Preparation of calcium deficient hydroxyapatite on the montmorillonite substrate: Structure and morphology

Pazourková, Lenka; Peikertová, Pavlína; Hundáková, Marianna; Martynková, Gražyna Simha

doi:10.1016/j.matpr.2020.02.927

Cited by 9 publications

(6 citation statements)

References 20 publications

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“…This clearly evident the microstructures of HA that the inclusion of MMT had reduced the pore sizes of composite composites (HA/MMT) as compared to pure HA. The absence of agglomeration in the prepared composite indicates that MMT clay particles have been distributed uniformly in the HA compound [55]. The change in the morphological surface of HA con rms the formation of the composite.…”

Section: Field Emission-scanning Electron Microscope (Fe-sem) Analysismentioning

confidence: 66%

Fabrication of Biologically Active Fish Bone Derived Hydroxyapatite and Montmorillonite Blended Sodium Alginate Composite for In-Vitro Drug Delivery Studies

Ahamed

Manimohan

Kalaivasan

2022

J Inorg Organomet Polym

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Fishbone comprising hydroxyapatite (bio-ceramic) is regularly viewed as a natural resource for biological and pharmaceutical applications. In this study, hydroxyapatite has been prepared from shbone waste using thermal calcination method. The composite hydroxyapatite-montmorillonite-sodium alginate was synthesized by co-precipitation method. Various functional groups of biocomposite were characterised using Fourier Transform infrared spectroscopy (FT-IR). Thermal gravimetric analysis (TGA) and X-ray diffraction studies were exhibited the thermal stability and crystallinity of biocomposite respectively. The morphological surface of composites was studied using scanning electron microscopy (SEM). The synthesized composite was designed to study the enhanced biological potential such as antibacterial, antioxidant, antidiabetic, drug loading and the drug releasing ability. Antioxidant and anti-diabetic analysis of composite were studied using Phosphomolybdenum and α-Amylase inhibitory method respectively. The drug releasing ability of compounds (Doxorubicin and Curcumin) were investigated by UV-spectrophotometry method at different pH medium (pH = 5.5, 6.8 and 7.4). Additionally, In-vitro kinetic studies were carried out on composite to determine the drug releasing ability of doxorubicin and curcumin.

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Section: Field Emission-scanning Electron Microscope (Fe-sem) Analysismentioning

confidence: 66%

Fabrication of Biologically Active Fish Bone Derived Hydroxyapatite and Montmorillonite Blended Sodium Alginate Composite for In-Vitro Drug Delivery Studies

Ahamed

Manimohan

Kalaivasan

2022

J Inorg Organomet Polym

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“…The FTIR spectra of Vrm (Figure 4) showed absorption bands at 3350 cm -1 and 1645 cm -1 assigned to water molecules in the interlayer of Vrm (Madejová et al, 2017), a small shoulder at 3600 cm -1 assigned to superficial OH groups (Madejová et al, 2017), the strong band at 971 cm -1 was assigned to Si-O-Al stretch and is shifted in comparison to other clay minerals where this band appears at a wavenumber higher than 1000 cm -1 , this suggests that the octahedral sheets of vermiculite are trioctahedral and composed of a combination of 3 divalent cations such as Mg 2+ and Fe 2+ with no substitution of Al 3+ in the divalent cation positions (Madejová et al, 2017). The bands at 740 cm -1 and 666 cm -1 were assigned to Al-O-Si out of the plane bending (Pazourková et al, 2014) implying some degree of substitution of Si 4+ for Al 3+…”

Section: Characterization Of Vermiculite (Vrm) Activated Vermiculitementioning

confidence: 83%

Copper supported on acid-activated vermiculite as an efficient and recyclable catalyst for the Biginelli reaction: a green approach

Torres-Méndez

López-Mayorga

2020

Clay miner.

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“…This observation con rmed the formation of HAp-clay composite. Furthermore, Si-O stretching at 780 − 650 cm − 1 , Al-O vibration at 605 cm − 1 , PO 4 3− stretching at 577 cm − 1 and Si-O-Fe deformation noticed at 495 cm − 1 were other prominent peaks present on the surface of the HAp/clay composite [24][25].…”

Section: Characterizationsmentioning

confidence: 92%

Bioactivity Properties of Hydroxyalpatite/clay Nanocomposites

ANDREW,

Akande,

Sodiya

et al. 2023

Preprint

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The need for bioactive and non-toxic biomaterials is on a high demand in tissue engineering applications nowadays. Hydroxyapatite (HAp) is the chief constituent of teeth and bones in mammas. In this study, HAp and HAp/clay nanocomposites were developed via wet chemical process to mimic natural HAp and to equally confer special properties such as mechanical properties, high surface area, crystallinity, high porosity, and biocompatibility on the biomaterial. The properties of the as-prepared nanocomposites analyzed by FT-IR showed functional groups of HAp and clay such as Al–Al–OH, Si–Si–OH, Si–O, PO43-, -OH, and Si–O–Al. The XRD results confirmed the formation of HAp/clay nanocomposite. SEM and TEM images showed the morphologies of the prepared nanocomposites to be round shape particles. Besides, EDX result revealed the Ca/P ratio of HAp and HAp-C to be lower than that of stoichiometric ratio (1.67) which implies the presence of K, Na, Ca, Mg, Si and Al in the HAp/clay nanocomposite. The mechanical properties of the apatite were greatly enhanced by the addition of clay. Furthermore, proliferation of apatites particles onto the surface of the nanocomposites was observed after treatment with simulated body fluids (SBF) media for seven days. Thus, HAp/clay nanocomposites can be useful biomaterials in bone tissue engineering.

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Preparation of calcium deficient hydroxyapatite on the montmorillonite substrate: Structure and morphology

Cited by 9 publications

References 20 publications

Fabrication of Biologically Active Fish Bone Derived Hydroxyapatite and Montmorillonite Blended Sodium Alginate Composite for In-Vitro Drug Delivery Studies

Fabrication of Biologically Active Fish Bone Derived Hydroxyapatite and Montmorillonite Blended Sodium Alginate Composite for In-Vitro Drug Delivery Studies

Copper supported on acid-activated vermiculite as an efficient and recyclable catalyst for the Biginelli reaction: a green approach

Bioactivity Properties of Hydroxyalpatite/clay Nanocomposites

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