructing polymers diverse structures, readily tunable sequences, topological structures. In this review, we describe the recent advances in synthesis of via or multicomponent polymerization techniques concerning variety monomers, such as dithiols, carbon disulfide, carbonyl sulfide, cyclic thioanhydrides, episulfides elemental (S8). Particularly, significant focus is paid precise control main-chain sequence, stereochemistry, structure achieving high-value applications.

Язык: Английский

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Synthesis and Deconstruction of Polyethylene-type Materials

Chemical Reviews, Год журнала: 2024, Номер 124(5), С. 2327 - 2351

Опубликована: Фев. 26, 2024

Polyethylene deconstruction to reusable smaller molecules is hindered by the chemical inertness of its hydrocarbon chains. Pyrolysis and related approaches commonly require high temperatures, are energy-intensive, yield mixtures multiple classes compounds. Selective cleavage reactions under mild conditions (

Язык: Английский

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Lifecycle Management for Sustainable Plastics: Recent Progress from Synthesis, Processing to Upcycling

Advanced Materials, Год журнала: 2024, Номер 36(33)

Опубликована: Июнь 13, 2024

Abstract Plastics, renowned for their outstanding properties and extensive applications, assume an indispensable irreplaceable role in modern society. However, the ubiquitous consumption of plastic items has led to a growing accumulation waste. Unreasonable practices production, utilization, recycling plastics have substantial energy resource depletion environmental pollution. Herein, state‐of‐the‐art advancements lifecycle management are timely reviewed. Unlike typical reviews focused on recycling, this work presents in‐depth analysis entire plastics, covering whole process from synthesis, processing, ultimate disposal. The primary emphasis lies selecting judicious strategies methodologies at each stage mitigate adverse impact waste plastics. Specifically, article delineates rationale, methods, realized various stages through both physical chemical pathways. focal point is attainment optimal rates thereby alleviating ecological burden By scrutinizing aims furnish comprehensive solutions reducing pollution fostering sustainability across all facets

Язык: Английский

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New sustainable polymers with on-demand depolymerization property

Science China Chemistry, Год журнала: 2024, Номер 67(9), С. 2803 - 2841

Опубликована: Авг. 12, 2024

Язык: Английский

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Sustainable high-density polyethylene via chemical recycling: From modification to polymerization methods

Polymer, Год журнала: 2024, Номер unknown, С. 126698 - 126698

Опубликована: Янв. 1, 2024

Язык: Английский

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Modulating Polymerization Behaviors of Ether–Ester Monomers and Physicochemical Properties of Poly(ether-alt-ester)s by Heteroatom Substitutions

Macromolecules, Год журнала: 2024, Номер 57(3), С. 869 - 879

Опубликована: Янв. 24, 2024

The design of cyclic monomers is crucial for the development polymers with ideal thermal and mechanical properties by ring-opening polymerization. Herein, we provide a systematic investigation into thio-modification effects on polymerization behavior ether–ester final corresponding poly(ether-alt-ester)s. position significantly affected thermodynamics thus could regulate ceiling temperature (Tc). O-to-S substitutions in monomer′s ether/ester sites would increase α-H acidity, catalytic system strictly determined chain initiation process as well chain-end groups. Density functional theory calculations experimental studies revealed that at ester site accelerate under same conditions, thanks to high reactivity thioester group strong nucleophilicity end. resulting poly(ether-alt-ester)s exhibited crystallinity, precisely tunable physicochemical properties, recyclability, high-density polyethylene-like which exemplifies potential heteroatom modification modulating poly(ether-alt-ester)′s properties. This detailed structure–(de)polymerizability structure–property relationships will inspire future monomer toward performance.

Язык: Английский

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Catalytic chemical recycling and upcycling of polyolefin plastics

Giant, Год журнала: 2024, Номер 19, С. 100307 - 100307

Опубликована: Июнь 14, 2024

Polyolefins are the most produced and widely used polymeric materials. However, chemically inert nature of polyolefins has led to severe environmental pollution, posing a threat human sustenance development. Managing recycling polyolefin plastic waste is crucial for transition from linear sustainable circular economy. Catalytic chemical includes traditional techniques like pyrolysis photolysis, innovative methods that introduce cleavable bonds into chain closed-loop recycling. post-functionalization post-consumer materials another strategy tackle waste, aiming upgrade materials' utility contribute sustainability. Overall, developing catalytic deconstructing upcycling plastics essential encourage better reclamation practices reduce impact waste.

Язык: Английский

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Ring‐Opening Terpolymerisation of Elemental Sulfur Waste with Propylene Oxide and Carbon Disulfide via Lithium Catalysis

Angewandte Chemie International Edition, Год журнала: 2024, Номер 63(17)

Опубликована: Фев. 29, 2024

Abstract Elemental sulfur, a waste product of the oil refinement process, represents promising raw material for synthesis degradable polymers. We show that simple lithium alkoxides facilitate polymerisation elemental sulfur S 8 with industrially relevant propylene oxide (PO) and CS 2 (a base chemical sourced from itself) to give poly(monothiocarbonate‐alt‐S x ) in which can be controlled by amount supplied sulfur. The situ generation thiolate intermediates obtained rearrangement, follows PO incorporation, allows combine epoxides into one polymer sequence would otherwise not possible. Mechanistic investigations reveal alkyl oligosulfide ring opening chain length equilibration represent better nucleophiles inserting next if compared trithiocarbonates competing addition, causes selectivity. polymers crosslinked multifunctional thiols yield reprocessable networks. Our report demonstrates how mechanistic understanding intrinsically incompatible building blocks utilisation.

Язык: Английский

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Oxygen vacancies-promoted removal of COS via catalytic hydrolysis over CuTiO2-δ nanoflowers

Chemical Engineering Journal, Год журнала: 2024, Номер 492, С. 152322 - 152322

Опубликована: Май 17, 2024

Язык: Английский

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Sulfur‐Rich Polymers Coatings

Advanced Functional Materials, Год журнала: 2024, Номер 34(44)

Опубликована: Май 20, 2024

Abstract Advancements in the synthesis of sulfur‐rich materials are driving progress across diverse fields owing to rich and tunable functionalities those materials. These typically valued for their electrochemical behaviors, high refractive indices, heavy metal affinity, ability form dynamic covalent bonding. As a result, applications span various industries including electronics, catalysis, lithium‐sulfur batteries, water reclamation, optoelectronics. Moreover, elemental sulfur, byproduct petroleum industry, is produced abundantly, necessitating exploration novel valorization routes polymers made from this feedstock. The unique combination properties also makes them an ideal platform development high‐performance functional coatings, offering durability tailored protective thus enhancing lifespan performances variety environmental conditions. presence bonds many enables creation self‐healing while sulfur itself or comonomers can contribute antimicrobial, antifouling, corrosion‐resistant properties. Furthermore, have potential be used design icephobic superhydrophobic coatings. This underscores versatility as advanced coatings with superior

Язык: Английский

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