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Drying process in vapor swollen heterogels

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Drying process in vapor swollen heterogels.pdf (318.9Kb)
Date
2010
Author
Erdogan, Matem
Pekcan, Önder
Abstract
Disk-shaped heterogels were prepared by combining methyl methacrylate (MMA) and styrene (S) with ethylene glycol dimethacrylate (EGDM) as a crosslinker agent in the presence of 22'-azobisisobutyronitrile (AIBN). Swelling experiments were performed under chloroform vapor and the swollen gels are then allowed to dry under room temperature. Gravimetric technique was used to study drying processes. It is observed that two different regimes are present in the drying processes of these heterogels. Fickian diffusion model was used to determine desorption coefficients for each drying step in both regimes. Desorption coefficients D (d) of heterogels were found to be strongly correlated with the mixture composition of polymeric materials in the heterogel system for both regimes. Heterogels with high S content dry much slower than the heterogels with low S content.

Source

Polymer Bulletin

Issue

7

Volume

64

Pages

667-676

URI

https://hdl.handle.net/20.500.12469/1050
https://dx.doi.org/10.1007/s00289-009-0208-y

Collections

  • Araştırma Çıktıları / Scopus [1345]
  • Araştırma Çıktıları / WOS [1335]
  • Biyoinformatik ve Genetik / Bioinformatics and Genetics [212]

Keywords

Drying
Desorption
Heterogels
Fickian diffusion

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