Results 61 to 70 of about 1,864 (182)

Carbon fibre-reinforced polypropylene vitrimers for fused filament fabrication: Enhancing interlayer adhesion through transesterification-based dynamic covalent chemistry

eXPRESS Polymer Letters
Fused filament fabrication (FFF) notoriously suffers from weak interlayer adhesion, leading to anisotropic mechanical properties in the fabricated parts.
Kaja Kupnik, Jure Dobnik, Patricija Skrivarnik, Rebeka Lorber, Irena Pulko, Janez Slapnik   +5 more
doaj   +1 more source

Design principles for vitrimers: Linking dynamic covalent chemistry, network architecture, and engineering performance

Bulletin of the Korean Chemical Society, EarlyView.
This review examines vitrimer performance from a broader perspective, considering not only dynamic covalent chemistry but also molecular structure, network architecture, and rheological behavior. These factors are discussed in relation to service and processing windows, reprocessing, repair, and engineering applications, providing a multiscale ...
Kyosun Ku, Hyeonuk Yeo
wiley   +1 more source

Gold Nanospheres Dispersed Light Responsive Epoxy Vitrimers

, 2018
Vitrimers represent a new class of smart materials. They are covalently crosslinked like thermosets, yet they can be reprocessed like thermoplastics. The underlying mechanism is the rapid exchange reactions which form new bonds while breaking the old ...
Yan Ji, Zhenhua Wang, Zhen Li, Yen Wei
core   +1 more source

Theoretical Framework for Predicting Dynamic Covalent Exchange Based on Proton Affinities and Proton‐Transfer Assistance

Chemistry – A European Journal, EarlyView.
Proton‑transfer catalysis controls acylsemicarbazide dissociation, linking proton affinity to exchange kinetics and enabling predictive design of robust, tunable dynamic covalent networks. ABSTRACT We provide design principles for predicting bond exchange kinetics in acylsemicarbazide (ASC)‐based systems that can be applied to tuning the properties of ...
Siebe Lekanne Deprez, Stefan J. D. Maessen, Angelina N. van Dam, Celine Nieuwland, Pascal Vermeeren, Anja R. A. Palmans, Célia Fonseca Guerra   +6 more
wiley   +1 more source

Strength Retention of Carbon Fiber/Epoxy Vitrimer Composite Material for Primary Structures: Towards Recyclable and Reusable Carbon Fiber Composites

Applied Mechanics
Recently, the growth of the recyclability of carbon fiber reinforced polymer (CFRP) composites has been driven by environmental and circular economic aspects.
Sudhanshu Nartam, Vishal Rautela, Sandip Budhe, Jinu Paul, Silvio de Barros   +4 more
doaj   +1 more source

Vitrimerization: A Novel Concept to Reprocess and Recycle Thermoset Waste via Dynamic Chemistry

Global Challenges, 2019
A new approach for reprocessing of existing thermoset waste is presented. This work demonstrates that unrecyclable thermoset materials can be reprocessed using the concept of associative dynamic bonding, vitrimers.
Liang Yue, Vahab Solouki Bonab, Dian Yuan, Ammar Patel, Vahid Karimkhani, Ica Manas‐Zloczower   +5 more
doaj   +1 more source

Biobased Epoxidized Castor Oil Covalent Adaptable Networks Adhesives Reinforced with Recycled Carbon Fibers

Macromolecular Rapid Communications, EarlyView.
It is reported the design of biobased sustainable, smart, and functional adhesives achieved dispersing recycled carbon fibers into biobased epoxy monomer. ABSTRACT The development of sustainable, smart, and functional adhesives is crucial in advancing environmentally friendly materials.
Alberto Cellai, Rafael Turra Alarcon, Bernhard Sölle, Elisabeth Rossegger, Valentina Casalegno, Milena Salvo, Marco Sangermano   +6 more
wiley   +1 more source

Model Polyisoprene Vitrimers

Vitrimers are an important class of cross-linked polymers that behave as conventional thermosets at low temperatures and exhibit viscoelastic liquid behavior at high temperatures. The currently available vitrimers are far to be well-defined.
Nikolaos Patelis (8043899), Katerina Peponaki (8827772), Konstantinos Ntetsikas (1512733), Saibal Bhaumik (9155277), Dimitris Vlassopoulos (1401058), Nikos Hadjichristidis (1462444)   +5 more
core   +1 more source

Polycarbonate Vitrimers and Dynamic Co‐Networks From Epoxide/Carbon Dioxide Copolymerization

Macromolecular Rapid Communications, EarlyView.
This work demonstrates how CO2‐derived poly(propylene carbonate) and poly(cyclohexene carbonate) backbones influence vitrimer thermo‐mechanical behavior. By tuning backbone composition, epoxide crosslinker chemistry and blend ratios, the crosslinked materials span a wide property window, from highly extensible to stiff, glassy networks, establishing an
Satej S. Joshi, Sophia Aracri, Mark D. Foster, James M. Eagan   +3 more
wiley   +1 more source

Polymeric Polyaldehyde Approach to Develop Robust Dynamic Covalent Adaptive Polyimine Networks

Macromolecular Rapid Communications, EarlyView.
A versatile approach exploring the synthesis of polymeric polyaldehydes with a polyacrylate backbone bearing pendant aldehyde groups to develop dynamic polyacrylate‐polyimine hybrid materials capable of the built‐in ability for extended operation and enhanced reliability. ABSTRACT Polyimine‐based covalent adaptive networks crosslinked with Schiff bases
Subrata Dolui, Sofia Nieves Casillas‐Popova, Seung Ki Lee, Sun Ju Kim, Hira Rasheed, Zhibin Ye, Minsoo P. Kim, Hyun Wook Jung, Jung Kwon Oh   +8 more
wiley   +1 more source