In situ steady state fluorescence (SSF) technique to study drying of PAAm hydrogels made of various cross-linker contents

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Date

2009

Authors

Evingür, Gülşen Akın
Aktas, Demet Kaya
Pekcan, Önder

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Elsevier Science

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Abstract

Drying experiments of polyacrylamide (PAAm) gels were performed using steady-state fluorescence (SSF) spectrometer. Pyranine (P) was introduced as a fluorescence probe and intensity of P from various crosslinker content gel samples was monitored. It was observed that the intensity of P increased during the in situ drying processes. Gravimetrical and volumetric experiments were also performed. An empirical model was derived and introduced to determine the desorption coefficient D of water molecules from the drying PAAm gels. It is observed that D increased as the cross-linker content was increased. (c) 2008 Elsevier B.V. All rights reserved.

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Keywords

Crosslinker, Drying, Fluorescence, Hydrogels

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Citation

13

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Q2

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Q1

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Volume

48

Issue

2

Start Page

600

End Page

605