Synthesis and characterization of new composite materials based on poly(methacrylic acid) and hydroxyapatite with applications in dentistry

Cucuruz, Andreia; Andronescu, Ecaterina; Ficai, Anton; Ilie, Andreia; Iordache, Florin

doi:10.1016/j.ijpharm.2016.01.061

Cited by 33 publications

(11 citation statements)

References 19 publications

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“…Hydroxyapatite (HA) is the main calcium phosphate phase in bone , which possesses highly desirable biocompatible, nontoxic, osteoconductive, noninflammatory, bioactive as well as nonimmunogenic properties. These properties make it a suitable candidate for proper osteointegration .…”

Section: Introductionmentioning

confidence: 99%

Characterization and Elemental Quantification of Natural Hydroxyapatite Produced from Cow Bone

et al. 2019

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The demand for hydroxyapatite (HA) is increasing annually due to the growing number of orthopedic patients, but it is a challenge to meet this growing demand without interfering with the integrity of the environment. Here, natural HA was produced from cow bone through ultrasound treatment followed by a calcination process at various temperatures. Characterization of the produced HA was performed by techniques such as thermogravimetric analysis, field emission scanning electron microscopy, Fourier transform infrared spectroscopy, and X-ray diffraction analysis. The elemental composition of the HA was quantified through X-ray photoelectron spectroscopy, energy dispersive X-ray spectroscopy, X-ray fluorescence, as well as carbon, hydrogen, nitrogen, sulfur (CHNS) analysis. The results demonstrate that pure HA was produced after calcination at 950°C, corresponding to pure HA phase.

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Section: Introductionmentioning

confidence: 99%

Characterization and Elemental Quantification of Natural Hydroxyapatite Produced from Cow Bone

et al. 2019

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“…As compared to the control, the tensile properties decreased with the inclusion of nHA due to fibre pull-out and fibre debonding. The reduction was substantial upon the addition of 30 wt% and 40 wt% nHA in the matrix, which can be attributed to the low strength of nHA as revealed previously [26,31]. Its low strength can be associated with the elimination of organic compounds during synthesis [15].…”

Section: Resultsmentioning

confidence: 59%

“…Amongst the composites, the T d improved with the addition of nHA relative to that of the Control and revealed nearly the same value as neat PLA. It was reported that electrostatic attraction between the polymeric carboxylate group and CA 2+ of nHA ions affect the interfacial bonding in composites containing nHA [26]. The maximum rates of thermal degradation (Figure 2) were measured 2.88, 1.94, 1.91, 1.7 and 1.67 %/°C for PLA, CPLA, CN20, CN30 and CN40, respectively, suggesting that both the natural fibre and nHA contributed to the reduction in the decomposition rate.…”

Section: Resultsmentioning

confidence: 99%

Fully Biodegradable Composites: Thermal, Flammability, Moisture Absorption and Mechanical Properties of Natural Fibre-Reinforced Composites with Nano-Hydroxyapatite

et al. 2019

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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.

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“…Additionally, with respect to the 1% n-HAP, the tensile strength of the 5 wt% n-HAP decreased by 15.0216%. This decrease can be associated with the low strength of n-HAP as reported in the literature [23], possibly due to the elimination of organic components during extraction. Similarly, it was stated in the literature that the mechanical properties of PLA/HAP nanobiocomposites are greatly dependent on the dispersion of n-HAP into the PLA matrix [24].…”

Section: Fig 2 -Tensile Strength Of Neat Pla and Pla/n-hap-900 Nanobmentioning

confidence: 62%

Physicomechanical Properties of Nanobiocomposite Composed of Polylactic Acid and Biogenic Nano hydroxyapatite

Bano

Basri

Jikan

et al. 2019

IJIE

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In the current paper, nanobiocomposite consisting of polylactic acid (biodegradable) (PLA) and nanohydroxyapatite (bioactive) (n-HAP) extracted from bovine bone was fabricated through melt mixing and injection moulding technique for biomedical applications. Partially biogenic nanohydroxyapatite was obtained from bovine bone by hydrothermal method and calcination treatment without using of any chemicals/solvents. Physicomechanical properties of neat-PLA and PLA/n-HAP nanobiocomposite were evaluated using X-ray diffraction (XRD), universal testing machine (UTM) and scanning electron microscopy (SEM). XRD result showed that the intensity of n-HAP peaks increased in the nanobiocomposite as n-HAP-900 loading increased. Tensile strength decreased with increasing the n-HAP-900 loading from 56.78 to 48.25 MPa due to poor interfacial adhesion between neat-PLA and n-HAP. PLA/n-HAP with 1% loading exhibits tensile strength potential for bone implant application and can be promising biomedical materials for orthopedic applications.

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Synthesis and characterization of new composite materials based on poly(methacrylic acid) and hydroxyapatite with applications in dentistry

Cited by 33 publications

References 19 publications

Characterization and Elemental Quantification of Natural Hydroxyapatite Produced from Cow Bone

Characterization and Elemental Quantification of Natural Hydroxyapatite Produced from Cow Bone

Fully Biodegradable Composites: Thermal, Flammability, Moisture Absorption and Mechanical Properties of Natural Fibre-Reinforced Composites with Nano-Hydroxyapatite

Physicomechanical Properties of Nanobiocomposite Composed of Polylactic Acid and Biogenic Nano hydroxyapatite

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