Startseite Viscometric Behaviour and Micellization of Complexes of Copper (II) Stearate with N-donor Heterocyclic Dyes
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Viscometric Behaviour and Micellization of Complexes of Copper (II) Stearate with N-donor Heterocyclic Dyes

  • N. Mathur , K. G. Ojha , A. Imran und S. Pooja
Veröffentlicht/Copyright: 2. April 2013
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Tenside Surfactants Detergents
Aus der Zeitschrift Tenside Surfactants Detergents Band 46 Heft 1

Abstract

Colloido-chemical behavior of copper (II) stearate and N-donor ligands in benzene-methanol mixture of varying composition has been investigated by viscometric measurements. The critical micelle concentration values depend upon the composition of solvent mixture and are to be found in close agreement with each other. The general trend observed is that the viscometric parameters with concentration are quite different and the plots are obtained with curvature at a definite concentration corresponding to critical micelle concentration at which there is marked change in the aggregation of the complex molecules. The results of phenylthiourea and benzothiazole complexes in regards to solute-solvent and solute-solute interactions in mixed solvent systems have been discussed in terms of the equations proposed by Moulik and Jones-Dole. The complexes were synthesized with N-donor ligands and copper (II) stearate and characterized by their elemental analysis, molecular weight, melting point, IR and NMR spectral studies. Due to the surface-active properties of copper stearate, the complexes show remarkable applications in industries and are used as emulsifiers, dispersing agents, foaming and wetting agents. N-donor ability of ligands make them useful as intermediates for many organic compounds such as colorants, agrochemical and pharmaceutical. They are good antiviral, antibacterial and antimalerial agents.

Kurzfassung

Das kollidal-chemische Verhalten von Kupfer(II)stearat und N-Donor-Liganden in Benzol-Methanol-Mischungen unterschiedlicher Zusammensetzung wurden mit viskometrischen Methoden untersucht. Die Werte der kritischen Mizellbildungskonzentration sind abhängig von der Zusammensetzung der Lösungsmittelmischungen und liegen gegenseitig in guter Übereinstimmung. Der allgemein beobachtete Trend ist, dass die viskometrischen Parameter mit der Konzentration völlig unterschiedlich sind und die erhaltenen Plots mit Krümmung bei einer bestimmten Konzentration zu der kritischen Mizellbildungskonzentration korrespondieren, an der der Aggregationswechsel der Komplexmoleküle gekennzeichnet ist. Die Ergebnisse der Komplexe von Phenylthioharnstoff und Benzothiazol, bezogen auf die Solute-Solvent- und Solvent-Solute-Wechselwirkungen der Lösungsmittelmischungssysteme, werden anhand der vorgeschlagenen Gleichungsterme nach Moulik und Jones-Dole diskutiert. Die Komplexe wurden mit N-Donor-Liganden und Kupfer(II)stearat synthetisiert und durch Elementaranalyse, Molekülgewicht, Schmelzpunkt, IR- und NMR-Spektren charakterisiert. Aufgrund der oberflächenaktiven Eigenschaften von Kupferstearat zeigen die Komplexe bemerkenswerte industrielle Verwendungen und werden als Emulgator, Dispergiermittel, Schaumbildner und Netzmittel eingesetzt. Das N-Donor-Vermögen der Liganden macht sie als Zwischenprodukte für viele organische Verbindungen wie Farbstoffe, Agro-Chemikalien und Arzneimittel verwendbar. Sie sind gute antivirale, antibakterielle und Antimalaria-Mittel.

Key words:: N-Donorheterocyclic dyes; copper stearate; phenylthiourea; benzothiazole; viscosity; fluidity; Jones-Dole equation; Moulik equation
Stichwörter:: N-donorheterozyklische Farbstoffe; Kupferstearat; Phenylthioharnstoff; Benzothiazol; Viskosität; Fluidität; Jones-Dole-Gleichung; Moulik-Gleichung
∗ Dr. Neha Mathur, 70/21, Patel Marg, Mansarovar, Jaipur, India, E-Mail:

Dr. Neha Mathur was born in June 1969. She completed her Post Graduation in 1989. After completing her Ph.D. in 1994 from M.D.S. University, Ajmer. She is at present working as Associate Professor in S. D. Govt. college, Beawar (Rajasthan).

Dr. K. G. Ojha was born in October 1949, studied for his M.Sc. at Rajasthan University. After obtaining his Ph.D. in 1981, he worked for College-Education Rajasthan for 26 years and joined M.D.S. University as Associate Professor in the Department of Applied Chemistry in 1997. At present he is working as Professor & Head, Department of Pure and Applied Chemistry, M.D.S. University, Ajmer (Rajasthan).

Ahmed Imran was born in October 1981. He completed his post graduation in 2006 from Mahatma Gandhi Institute of Applied Sciences, Jaipur. At present he is working as Research Scholar at Research Laboratory S.D. Govt. College, Beawar (Rajasthan).

Saxena Pooja was born in September 1982, She did her M.Sc. in 2004, from S.D. Govt. College, Beawar. Currently she is working as Research Scholar at Research Laboratory, S.D. Govt. College, Beawar (Rajasthan).

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Received: 2008-03-30
Revised: 2008-09-23
Published Online: 2013-04-02
Published in Print: 2009-01-01

© 2009, Carl Hanser Publisher, Munich

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https://doi.org/10.3139/113.110004
Schlagwörter für diesen Artikel
N-Donorheterocyclic dyes; copper stearate; phenylthiourea; benzothiazole; viscosity; fluidity; Jones-Dole equation; Moulik equation

Artikel in diesem Heft

  1. Contents/Inhalt
  2. Contents
  3. Abstracts
  4. Abstracts
  5. Basic Science
  6. A Physical Method for Measuring the Drying Performance in Household Dishwashers
  7. Chitosan Hydrogels Covalently Crosslinked with a Natural Reagent
  8. Novel Surfactants
  9. Biological Activity of Some Novel Cationic Germanium and Titanium Metal Based Surfactants
  10. Viscometric Behaviour and Micellization of Complexes of Copper (II) Stearate with N-donor Heterocyclic Dyes
  11. Isolation of Phytosterols from Deodorizer Distillate and their Utilization in Preparation of Surface-active Agent
  12. Physical Chemistry
  13. Krafft Points and Cloud Points of Polyoxyethylated Nonionic Surfactants
  14. Sustainability
  15. Sustainability in Industrial Laundering
  16. GDCh-News
  17. Fourth European Detergents Conference Report
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