Upcycling of Postconsumer PET Using Serinol: Green Preparation of a New Multifunctional Initiator for PLA DOI Creative Commons
Ada M. Truscello,

Chiara Sartiano,

Maurizio Galimberti

et al.

Journal of Applied Polymer Science, Journal Year: 2024, Volume and Issue: 142(10)

Published: Dec. 5, 2024

ABSTRACT Chemical recycling is attracting more and interest as it can transform a plastic scrap into high‐value material. This work shows that the aminolysis of postconsumer poly(ethyleneterephthalate) (PET) with serinol, nontoxic biosourced hydroxyamine, leads to novel multifunctional initiator for poly(lactic acid) (PLA). The reaction was performed at 180°C, without need catalysts, resulted in substantially complete PET, selectively yielding corresponding diamide terephthalic acid (terephthalic serinol bis‐amide, TASBA), together ethylene glycol co‐product. TASBA holds four hydroxy groups used polymerization lactide PLA, 0.1%, 0.5%, 1% w/w respect L‐lactide. led multiarm whose molecular weight thermal rheological properties could be tuned amount initiator. lowest left unaffected higher melt viscosity lower crystallinity. Lower were obtained by increasing TASBA. therefore proposes synergy between most important polyesters, diffused PET compostable PLA.

Language: Английский

Characterization of Properties and Kinetic Analysis of Unsaturated Polyester Resin Synthesized from PET Alcoholysis Waste DOI Open Access
Ruixiang Wang, Hongliang Zhang,

J. J. Liu

et al.

Polymers, Journal Year: 2025, Volume and Issue: 17(6), P. 820 - 820

Published: March 20, 2025

Recycling and reutilization of waste PET through alcoholysis has been a prominent focus current research. However, the process is reversible, leading to generation oligomeric byproducts. To further utilize these wastes, this paper processed derived from various systems synthesize unsaturated polyester resins (UPRs). The fundamental characteristics, mechanical properties, curing processes synthesized UPRs were analyzed based on GPC, FTIR, TG, tensile testing, DMA, DSC tests. results indicate that wastes successfully UPRs. ethylene glycol (EG) diethylene (DEG) possess more complex compositions; among these, UPR EG exhibited higher thermal stability, whereas DEG showed broader molecular weight distribution lower glass transition temperature (Tg). In addition, remarkably high elongation at break (>180%), potentially attributed its long chains. Regarding obtained propylene (PG) slower rates demanded activation energies. Moreover, could be well described by Sesták–Berggren autocatalytic model.

Language: Английский

Citations

0
Chemical recycling of PET by catalyzed aminolysis and its application as a hardener for epoxy coating DOI

Mrunalini M. Padole,

Pawan N. Gawali,

Anagha S. Sabnis

et al.

Polymer Bulletin, Journal Year: 2025, Volume and Issue: unknown

Published: March 22, 2025

Language: Английский

Citations

0
Polyoxometalate-Based Zinc–Organic Network as a Dual-Site Acid Catalyst for the Conversion of Polyethylene Terephthalate Plastic to Terephthalic Acid DOI
Qian Liu, Yanan Sun, Wei Yang

et al.

Inorganic Chemistry, Journal Year: 2025, Volume and Issue: unknown

Published: April 18, 2025

Chemical depolymerization and recycling of poly(ethylene terephthalate) (PET) constitute a sustainable, resource-efficient, environmentally beneficial approach, which requires the development efficient heterogeneous catalysts. Herein, polyoxometalate(POM)-based zinc-organic networks were synthesized as dual-site acid catalysts for alcoholysis PET into value-added terephthalic (TPA) product, with formulas [Zn2(μ2-Cl)(H2O)2(DTAB)3][PW12O40]·4H2O (1), [Zn2(DTAB)4][SiW12O40]·4H2O (2), [Zn2(H2O)4(DTAB)2.5][HBW12O40]·8H2O (3) (DTAB = 1,4-di(4H-1,2,4-triazol-4-yl)benzene). Structural analysis showed that compounds 1 2 composed 2D Zn-ligand embedded POM clusters in an "egg-in-a-box" manner compound 3 consisted 3D POM-based host-guest framework constructed by {Zn2(H2O)4(N-N)3} units [HBW12O40]4- clusters. Three incorporate Zn2+ Lewis centers heteropolytungstate clusters, having strength order > 2. When employed catalysts, three exhibited catalytic performance TPA >92% conversion rate >94% selectivity along excellent recyclability structural stability. This work offers novel perspective upcycling plastic waste.

Language: Английский

Citations

0
Upcycling of Waste Plastics into Value-Added Chemicals DOI Creative Commons
Xu Jin, Jing Zhang

Science for energy and environment., Journal Year: 2025, Volume and Issue: unknown, P. 4 - 4

Published: March 27, 2025

Review Upcycling of Waste Plastics into Value-Added Chemicals Jin Xu and Jing Zhang * State Key Laboratory Chemical Engineering, East China University Science Technology, 130 Meilong Road, Shanghai 200237, Correspondence: [email protected] Received: 8 November 2024; Revised: 22 January 2025; Accepted: 24 March Published: 27 2025 Abstract: The rapid increase in plastic production has led to a severe waste crisis, driving the development various recycling technologies mitigate this growing issue. However, these often encounter substantial economic environmental challenges their implementation. An increasingly attractive alternative is chemical upcycling, which can transform plastics value-added chemicals. This review systematically examines upcycling applicable major commercial plastics, including polyethylene terephthalate (PET), polyolefins, polystyrene (PS), polyvinyl chloride (PVC). We focus on key strategies such as solvolysis, catalytic pyrolysis, hydrocracking hydrogenolysis, along with some emerging approaches electrocatalysis photooxidation, aiming summarize trends plastics.

Language: Английский

Citations

0
Chemical Depolymerization of Polyethylene Terephthalate and Its Blends: Enhanced Strategies for Efficient Circularity DOI
Shun Zhang, Xuan Zhao, Xuehui Liu

et al.

Progress in Polymer Science, Journal Year: 2025, Volume and Issue: unknown, P. 101958 - 101958

Published: April 1, 2025

Language: Английский

Citations

0
Impact of Functionalized Titanium Oxide on Anion Exchange Membranes Derived from Chemically Modified PET Bottles DOI Creative Commons
Varun Donnakatte Neelalochana, Eleonora Tomasino, Marcelo Augusto Malagutti

et al.

Electrochimica Acta, Journal Year: 2024, Volume and Issue: unknown, P. 145170 - 145170

Published: Sept. 1, 2024

Language: Английский

Citations

2
Investigation into the Reinforcement Modification of Natural Plant Fibers and the Sustainable Development of Thermoplastic Natural Plant Fiber Composites DOI Open Access
Zhenhao Liao, Yunlong Hu, Yan Shen

et al.

Polymers, Journal Year: 2024, Volume and Issue: 16(24), P. 3568 - 3568

Published: Dec. 20, 2024

Natural plant fibers (NPFs) have emerged as a sustainable alternative in the manufacture of composites due to their renewability and low environmental impact. This has led significant increase use natural fiber-reinforced polymers (NPFRPs) variety industries. The diversity NPF types brings wide range properties functionalities NPFRPs, which turn highlights urgent need improve fiber materials order enhance performance suitability. paper provides insight into processing mechanisms behind treatments, exploring how these treatments affect mechanical, thermal NPFRPs. It also offers critical assessment advantages disadvantages physical, chemical, biological nanotechnological treatments. findings our analysis provide basis for development future that aim material thereby increasing competitiveness with conventional synthetic polymers. Finally, novel thermoplastic resin composite system, Elium–NPFRP, is proposed embodies principles green development. system been designed objective capitalizing on benefits NPFs while simultaneously addressing challenges associated integration polymer matrices. Elium–NPFRP not only exemplifies potential science, but practical solution can be implemented diverse applications, spanning automotive components construction materials. reduce carbon footprints promote circular economy.

Language: Английский

Citations

1
Chemical modification of rubber with in situ degradation of PET and the production of its biodegradable films with starch DOI

Pantoja-Cabrera Hideky,

Aurelio Ramírez‐Hernández, Ángel Marcos‐Fernández

et al.

Polymer Bulletin, Journal Year: 2024, Volume and Issue: unknown

Published: June 17, 2024

Language: Английский

Citations

0
Near-Infrared-Induced High-Performance Antimicrobial Active Coating for Medical Textiles Based on Easy-to-Synthesize Natural Catechin with Full End of Life Circularity DOI

Zeliha Ece Ozcelik,

Buket Alkan Taş,

Necdet Ozcelik

et al.

ACS Sustainable Chemistry & Engineering, Journal Year: 2024, Volume and Issue: 12(49), P. 17936 - 17951

Published: Nov. 26, 2024

The near-infrared (NIR)-induced antimicrobial textile (CTex) exhibits significant and antibiofilm activity over 4log reductions (more than 99.99% killing efficiency) against methicillin-resistant S. aureus (MRSA), aureus, E. coli, C. albicans within seconds under 808 nm NIR-laser irradiation by rapidly reaching almost 180 °C. A simple yet effective preparation method for an intensely active photothermal polymer backbone from the natural compound catechin is presented. NIR-responsive was synthesized using a step-growth polymerization reaction between trimesoyl chloride. Features of this polymer, reported here first time, were systematically optimized: conditions, chemical structure, thermal properties, capabilities. enhanced formulation integrated into commercially available laboratory coat dip-coating method. neat coated products evaluated morphological analyses, as well resistance to washing, reusability, conversion NIR light energy. On aspect sustainability, CTex amenable straightforward, cost-effective, industry-friendly green recycling, which also indicated. This circular end-of-life recycling demonstrated dry extrusion system, without need catalysts or solvents, depolymerize containing polyethylene terephthalate constituent monomer, terephthalic acid with high-yield (97.9%) outputs.

Language: Английский

Citations

0
Chemical Recycling of PET by catalyzed aminolysis and its application as a hardener for epoxy coating DOI Creative Commons

Mrunalini M. Padole,

Pawan N. Gawali,

Anagha S. Sabnis

et al.

Research Square (Research Square), Journal Year: 2024, Volume and Issue: unknown

Published: Oct. 22, 2024

Abstract Due to the widespread application of polymers, waste management is becoming elusive and a threat polymer industry, both manufacturing processing. One commonly used polyethylene terephthalate (PET), considered environmentally harmful due its substantial presence in streams resistance natural degradation. Chemical recycling most suitable solution for dealing with this, as polymers are recycled into their starting material various applications. Aminolysis PET offers an alternative approach that can be conducted under less stringent conditions, yielding valuable chemicals. In this work, we depolymerized oligomeric product using 4,7,10-trioxa-1,13-tridecanediamine aminolysis agent. The resulting oligomer, containing amine functionality, was investigated potential curing agent epoxy resin coating aminolyzed demonstrated enhanced performance, coatings superior thermal stability, mechanical strength, chemical compared traditional hardeners. These properties were rigorously tested validated according ASTM standards. Additionally, direct utilization obtained without filtration or separation provides cost-effective solution. Our findings highlight promising recycling, providing sustainable novel high-performance coatings.

Language: Английский

Citations

0