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Published on: February 11, 2016
Thermoplastic Processing of PLA/Cellulose Nanomaterials Composites
T C Mokhena1,2, J S Sefadi3, E R Sadiku4
1Department of Chemistry, Nelson Mandela University, Port Elizabeth 6031, South Africa. mokhenateboho@gmail.com.
Polylactic acid (PLA) composites reinforced with cellulose nanomaterials like cellulose nanocrystals (CNC) and nanofibers (CNF) offer sustainable alternatives to petroleum-based polymers. This review explores manufacturing techniques to enhance PLA
Area of Science:
- Polymer Science
- Materials Science
- Nanotechnology
Background:
- Polylactic acid (PLA) is a renewable, biodegradable polymer with potential to replace petroleum-based plastics.
- PLA exhibits good mechanical properties but has limitations in thermal resistance and crystallization rate.
- Cellulose nanomaterials, including cellulose nanocrystals (CNC) and nanofibers (CNF), are eco-friendly fillers with high strength and stiffness.
Purpose of the Study:
- To review critical factors in manufacturing polylactic acid (PLA) composites using cellulose nanomaterials (CNC and CNF).
- To discuss recent advances in dispersing cellulosic nanomaterials within PLA matrices.
- To compare the properties of PLA reinforced with CNC versus CNF.
Main Methods:
- Review of conventional processing techniques for PLA-cellulosic nanomaterial composites, including melt extrusion, melt-spinning, and compression molding.
- Analysis of methods to improve the dispersion of cellulose nanomaterials in PLA.
- Comparative study of morphology, mechanical behavior, and thermal properties of CNC- and CNF-reinforced PLA.
Main Results:
- Conventional techniques can produce PLA-cellulosic nanomaterial composites.
- Improved dispersion of CNC and CNF is crucial for enhancing composite properties.
- Both CNC and CNF can significantly improve the mechanical and thermal properties of PLA.
Conclusions:
- PLA reinforced with cellulose nanomaterials presents a promising sustainable alternative for advanced applications.
- Optimizing dispersion techniques is key to unlocking the full potential of these composites.
- Further research into manufacturing processes will drive the adoption of these eco-friendly materials.
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