Results 81 to 90 of about 1,685 (166)

Furan-derived Schiff base covalent adaptable thermosets with recyclability and anti-flammability

Green Chemical Engineering
Conventional thermosetting polymers, mostly derived from nonrenewable petroleum resources, are not reprocessable and recyclable due to their highly cross-linked three-dimensional networks and face the disadvantage of high flammability.
Ping Zhang, Shuyu Jia, Ruishi Xie, Lin Chen, Ying Xiong   +4 more
doaj   +1 more source

Bioinspired Self-Healing Vitrimer from Epoxidised Palm Oil Reinforced with Nanofibrillated Cellulose and Activated Carbon

BioResources
A vitrimer composite based on epoxidised palm oil (EPO) was reinforced with nanofibrillated cellulose (NFC) and palm kernel shell (PKS)-derived activated carbon as complementary bio-based fillers.
Chuan Li Lee, Balkis Fatomer A. Bakar, Kit Ling Chin, Luqman Chuah Abdullah, Xian Foong Lee, Qi Yong Wong   +5 more
doaj  

Hydrolyzable Bio‐Based Bisphenols Enabled by the Tishchenko Reaction for Polyurethane Vitrimers with Closed‐Loop Recyclability

Advanced Science
Polyurethane (PU) is a cornerstone of modern materials science, yet its reliance on petroleum‐based precursors and the limited recyclability of conventional formulations pose significant environmental challenges.
Jiewen Wang, Hongru Qiang, Rong Huang, Dan Zhao, Zihan Tong, Zhen Fan, Jianzhong Du, Yunqing Zhu   +7 more
doaj   +1 more source

Self‐healing Coatings Based on Epoxy Vitrimers

Macromolecular Materials and Engineering
The present study focuses on the development of epoxy‐based vitrimeric coatings with thermal‐healing ability. For this purpose, ethylene glycol diglycidyl ether (EG) is crosslinked with methyl nadic anhydride (MNA) in the presence of 1‐methylimidazole (1‐
Angela Marotta, Fabio Scherillo, Giovanni Filippone, Martina Salzano de Luna, Veronica Ambrogi   +4 more
doaj   +1 more source

Closed-Loop Recyclable, Self-Catalytic Transesterification Vitrimer Coatings with Superior Adhesive Strength, Fire Retardancy, and Environmental Stability

The nondegradability, nonreusability, and flammability of epoxy coatings have brought serious environmental and safety issues. Herein, a multifunctional, fire-retardant epoxy vitrimer coating (DCNC/45PETO) was prepared via curing bis(2,3-epoxypropyl ...
Zhang, Qi, Ye, Guofeng, Wang, Cheng, Liu, Zhitian, Wang, Hao, Huo, Siqi   +5 more
core   +1 more source

Rasterized Infrared Curing of Aromatic Polyester Vitrimers for Additive Manufacturing and Thin Films Enabled by Dynamic Bond Exchange

Macromolecular Materials and Engineering
This work presents a rasterized infrared (IR) curing method for Aromatic Thermosetting Copolyester (ATSP) vitrimers driven by dynamic polymer network evolution. ATSP is formed from paired oligomer precursors with acetoxy and carboxyl end groups.
Louis O. Vaught, Ryan N. Smith, Andreas A. Polycarpou   +2 more
doaj   +1 more source

Converting Unrefined Birch Suberin Monomers into Vitrimer

Suberin extracted from birch bark, a side product of the wood industry, was used as a resin for the synthesis of a biobased vitrimer utilizing the transesterification reaction.
Cezary Makarewicz (11519516), Mateusz Gosecki (2910719), Monika Gosecka (1607017), Malgorzata Urbaniak (8662434)   +3 more
core   +1 more source

Rapid repair and degradation: A study of high-performance recyclable vitrimer epoxy resin based on disulfide bonds

Polymer Testing
Petroleum-based epoxy resin is commonly used in electrical equipment due to its outstanding performance and affordability. However, its non-melting characteristics present challenges for recycling, leading to significant resource waste and environmental ...
Hechen Liu, Chang Liu, Yunpeng Liu, Yuzhe Jiang, Xinyang Li, Yining Bai   +5 more
doaj   +1 more source

Exploring Self‐Repair Capabilities of ATSP Vitrimers for Crack Mitigation in Aerospace Applications

Macromolecular Materials and Engineering
Vitrimers, although categorized as thermosetting polymers, differ from traditional ones in that their thermally induced crosslinks undergo reconfiguration through covalent bond exchanges in response to thermal stimuli.
Ajinkya Raut, Jacob L. Meyer, Mohammad Naraghi, Andreas A. Polycarpou   +3 more
doaj   +1 more source

Scalable Chemical Recycling of Disulfide-Based Epoxy Vitrimer Composites

Chemical recycling of disulfide-based vitrimer carbon fiber composites offers a viable route for circular management of structural composite materials through recovery of both reinforcement fibers and matrix constituents.
Amaia Llorente, Elena Jubete, Alaitz Rekondo, Hans-Jürgen Grande, Paula Fanlo   +4 more
core   +1 more source