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Publication
Development of Composites of PLA Filled with Different Amounts of Rice Husk Fibers for Fused Deposition Modeling
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Advisor(s)
Abstract(s)
Polylactic acid (PLA) has been used as a matrix material to produce compo-
sites with natural fibers, which present several advantages, being one of
them the addition of value to agricultural waste. Thus, this study aims to
develop a PLA 3D filament with the incorporation of a waste agriculture
product (rice husk (RH)). For that, RH fibers were prepared, and PLA was
loaded up to 20% RH. The filaments were obtained by extrusion. Finally,
samples were produced by fused deposition modeling (FDM). The fibers and
filaments’ density and thermal stability (TGA) were determined, and their
chemical structure changes due to alkali treatment were accessed by Fourier
Transform Infrared Spectroscopy (FTIR). Printability tests were performed,
and printed samples were characterized in terms of density, water absorp-
tion, and mechanical behavior (compression, tensile, and flexural tests). The
results showed that the alkali treatment changed the chemical structure of
RH fibers and TGA showed that the filaments did not degrade significantly
until 250ºC. The best printability was achieved with 5% of HR content and
was the one that showed the lowest mechanical properties reduction.
Overall, the present work showed that RH fibers can be successfully used
as a filler in PLA filaments for FDM.
Description
Keywords
Citation
Pereira, D. F., Branco, A. C., Cláudio, R., Marques, A. C., & Figueiredo-Pina, C. (2023). Development of Composites of PLA Filled with Different Amounts of Rice Husk Fibers for Fused Deposition Modeling. Journal of Natural Fibers, 20(1)