Processing and characterization of epoxy composites reinforced with short human hair

Nanda, Bishnu Prasad; Satapathy, Alok

doi:10.1088/1757-899x/178/1/012012

Cited by 21 publications

(3 citation statements)

References 6 publications

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“…The actual density, theoretical density, and void volume (%) of PLA/PCL/nHA biocomposites were determined using studies by Satapathy et al (2017) [ 44 ] and Taib et al (2018) [ 45 ]. Flexural tests on PLA/PCL/nHA biocomposites were carried out based on the American Society for Testing and Materials (ASTM) number D790-17 to assess flexural strength.…”

Section: Methodsmentioning

confidence: 99%

Characterization of PLA/PCL/Nano-Hydroxyapatite (nHA) Biocomposites Prepared via Cold Isostatic Pressing

et al. 2023

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Hydroxyapatite has the closest chemical composition to human bone. Despite this, the use of nano-hydroxyapatite (nHA) to produce biocomposite scaffolds from a mixture of polylactic acid (PLA) and polycaprolactone (PCL) using cold isostatic pressing has not been studied intensively. In this study, biocomposites were created employing nHA as an osteoconductive filler and a polymeric blend of PLA and PCL as a polymer matrix for prospective usage in the medical field. Cold isostatic pressing and subsequent sintering were used to create composites with different nHA concentrations that ranged from 0 to 30 weight percent. Using physical and mechanical characterization techniques such as Fourier transform infrared spectroscopy (FTIR), X-ray diffraction (XRD), scanning electron microscopy (SEM), and density, porosity, tensile, and flexural standard tests, it was determined how the nHA concentrations affected the biocomposite’s general properties. In this study, the presence of PLA, PCL, and nHA was well identified using FTIR, XRD, and SEM methods. The biocomposites with high nHA content showed intense bands for symmetric stretching and the asymmetric bending vibration of PO43−. The incorporation of nHA into the polymeric blend matrix resulted in a rather irregular structure and the crystallization became more difficult. The addition of nHA improved the density and tensile and flexural strength of the PLA/PCL matrix (0% nHA). However, with increasing nHA content, the PLA/PCL/nHA biocomposites became more porous. In addition, the density, flexural strength, and tensile strength of the PLA/PCL/nHA biocomposites decreased with increasing nHA concentration. The PLA/PCL/nHA biocomposites with 10% nHA had the highest mechanical properties with a density of 1.39 g/cm3, a porosity of 1.93%, a flexural strength of 55.35 MPa, and a tensile strength of 30.68 MPa.

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Section: Methodsmentioning

confidence: 99%

Characterization of PLA/PCL/Nano-Hydroxyapatite (nHA) Biocomposites Prepared via Cold Isostatic Pressing

et al. 2023

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“…The mass of the PLA/PCL blend was identified using an analytical balance. The determination of the actual density, theoretical density, and void volume fraction of the biocomposites was based on studies conducted by Taib et al (2018) [ 38 ] and Satapathy et al (2017) [ 39 ].…”

Section: Methodsmentioning

confidence: 99%

Investigating the Effect of PCL Concentrations on the Characterization of PLA Polymeric Blends for Biomaterial Applications

et al. 2022

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Polylactic acid (PLA) and polycaprolactone (PCL) are synthetic polymers that are extensively used in biomedical applications. However, the PLA/PCL blend produced by ball milling, followed by pressure compaction and sintering, has not been extensively explored. The goal of this research is to investigate the effect of the composition of biomaterials derived from PLA and PCL prepared by ball milling, followed by pressure compaction and sintering, on mechanical and physical properties. PCL and PLA with various concentrations were blended utilizing a ball milling machine for 2 h at an 80-rpm rotation speed. The obtained mixture was placed in a stainless steel 304 mold for the compacting process, which uses a pressure of 30 MPa to create a green body. The sintering procedure was carried out on the green body created at 150 °C for 2 h using a digital oven. The obtained PLA/PCL blend was tested using Fourier transform infrared spectroscopy (FTIR), X-ray diffraction (XRD), Scanning electron microscopy (SEM), density, porosity, and three-point bending. Following the interaction between PCL and PLA in the PLA/PCL blend, the FTIR spectra and XRD diffractograms obtained in this work revealed a number of modifications in the functional groups and crystal phase. The 90PLA specimen had the best mechanical properties, with a maximum force and displacement of 51.13 N and 7.21 mm, respectively. The porosity of the PLA/PCL blend decreased with increasing PLA concentration so that the density and flexural properties of the PLA/PCL blend increased. The higher PCL content decreased the stiffness of the PLA molecular chain, consequently reducing its flexural properties.

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“…Results indicated that treated and untreated composites have the same value of density and the average value of density is 1.013 g cm −3 . Minute differences in density value can be attributed to the presence of voids or trapped air [53]. Table 2 shows density values of treated and untreated fibres composites.…”

Section: Resultsmentioning

confidence: 99%

Improved mechanical and water absorption properties of epoxy-bamboo long natural fibres composites by eco-friendly Na₂CO₃treatment

Karim

Tahir

Khan

et al. 2022

Plastics, Rubber and Composites

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Epoxy-bamboo long natural fibres composites were prepared by hand lay-up method to study the influence of fibre's treatment on their characteristics. SEM showed increased surface roughness due to the removal of amorphous compounds from the treated fibre as confirmed by the disappearance of certain peaks in FTIR spectroscopy. Resultantly, ∼52% increase in crystallinity was observed by XRD analysis. TGA results also showed the effectiveness of the treatment as mass loss for treated fibres was ∼15% lesser than the untreated fibres. Moreover, thermogravimetric analysis of composites showed highest mass loss in untreated fibres composites and lowest in neat epoxy. The DSC-DTA curves indicated an early start of initiation temperature in treated fibre composite. Tension tests showed ∼12% and ~16% increase in tensile strength and modulus respectively for treated fibres composite due to increased interfacial strength caused by fibre treatment. Treatment also resulted in decreased impact energy and water absorption level.

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Processing and characterization of epoxy composites reinforced with short human hair

Cited by 21 publications

References 6 publications

Characterization of PLA/PCL/Nano-Hydroxyapatite (nHA) Biocomposites Prepared via Cold Isostatic Pressing

Characterization of PLA/PCL/Nano-Hydroxyapatite (nHA) Biocomposites Prepared via Cold Isostatic Pressing

Investigating the Effect of PCL Concentrations on the Characterization of PLA Polymeric Blends for Biomaterial Applications

Improved mechanical and water absorption properties of epoxy-bamboo long natural fibres composites by eco-friendly Na₂CO₃treatment

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Processing and characterization of epoxy composites reinforced with short human hair

Cited by 21 publications

References 6 publications

Characterization of PLA/PCL/Nano-Hydroxyapatite (nHA) Biocomposites Prepared via Cold Isostatic Pressing

Characterization of PLA/PCL/Nano-Hydroxyapatite (nHA) Biocomposites Prepared via Cold Isostatic Pressing

Investigating the Effect of PCL Concentrations on the Characterization of PLA Polymeric Blends for Biomaterial Applications

Improved mechanical and water absorption properties of epoxy-bamboo long natural fibres composites by eco-friendly Na2CO3treatment

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Improved mechanical and water absorption properties of epoxy-bamboo long natural fibres composites by eco-friendly Na₂CO₃treatment