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Journal article
Engineering Toughness in a Brittle Vinyl Ester Resin Using Urethane Acrylate for Additive Manufacturing
Polymers, v 15(17), p3501
22 Aug 2023
Featured in Collection : UN Sustainable Development Goals @ Drexel
Abstract
Thermosetting polymers tend to have a stiffness–toughness trade-off due to the opposing relationship of stiffness and toughness on crosslink density. We hypothesize that engineering the polymer network, e.g., by incorporating urethane oligomers, we can improve the toughness by introducing variations in crosslink density. In this work, we show that a brittle methacrylated Bis-GMA resin (known as DA2) is toughened by adding a commercial urethane acrylate resin (known as Tenacious) in different proportions. The formulations are 3D printed using a vat photopolymerization technique, and their mechanical, thermal, and fracture properties are investigated. Our results show that a significant amount of Tenacious 60% w/w is required to produce parts with improved toughness. However, mechanical properties drop when the Tenacious amount is higher than 60% w/w. Overall, our results show that optimizing the amount of urethane acrylate can improve toughness without significantly sacrificing mechanical properties. In fact, the results show that synergistic effects in modulus and strength exist at specific blend concentrations.
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Details
- Title
- Engineering Toughness in a Brittle Vinyl Ester Resin Using Urethane Acrylate for Additive Manufacturing
- Creators
- Mohanad Idrees - Drexel UniversityHeedong Yoon - Drexel UniversityGiuseppe R. Palmese - Drexel UniversityNicolas J. Alvarez - Drexel University
- Publication Details
- Polymers, v 15(17), p3501
- Publisher
- MDPI
- Resource Type
- Journal article
- Language
- English
- Academic Unit
- Chemical and Biological Engineering
- Web of Science ID
- WOS:001062159300001
- Scopus ID
- 2-s2.0-85170357522
- Other Identifier
- 991021059945604721
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Data related to this publication, from InCites Benchmarking & Analytics tool:
- Web of Science research areas
- Polymer Science