Synthesis and characterisation of 3-dimensional hydroxyapatite nanostructures using a thermoplastic polyurethane nanofiber sacrificial template

Poorvisha, R.; Suriyaraj, S. P.; Thavamani, P.; Naidu, Ravi; Megharaj, Mallavarapu; Bhattacharyya, Amitava; Selvakumar, R.

doi:10.1039/c5ra18593a

Cited by 11 publications

(2 citation statements)

References 37 publications

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“…In the research for the better ways of porous ceramics elaboration, some other techniques have been developed such as replica [22,23], sacrificial template [24,25], and direct foaming methods [26,27]. The use of the foaming method had success in producing a porous ceramic with a porosity volume around 80 vol-%, in which the structure of the pores was characterized by spherical interconnected cells [28,29].…”

Section: Introductionmentioning

confidence: 99%

Porous foams based hydroxyapatite prepared by direct foaming method using egg white as a pore promoter

et al. 2018

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Stoichiometric Hydroxyapatite (Ca10(PO)6(OH)2, HAP) foams, have been produced. The porous parts were prepared from a calcined HAP powder and egg white as a bio and nontoxic pore promoter. The colloidal slurry was prepared, poured into cylindrical molds, dried, unmolded, and sintered at 1200 °C. The effects of the concentration of the solid loading, of the dispersing agent, and the foaming agent on the ceramic preparation were examined. X-Ray Diffraction (XRD) and Fourier Transform Infrared (FTIR) were used to evaluate the composition and the structure of the sintered HAP ceramics. Scanning Electron Microscopy (SEM) was used for microstructural analysis. The XRD analysis of the porous parts, prepared under optimized conditions, showed the presence of crystalized HAP (JCPDS 9-432) as a single phase. SEM images showed existence of open and interconnected micro and macro-pores in the ceramics. The use of the egg white protein as pore former provides a total porosity of 86 vol-% and a foam-structure that allows to a micro-porous wall.

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Section: Introductionmentioning

confidence: 99%

Porous foams based hydroxyapatite prepared by direct foaming method using egg white as a pore promoter

et al. 2018

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“…Within this classification of high-volatile and low-volatile solvents, the DMF-acetone mixture stands out as one of the most commonly employed solvent systems for the fabrication of TPU and PVDF nanofibers. This preference is attributed to its low cost and excellent solvability properties [42][43][44][45][46][47].…”

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confidence: 99%

PVDF ve TPU Nanoliflerinin Geliştirilmesi için Stratejik Solvent Sistemi Optimizasyonu

ÜNSAL,

BEDELOĞLU

2023

JIENS

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In this study, we have achieved the successful fabrication of polyvinylidene fluoride (PVDF) and thermoplastic polyurethane (TPU) nanofiber samples. The key element of our investigation revolved around the manipulation of solvent systems, specifically by varying the dimethyl formamide (DMF) to acetone ratio. Our primary objective was to explore the intricate interplay between the chosen solvent system and the resultant fiber morphology. To accomplish this, we employed a multifaceted approach, which encompassed the utilization of scanning electron microscopy (SEM) to provide a comprehensive visual representation of the nanofiber structures and dimensional measurements to quantify their physical attributes. Furthermore, fourier-transform infrared (FT-IR) spectroscopy was employed to delve into the molecular-level alterations induced by the solvent systems on the macromolecular morphology of the polymer nanofibers. This systematic examination not only contributes to a deeper understanding of the nanofiber fabrication process but also holds significant potential for various applications in the realm of materials science and nanotechnology.

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Electrospun cellulose acetate/P(DMDAAC‐AM) nanofibrous membranes for dye adsorption

Peng

Zhang

et al. 2019

J of Applied Polymer Sci

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In recent years, organic nanofibrous membranes have received more attention because of their excellent performance in wastewater treatment. In this study, the soluble poly(dimethyldiallylammonium chloride‐acrylamide) (P(DMDAAC‐AM)) was first synthesized by aqueous copolymerization. Afterward, cellulose acetate (CA)/P(DMDAAC‐AM) composite nanofibrous membranes were electrospun and utilized to remove acid black 172 from simulated wastewater. When the proportion of P(DMDAAC‐AM) to CA was 20, 30, and 40 wt %, the equilibrium adsorption capacities were 116, 159, and 192 mg g−1, respectively. The adsorption capacity of CA/P(DMDAAC‐AM) composite nanofibrous membrane showed a well linear relationship with the average fiber diameter. When the average fiber diameter was 185 nm, the adsorption capacity of 231 mg g−1 was achieved. The adsorption kinetics of CA/P(DMDAAC‐AM) membranes with various fiber diameters was all consistent with the pseudo‐second‐order model. The rate‐limiting step was primarily controlled by chemisorption. The adsorption isothermal data fitted well with the Langmuir isotherm model. The prepared CA/P(DMDAAC‐AM) nanofibrous membrane was effective to remove the acid black 172 in the environmental interested pH range of 4.0–10.0. As an effective dye adsorbent, CA/P(DMDAAC‐AM) nanofibrous membrane shows wide application prospect with its excellent adsorption performance. © 2019 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2020, 137, 48565.

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Synthesis and characterisation of 3-dimensional hydroxyapatite nanostructures using a thermoplastic polyurethane nanofiber sacrificial template

Abstract: A facile synthesis of shape controlled three dimensional hydroxyapatite nanostructures (HAp) using a sacrificial thermoplastic polyurethane (TPU) nanofiber template.

Cited by 11 publications

References 37 publications

Porous foams based hydroxyapatite prepared by direct foaming method using egg white as a pore promoter

Porous foams based hydroxyapatite prepared by direct foaming method using egg white as a pore promoter

PVDF ve TPU Nanoliflerinin Geliştirilmesi için Stratejik Solvent Sistemi Optimizasyonu

Electrospun cellulose acetate/P(DMDAAC‐AM) nanofibrous membranes for dye adsorption

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