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Fully Biodegradable Composites: Thermal, Flammability, Moisture Absorption and Mechanical Properties of Natural Fibre-Reinforced Composites with Nano-Hydroxyapatite
- Source :
- Materials, Volume 12, Issue 7, Materials, Vol 12, Iss 7, p 1145 (2019)
- Publication Year :
- 2019
- Publisher :
- Multidisciplinary Digital Publishing Institute, 2019.
-
Abstract
- Natural fibre-reinforced poly(lactic acid) (PLA) laminates were prepared by a conventional film stacking method from PLA films and natural fabrics with a cross ply layup of [0/90/0/90/0/90], followed by hot compression. Natural fibre (NF) nano-hydroxyapatite (nHA) filled composites were produced by the same manufacturing technique with matrix films that had varying concentrations of nHA in the PLA. Their flammability, thermal, moisture absorption and mechanical properties were analysed in terms of the amount of nHA. The flame behavior of neat PLA and composites evaluated by the UL-94 test demonstrated that only the composite containing the highest quantity of nHA (i.e., 40 wt% nHA in matrix) was found to achieve an FH-1 rating and exhibited no recorded burn rate, whereas other composites obtained only an FH-3. The thermal degradation temperature and mass residue were also observed, via thermogravimetric analysis, to increase when increasing concentrations of nHA were added to the NF composite. The tensile strength, tensile modulus and flexural modulus of the neat resin were found to increase significantly with the introduction of flax fibre. Conversely, moisture absorption was found to increase and mechanical properties to decrease with both the presence of NF and increasing concentrations of nHA, and subsequent mechanical properties experienced an obvious reduction.
- Subjects :
- Thermogravimetric analysis
natural fibre (NF)
Materials science
Composite number
flammability
Young's modulus
02 engineering and technology
mechanical properties
010402 general chemistry
01 natural sciences
lcsh:Technology
Article
symbols.namesake
poly(lactic acid) (PLA)
Ultimate tensile strength
Thermal
General Materials Science
Composite material
lcsh:Microscopy
Flammability
lcsh:QC120-168.85
Moisture absorption
lcsh:QH201-278.5
Flexural modulus
lcsh:T
021001 nanoscience & nanotechnology
0104 chemical sciences
lcsh:TA1-2040
symbols
lcsh:Descriptive and experimental mechanics
lcsh:Electrical engineering. Electronics. Nuclear engineering
0210 nano-technology
lcsh:Engineering (General). Civil engineering (General)
lcsh:TK1-9971
nano-hydroxyapatite (nHA)
Subjects
Details
- Language :
- English
- ISSN :
- 19961944
- Database :
- OpenAIRE
- Journal :
- Materials
- Accession number :
- edsair.doi.dedup.....cf579232e884022fb80b11f5cc4cb05c
- Full Text :
- https://doi.org/10.3390/ma12071145