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Synthesis, Characterization and Applications of Vitrimers

A special issue of Molecules (ISSN 1420-3049). This special issue belongs to the section "Materials Chemistry".

Deadline for manuscript submissions: 31 July 2026 | Viewed by 770

Special Issue Editors


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Guest Editor
Department of Applied Science and Technology, Politecnico di Torino, I-10129 Torino, Italy
Interests: hybrid O/I systems; sol–gel processes; biomacromolecules; biopolymers; flame retardance; structure–property–processing relationships; thermal degradation; polymer (nano)composites
Special Issues, Collections and Topics in MDPI journals

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Guest Editor
Department of Chemical, Physical, Mathematical, and Natural Sciences, University of Sassari, I-07100 Sassari, Italy
Interests: frontal polymerization; smart polymers; polymer (nano)composites; transparent wood; biobased polymer materials
Special Issues, Collections and Topics in MDPI journals

E-Mail Website
Guest Editor
Department of Chemical, Physical, Mathematical, and Natural Sciences, University of Sassari, I-07100 Sassari, Italy
Interests: hydrogels; frontal polymerization; polymer (nano)composites; smart polymers; polymer synthesis; polymer characterization; biopolymers; (semi)interpenetrated polymer networks

Special Issue Information

Dear Colleagues,

To fulfill the concept of the circular economy, academic and industrial communities are devoting significant efforts to the end-of-life of plastic materials. Unlike thermoplastics, which are easily recovered and revalued, recycling thermosets remains a challenging issue. On the other hand, due to their network structure, thermosetting polymer systems have unique properties that make them ideal for applications requiring high mechanical strength, chemical inertness, and thermal stability. Recently, vitrimers have attracted the attention of the scientific community as they are characterized by dynamic covalent adaptive networks that provide the typical properties of thermosets while retaining the ability to be processed (and, therefore, mechanically recycled) beyond a threshold temperature.

The focus of this Special Issue is the latest research on the design, synthesis, characterization, and applications of vitrimers. We welcome original research articles, reviews, and focus papers with the aim of collecting the latest insights and results on new vitrimeric systems, their synthetic pathways, and their unique properties.

Prof. Dr. Giulio Malucelli
Prof. Dr. Alberto Mariani
Dr. Daniele Nuvoli
Guest Editors

Manuscript Submission Information

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Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2700 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • vitrimers
  • covalent adaptive networks
  • dynamic exchangeable linkages
  • recyclability
  • reshapeability
  • self-healing

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Published Papers (1 paper)

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Research

26 pages, 2747 KB  
Article
Eugenol-Based Epoxy Vitrimers: Caffeine and Zinc Acetate as Potential Alternative Catalysts in Curing Kinetics and Dynamic Network Properties
by Angela Y. Becerra-Lovera, Javier Mauricio Anaya-Mancipe, Rubén D. Díaz-Martin, Marcos Lopes Dias and Diego de Holanda Saboya Souza
Molecules 2026, 31(5), 783; https://doi.org/10.3390/molecules31050783 - 26 Feb 2026
Viewed by 433
Abstract
The development of sustainable vitrimers from bio-based sources addresses the need for high-performance recyclable materials. This research describes eugenol-derived epoxy vitrimers cross-linked with adipic acid as a curing agent, focusing on comparative effects of caffeine and zinc acetate as transesterification catalysts at 5 [...] Read more.
The development of sustainable vitrimers from bio-based sources addresses the need for high-performance recyclable materials. This research describes eugenol-derived epoxy vitrimers cross-linked with adipic acid as a curing agent, focusing on comparative effects of caffeine and zinc acetate as transesterification catalysts at 5 and 10% concentrations versus a non-catalyzed control. Both catalysts acted as curing accelerators, confirmed by FTIR and DSC analyses, revealing polyhydroxyester network formation through associative ester exchange enabling topological reorganization. Zinc acetate at 10% proved most efficient, achieving the lowest apparent activation energy (116.0 kJ/mol), highest crosslinking density (νe = 3.42 × 10−3 mol/cm3), improved thermal stability with unimodal degradation profile, and substantially reduced topology freezing transition temperature (Tv = 132 °C), confirming enhanced dynamic properties. Caffeine demonstrated catalytic activity, reducing apparent activation energy to 124.4 kJ/mol at 10% and promoting rapid epoxide conversion during initial curing at moderate temperatures. Although its catalytic efficiency is moderate compared to zinc acetate, its bio-based origin and non-toxic nature make it a promising green alternative for sustainable vitrimer applications. Results demonstrate that catalyst selection is crucial for tailoring curing kinetics, network structure, and final vitrimeric properties, providing key guidelines for designing advanced circular materials from bio-based precursors. Full article
(This article belongs to the Special Issue Synthesis, Characterization and Applications of Vitrimers)
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