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Dispersion of Bioactive Glass using Cetyltrimethylammonium Bromide

  • Ahmed Yehia , Khaled E. Yassin , Madeha Shoeib , S. El-Bahrawy und M. Shalaby
Veröffentlicht/Copyright: 22. Juli 2014
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Tenside Surfactants Detergents
Aus der Zeitschrift Tenside Surfactants Detergents Band 51 Heft 4

Abstract

The dispersion of bioactive glass, (BG), sample was studied using cetyltrimethylammonium bromide (CTAB). An array of experimental techniques like adsorption, Zeta potential and turbidity were used to achieve this goal. Turbidity was used as a parameter to reflect the degree of dispersion where a higher value of turbidity represents higher dispersion efficiency. Dispersion of the BG particles was largely affected by CTAB concentration and the solution pH. Dispersion of the BG particles was increased with increasing of CTAB concentration till the CMC of CTAB is reached. Above the CMC, the BG particles become hydrophilic causing a decrease in glass dispersion. On the other hand, dispersion of the BG particles was affected with the solution pH. It was increased with increasing pH till pH 9. At higher pH, dispersion was decreased where the formation of micelles is favored.

Kurzfassung

Die Dispersion einer bioaktiven Glassprobe (BG) wurde mithilfe von Cetyltrimethylammoniumbromid untersucht. Dazu wurden verschiedene experimentelle Techniken wie Adsorptions-, Zetapotential- und Trübungsmessungen durchgeführt. Die Trübung wurde als ein Parameter für den Dispersionsgrad eingesetzt, wobei gilt, dass bei einer stärkeren Trübung eine höhere Dispersionseffizienz vorliegt. Die Dispersion der BG-Partikel ist stark von der CTAB-Konzentration und von dem pH-Wert der Lösung beeinflusst. Die Dispersion der BG-Partikel nimmt mit steigender CTAB-Konzentration zu, bis die CMC erreicht ist. Oberhalb der CMC, werden die BG-Partikel hydrophil, was eine Abnahme der BG-Dispersion verursacht. Andererseits ist die Dispersion der BG-Partikel vom pH-Wert der Lösung beeinflusst, d.h. sie nimmt mit steigendem pH-Wert bis zum pH 9 zu. Bei höheren pH-Werten nimmt die Dispersion ab und die Bildung von Mizellen wird bevorzugt.

Key words: Bioactive glass; cetyltrimethylammonium bromide (CTAB); adsorption; Zeta potential; turbidity; particle; dispersion; CMC
Stichwörter: Bioaktives Glass; Cetyltrimethylammoniumbromid (CTAB); Adsorption; Zeta-Potential; Trübung; Partikel; Dispersion; CMC
* Correspondence address Prof. Ahmed Yehia, Central Metallurgical R&D Institute, Mineral beneficiation, P.O. Box 87, Cairo, Helwan 2, Egypt, Tel.: 202-25010642, E-Mail:

Ahmed Yehia is a Prof. of mineral processing. He is working at Central Metallurgical R&D Institute, Cairo, Egypt. His research area includes physical separation of minerals such as flotation, magnetic separation and gravity. He also interested to work in the field of surface chemistry.

Khaled E. Yassin is a researcher of mineral processing. He is working at Central Metallurgical R&D Institute, Cairo, Egypt. His research area includes physical separation of minerals such as flotation, magnetic separation and gravity.

Madeha Shoeib is a Prof. of corrosion control and surface protection. She is working at Central Metallurgical R&D Institute, Cairo, Egypt. She has been working in the field of metal coating and surface treatment.

El-Bahrawy, E. M. S. is a Ph.D. student. She is working at Faculty of Oral and Dentist, Faculty of Tanta, Egypt.

Shalaby, H. M. is a Prof. working at Faculty of Oral and Dentist, Faculty of Tanta, Egypt.

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Received: 2013-09-05
Revised: 2014-01-30
Published Online: 2014-07-22
Published in Print: 2014-07-15

© 2014, Carl Hanser Publisher, Munich

Artikel in diesem Heft

  1. Contents/Inhalt
  2. Contents
  3. Abstracts
  4. Abstracts
  5. Application
  6. Inactivation of Human Norovirus by Common Domestic Laundry Procedures
  7. Dispersion of Bioactive Glass using Cetyltrimethylammonium Bromide
  8. Novel/“Green” Surfactants
  9. Amphiphilic Choline Carboxylates as Demulsifiers of Water-in-Crude Oil Emulsions
  10. Synthesis and Antitumor and Surface Activity of Novel Tetrachloro Metallate Complexes of Sulfaquinoxaline with Co(II), Cu(II), or Sn(II) Chlorides
  11. Micellar Chemistry
  12. Combination of Best Promoter and Micellar Catalyst for Cr(VI) Oxidation of Lactose to Lactobionic Acid in Aqueous Medium at Room Temperature
  13. Physical Chemistry
  14. Cloud Point Extraction of Polycyclic Aromatic Hydrocarbons in Aqueous Solution with Nonionic Surfactants
  15. Influence of Alcohols on Micellar and Release Balances of Cationic Surfactant – Carbethopendecinium Bromide (Septonex)
  16. Synthesis
  17. Synthesis and Characterization of Series of Soft-Template Agents for Mesoporous Materials
  18. The Role of Surface Active Agents in Sulfonation of Double Bonds
https://doi.org/10.3139/113.110301
Schlagwörter für diesen Artikel
Bioactive glass; cetyltrimethylammonium bromide (CTAB); adsorption; Zeta potential; turbidity; particle; dispersion; CMC

Artikel in diesem Heft

  1. Contents/Inhalt
  2. Contents
  3. Abstracts
  4. Abstracts
  5. Application
  6. Inactivation of Human Norovirus by Common Domestic Laundry Procedures
  7. Dispersion of Bioactive Glass using Cetyltrimethylammonium Bromide
  8. Novel/“Green” Surfactants
  9. Amphiphilic Choline Carboxylates as Demulsifiers of Water-in-Crude Oil Emulsions
  10. Synthesis and Antitumor and Surface Activity of Novel Tetrachloro Metallate Complexes of Sulfaquinoxaline with Co(II), Cu(II), or Sn(II) Chlorides
  11. Micellar Chemistry
  12. Combination of Best Promoter and Micellar Catalyst for Cr(VI) Oxidation of Lactose to Lactobionic Acid in Aqueous Medium at Room Temperature
  13. Physical Chemistry
  14. Cloud Point Extraction of Polycyclic Aromatic Hydrocarbons in Aqueous Solution with Nonionic Surfactants
  15. Influence of Alcohols on Micellar and Release Balances of Cationic Surfactant – Carbethopendecinium Bromide (Septonex)
  16. Synthesis
  17. Synthesis and Characterization of Series of Soft-Template Agents for Mesoporous Materials
  18. The Role of Surface Active Agents in Sulfonation of Double Bonds
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