Nonlinear dynamic mechanical and impact performance assessment of epoxy and microcrystalline cellulose-reinforced epoxy
File(s)
Published version
Author(s)
Tufekci, Mertol
Type
Journal Article
Abstract
This study focusses on imrpoving the mechanical performance of epoxy resin by reinforcing it with microcrystalline cellulose (MCC). Epoxy composites with varying MCC mass fractions (0.5%, 1%, 1.5%, and 2%) are prepared and characterised to assess the influence of MCC on strain-rate-dependent flexural properties, impact resistance, and nonlinear viscoelastic behaviour. Three-point bending tests at different strain rates reveal that MCC notably increases the flexural strength and leads to nonlinear mechanical behaviour. It is shown that stiffness, strength and elongation at break increase with rising MCC content. Charpy impact tests show improved energy absorption and toughness, while Dynamic Mechanical Analysis (DMA) demonstrates that the materials prepared exhibit increased storage modulus and improved damping across a frequency range. These results indicate that MCC serves as an effective bio-based reinforcement, significantly boosting the strength and toughness of epoxy composites. The findings contribute to the development of sustainable, high-performance materials for advanced engineering applications.
Date Issued
2024-12-01
Date Acceptance
2024-11-22
Citation
Polymers, 2024, 16 (23)
ISSN
2073-4360
Publisher
MDPI AG
Journal / Book Title
Polymers
Volume
16
Issue
23
Copyright Statement
© 2024 by the author. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https:// creativecommons.org/licenses/by/ 4.0/).
License URL
Identifier
https://www.ncbi.nlm.nih.gov/pubmed/39684029
PII: polym16233284
Subjects
BEHAVIOR
Charpy impact performance
COMPOSITES
dynamic mechanical analysis (DMA)
epoxy resin
flexural properties
microcrystalline cellulose (MCC)
NANOCRYSTALS
Physical Sciences
Polymer Science
Science & Technology
Publication Status
Published
Coverage Spatial
Switzerland
Article Number
3284
Date Publish Online
2024-11-25