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Creep Behavior of Poly(lactic acid) Based Biocomposites
Marco Morreale1, Maria Chiara Mistretta2, Vincenzo Fiore3
1Faculty of Engineering and Architecture, Kore University of Enna, Enna 94100, Italy. marco.morreale@unikore.it.
Materials (Basel, Switzerland)
|August 5, 2017
Summary
This study investigated the tensile creep of natural fiber composites. Results show temperature and fabric type significantly impact creep behavior in polylactic acid (PLA) composites.
Area of Science:
- Materials Science
- Polymer Science
- Composite Materials
Background:
- Natural fiber composites are gaining traction as sustainable alternatives to synthetic fiber composites.
- Biodegradable matrices from renewable sources are increasingly used, but their creep behavior is not well-documented.
- Understanding creep is crucial for the long-term performance and application of these advanced materials.
Purpose of the Study:
- To investigate the tensile creep behavior of polylactic acid (PLA) based composites reinforced with flax and jute woven fabrics.
- To evaluate the influence of temperature and fabric type on the creep performance of these natural fiber composites.
- To assess the mechanical behavior of the constituent fabrics and their contribution to composite performance.
Main Methods:
- Tensile creep tests were conducted on PLA/flax and PLA/jute composites at 40 °C and 60 °C.
- Quasi-static tensile tests and dynamic mechanical analysis were performed for preliminary characterization.
- Fabric samples (flax and jute) were also subjected to quasi-static and creep tests.
Main Results:
- Creep behavior of the PLA composites was significantly influenced by testing temperature and the type of woven fabric used.
- Morphological analysis revealed superior fiber-matrix adhesion between PLA and jute fabric compared to flax.
- The mechanical properties of the individual fabrics influenced the overall composite response.
Conclusions:
- Temperature and fabric choice are critical factors governing the creep performance of PLA-based natural fiber composites.
- Jute fabric exhibits better interfacial adhesion with PLA, suggesting potential for enhanced composite durability.
- Further research into optimizing fabric-matrix interactions is recommended for developing high-performance sustainable composites.
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