Additive manufacturing of continuous regenerated cellulose fiber reinforced polylactic acid composites using in-situ impregnation material extrusion technique
This study explores an innovative approach to additively manufacture 100 % bio-derived, biodegradable polylactic acid (PLA) reinforced with continuous regenerated cellulose fibres (RCFs) using an in-situ infiltration material extrusion technique. The impact of fiber crystallinity, surface properties...
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| Main Authors: | , , , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Elsevier
2025-07-01
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| Series: | Composites Part C: Open Access |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2666682025000386 |
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| Summary: | This study explores an innovative approach to additively manufacture 100 % bio-derived, biodegradable polylactic acid (PLA) reinforced with continuous regenerated cellulose fibres (RCFs) using an in-situ infiltration material extrusion technique. The impact of fiber crystallinity, surface properties, cross-sectional geometry and PLA's thermal and rheological behaviour is analysed. Single fiber pull-out test (SFPT) is utilised to evaluate fibre-matrix interactions, while tensile and flexural properties are assessed in conjunction with void analysis via optical and AFM micrographs. The results show that Biomid fibres, which exhibit ∼65 % crystallinity, demonstrate ∼31 % higher apparent interfacial shear strength (IFSS) compared to Cordenka fibres, which exhibit ∼42 % crystallinity. Furthermore, Biomid-PLA composites show a substantial increase in tensile strength, reaching ∼290 % higher and tensile modulus reaching ∼470 % higher than unreinforced PLA. In addition, the flexural strength and modulus of the Biomid-PLA composite increased by ∼71 % and ∼120 %, compared to unreinforced PLA. |
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| ISSN: | 2666-6820 |