Polymer Degradation and Stability, Journal Year: 2024, Volume and Issue: 229, P. 110948 - 110948
Published: Aug. 10, 2024
Language: Английский
International Journal of Biological Sciences, Journal Year: 2024, Volume and Issue: 20(14), P. 5779 - 5792
Published: Oct. 21, 2024
The escalation of plastic pollution represents a global environmental and health problem. Important toxic effects have been attributed to the increasing diffusion microplastics (MPs) nanoplastics (NPs) derived from degradation plastics. These particles ubiquitously observed in environment, with humans being continuously exposed via ingestion, inhalation skin contact. Nonetheless, cellular homeostasis imbalance induced by micro- nano- plastics (MNPs) human has only recently shown, while most evidence molecular mechanisms studies
Language: Английский
Citations
6
Polymer Chemistry, Journal Year: 2024, Volume and Issue: 15(25), P. 2537 - 2547
Published: Jan. 1, 2024
Radical decarboxylation has emerged as a powerful tool in polymer chemistry. This review discusses the history of radical and its applications synthesis, crosslinking, functionalisation, degradation depolymerisation.
Language: Английский
Citations
5
Journal of the American Chemical Society, Journal Year: 2024, Volume and Issue: 146(30), P. 20972 - 20981
Published: July 23, 2024
Catalyst-free and reversible step-growth Diels-Alder (DA) polymerization has a wide range of applications in polymer synthesis is promising method for fabricating recyclable thermoplastics. The effectiveness depolymerization relies on the chemical building blocks, often utilizing furan as diene maleimide dienophile. Compared to traditional diene-dienophile or two-component approach that requires precise stoichiometry, cyclopentadiene (Cp) can serve dual roles via self-dimerization. This internally balanced platform offers route access high-molecular-weight polymers dynamic handle recycling, which yet be explored. Herein, through reactivity investigation different telechelic Cp derivatives, uncontrolled cross-linking was addressed, revealing first successful DA homopolymerization. To demonstrate generality our methodology, we synthesized characterized six homopolymers with backbones derived from common thermoplastics, such poly(dimethylsiloxane), hydrogenated polybutadiene, ethylene phthalate. Among these materials, polybutadiene-Cp analog thermally depolymerized (
Language: Английский
Citations
5
Applied Surface Science, Journal Year: 2024, Volume and Issue: 673, P. 160894 - 160894
Published: Aug. 3, 2024
Chemical recycling of polycarbonate (PC) recovers valuable chemicals like monomers but often requires catalysts for mild reaction conditions and high conversion rates. This study explores the use metal–organic frameworks (MOFs) as PC methanolysis. We investigated catalytic activity amine-containing MOFs, specifically ZIF-8, MAF-6, UiO-66-NH2, which have basic active sites favouring depolymerisation. MOFs were characterised using X-ray diffraction (XRD), Fourier-transform infrared spectroscopy (FTIR), scanning electron microscopy (SEM), Brunauer–Emmett–Teller (BET) analysis. examined effects temperature, catalyst content, time on efficiency also conducted post-synthetic modification (PSM) MOF-5 to assess its performance in Methanolysis yielded bisphenol A (BPA) dimethyl carbonate (DMC), with rates confirmed by nuclear magnetic resonance (NMR). MOF significantly enhanced compared reactions without catalysts, ZIF-8 MAF-6 achieving nearly 100% conversion. PSM ethylenediamine (ED) led increased Additionally, MOF-based recovered reused up three cycles.
Language: Английский
Citations
5
Polymer Degradation and Stability, Journal Year: 2024, Volume and Issue: 229, P. 110948 - 110948
Published: Aug. 10, 2024
Language: Английский
Citations
5