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Drying of Polyacrylamide Composite Gels Formed with Various Kappa- Carrageenan Content

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Drying of Polyacrylamide Composite Gels Formed with Various Kappa- Carrageenan Content.pdf (218.7Kb)
Date
2011
Author
Evingür, Gülşen Akin
Pekcan, Önder
Abstract
Drying of polyacrylamide (PAAm)-kappa-carrageenan (kappa C) composite gels were monitored by using steady-state fluorescence technique. Disc shaped gels were formed from acrylamide (AAm) and N N'- methylenebisacrylamide(Bis) with various kappa- carrageenan (kappa C) contents by free radical crosslinking copolymerization in water. Pyranine (P) was doped as a fluorescence probe and scattered light I (sc) and fluorescence intensities I were monitored during drying of these gels. It is observed that fluorescence intensity of pyranine increased as drying time is increased for all samples. The increase in I was modeled using Stern- Volmer equation and diffusion with moving boundary. It is found that desorption coefficient D decreased as kappa C contents were increased. Supporting gravimetrical and volumetric experiments were also carried out during drying of PAAm- kappa C composite gels.

Source

Journal of Fluorescence

Issue

4

Volume

21

Pages

1531-1537

URI

https://hdl.handle.net/20.500.12469/975
https://doi.org/10.1007/s10895-011-0841-3

Collections

  • Araştırma Çıktıları / Scopus [1319]
  • Araştırma Çıktıları / WOS [1335]
  • Biyoinformatik ve Genetik / Bioinformatics and Genetics [212]

Keywords

Drying
Acrylamide
Kappa-carrageenan (kappa C)
Fluorescence
Composite gels

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