Vol. 53 No. 01 (2003): Volume 53 Number 01, May 2003
Articles

Fluorescence Method for Studying Latex Film Formation

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  • Önder Pekcan,
  • Şaziye Uğur
Önder Pekcan
Department of Physics, Istanbul technical University
Şaziye Uğur
Department of Physics, Istanbul technical University

Published 05/01/2003

Keywords

  • Fluorescence,
  • interdilfusion,
  • void closure,
  • latex

How to Cite

Pekcan, Önder, and Şaziye Uğur. 2003. “Fluorescence Method for Studying Latex Film Formation”. ITU ARI Bulletin of Istanbul Technical University 53 (01):58-64. https://ari.itu.edu.tr/index.php/ituari/article/view/21.

Copyright (c) 2003 ITU Press

Creative Commons License

This work is licensed under a Creative Commons Attribution-NoDerivatives 4.0 International License.

Abstract

Latex films were prepared separately by annealing pyrene (Py) labeled poly (methyl methacrylate) (PMMA) particles above the glass transition temperature, The variation in the direct fluorescence emission of excited pyrene from labeled latex films was monitored as a function of annealing temperature. Void closure temperature (TL) and time (tc) were determined at the point where the fluorescence emission intensity becomes maximum. Below this point, increase in fluorescence intensity (lop) against temperature was used to determined the activation energy for viscous flow (deltaH=47 kcal/rnol). Decrease in IoP above the void closure temperature was used to produce the backbone activation energy (deltaE=44 kcal/mol) for the interdiffusing chains.
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