• English
    • Türkçe
  • English 
    • English
    • Türkçe
  • Login
View Item 
  •   DSpace Home
  • Araştırma Çıktıları / WOS
  • Araştırma Çıktıları / WOS
  • View Item
  •   DSpace Home
  • Araştırma Çıktıları / WOS
  • Araştırma Çıktıları / WOS
  • View Item
JavaScript is disabled for your browser. Some features of this site may not work without it.

Modelling of Swelling by the Fluorescence Technique in Kappa Carrageenan Gels

Thumbnail
Date
2011
Author
Tari, Özlem
Pekcan, Önder
Abstract
Kappa (-kappa) carrageenan gels prepared with various carrageenan concentrations in pure water were completely dried and then swelled in water vapor. Steady state fluorescence measurements were performed using a spectrometer equipped with temperature controller. Pyranine was embedded in kappa-carrageenan gels as a fluorescence probe during gel preparation. The fluorescence intensity I increased exponentially as swelling time is increased for all gel samples. The increase in I was modelled using Li-Tanaka equation from which swelling time constants tau(c) and cooperative diffusion coefficients D-c were determined. It was observed that D-c increased as the swelling temperature was increased. On the other hand at each temperature it was seen that D-c decreased as kappa carrageenan concentration was increased. Activation energies for swelling were obtained and found to be 57.4 58.3 and 62.73kJ mol(-1) for the gels with increasing amount of kappa-carrageenan content.

Volume

1400

Pages

470-475

URI

https://hdl.handle.net/20.500.12469/1004

Collections

  • Araştırma Çıktıları / Scopus [1565]
  • Araştırma Çıktıları / WOS [1518]
  • Biyoinformatik ve Genetik / Bioinformatics and Genetics [220]

Keywords

Swelling
Fluorescence
Carrageenan

Share


DSpace software copyright © 2002-2015  DuraSpace
Contact Us | Send Feedback
Theme by 
@mire NV
 

 

Browse

All of DSpaceCommunities & CollectionsBy Issue DateBy AuthorsBy TitlesBy SubjectsBy TypesBy LanguagesBy DepartmentsBy PublishersBy KHAS AuthorsBy Access TypesThis CollectionBy Issue DateBy AuthorsBy TitlesBy SubjectsBy TypesBy LanguagesBy DepartmentsBy PublishersBy KHAS AuthorsBy Access Types

My Account

LoginRegister

Statistics

View Google Analytics Statistics

DSpace software copyright © 2002-2015  DuraSpace
Contact Us | Send Feedback
Theme by 
@mire NV