Sol–gel synthesis and physical characterization of high impact polystyrene nanocomposites based on Fe2O3 doped with ZnO

Nahrawy, Amany M. El; Bakr, Abu; Shaheen, Th. I.; Mansour, A. M.

doi:10.1007/s00339-020-03822-w

Cited by 50 publications

(21 citation statements)

References 55 publications

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“…The loading of nano-CaO and nano-CaO/Ag inside chitosan walls was formed using the in-situ polymerization via the poly-condensation in the acetic sol-gel process. The preparation of nano-CaO and doped with Ag NPs through the formation of covalent and -OH linkages from the reaction of Ca with Ca or Ag in the sol-gel reaction at 5o0C [4,15,38,39], as manifested in Fig. 1.…”

Section: Electrostatic Attraction During Acetic Sol-gel Polymerizationmentioning

confidence: 99%

“…Metal oxide (MO) nanoparticles have recently gotten a lot of interest because of their potential applications in optoelectronics, catalysts, adsorbents, and bactericides [1][2][3]. Because of their plentiful supply of raw materials, good thermal stability, low biological toxicity, and bio-degradability, MO nanoparticles have a wide range of applications [4,5]. Nanostructures metals are a course of functional materials that have discrete physical and chemical properties that are subjective by their relative composition, scale, and structure.…”

Section: Introductionmentioning

confidence: 99%

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Nano-architecture of CaO/Ag-chitosan nanocomposite by sol gel process: formation and characterization

2021

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Functionalize nano-architecture CaO/Ag-chitosan bio-nanoparticles were prepared by the acetic acid sol-gel process and were loaded into the chitosan nanocomposite. The so prepared bioactive nano-CaO/Ag-chitosan nanocomposite was characterized using XRD, TEM, FE-SEM, optical, and the antimicrobial activity was evaluated. The antibacterial evaluations implied that chitosan, nano-CaO, and nano-CaO/Ag-chitosan are exhibited subtle antimicrobial activities against both Gram-positive (Staphylococcus aureus) microbes and Gram-negative (Escherichia coli).Ag doping of CaO produces an oxygen vacancy, defects, and improved light scattering and so leads to transmission increase and absorption increase which in turn lead to increase of the bandgap energy. The optical conductivity of the nanocomposites decreased with Ag addition as a direct result of the bandgap increase. These prefatory investigations of the bio nanocomposites will open a good platform for their use in various bio-industries.

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Section: Electrostatic Attraction During Acetic Sol-gel Polymerizationmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Nano-architecture of CaO/Ag-chitosan nanocomposite by sol gel process: formation and characterization

2021

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“…HIPS material has proven its potential in developing prototypes, tooling for food industries, low strength molding, optoelectronic, chemical, and biological applications [ 29 , 30 , 31 , 49 ]. The applications can be enhanced by notably improving the internal (reduced porosity) and external features (improved dimensional accuracy) of printed parts.…”

Section: Introductionmentioning

confidence: 99%

Analysis and Optimization of Dimensional Accuracy and Porosity of High Impact Polystyrene Material Printed by FDM Process: PSO, JAYA, Rao, and Bald Eagle Search Algorithms

et al. 2021

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High impact polystyrene (HIPS) material is widely used for low-strength structural applications. To ensure proper function, dimensional accuracy and porosity are at the forefront of industrial relevance. The dimensional accuracy cylindricity error (CE) and porosity of printed parts are influenced mainly by the control variables (layer thickness, shell thickness, infill density, print speed of the fused deposition modeling (FDM) process). In this study, a central composite design (CCD) matrix was used to perform experiments and analyze the complete insight information of the process (control variables influence on CE and porosity of FDM parts). Shell thickness for CE and infill density for porosity were identified as the most significant factors. Layer thickness interaction with shell thickness, infill density (except for CE), and print speed were found to be significant for both outputs. The interaction factors, i.e., shell thickness and infill density, were insignificant (negligible effect) for both outputs. The models developed produced a better fit for regression with an R2 equal to 94.56% for CE, and 99.10% for porosity, respectively. Four algorithms (bald eagle search optimization (BES), particle swarm optimization (PSO), RAO-3, and JAYA) were applied to determine optimal FDM conditions while examining six case studies (sets of weights assigned for porosity and CE) focused on minimizing both CE and porosity. BES and RAO-3 algorithms determined optimal conditions (layer thickness: 0.22 mm; shell thickness: 2 mm; infill density: 100%; print speed: 30 mm/s) at a reduced computation time equal to 0.007 s, differing from JAYA and PSO, which resulted in an experimental CE of 0.1215 mm and 2.5% of porosity in printed parts. Consequently, BES and RAO-3 algorithms are efficient tools for the optimization of FDM parts.

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“…2 (2022) regeneration research, promote supplementary studies for its positive usage and elevates several processing techniques to synthesize it [16 -19]. Nevertheless, more efficient synthesis mechanism are currently developed to provided potential and massive quantities of HA nanopowders for future its usage in biomedical applications [19][20][21][22].…”

Section: Introductionmentioning

confidence: 99%

Sounchemical synthesis of Graphene/nano hydroxyapatite composites for potential biomedical application

Bakr

Anis

2021

Egypt. J. Chem.

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Graphene nanocrystalline hydroxyapatite composites (G/nHA) were prepared using a wet precipitation method with CaCl2 and Na2 HPO4 as the main material in the presence of ultrasonic irradiation. The calcium to phosphate ratio (Ca/P) was adjusted to be about 1.67 while the pH value kept at 9.5-10.5. The texture properties of the G/nHA composites were determined through series of characterization techniques. High-resolution Scanning Electron Microscopy (HR-SEM) and high-resolution Transmission electron microscope (HR-TEM) were employed to determine the particle size and structure morphology of composites. The Crystalline and molecular structure were checked using (XRD), Raman and (FTIR), while thermal decomposition behavior was reported by thermogravimetric analysis (TGA-DTA). Energy dispersive spectroscopy (EDAX) results revealed that the prepared nHA and G2nHA samples had a Ca/P ratio of 1.66 and 1.73 respectively which are nearly matching to previously reported value. FT-IR analysis identified functional groups and confirmed the results obtained from the X-ray diffraction data that the prepared powders were indeed composed of nanoscale hydroxyapatite. The results indicate that nHA successfully prepared through this method and the range of particles was found around nanoscale. The compression test indicates that even the addition of very small amount of Graphene sheets like structure into the crystalline matrix of nHA enhancing the mechanical properties of the prepared composites compared to the pure nHA.

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Sol–gel synthesis and physical characterization of high impact polystyrene nanocomposites based on Fe2O3 doped with ZnO

Cited by 50 publications

References 55 publications

Nano-architecture of CaO/Ag-chitosan nanocomposite by sol gel process: formation and characterization

Nano-architecture of CaO/Ag-chitosan nanocomposite by sol gel process: formation and characterization

Analysis and Optimization of Dimensional Accuracy and Porosity of High Impact Polystyrene Material Printed by FDM Process: PSO, JAYA, Rao, and Bald Eagle Search Algorithms

Sounchemical synthesis of Graphene/nano hydroxyapatite composites for potential biomedical application

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