Evingür, Gülşen AkınPekcan, Önder2019-06-272019-06-27201161053-05091053-0509https://hdl.handle.net/20.500.12469/975https://doi.org/10.1007/s10895-011-0841-3Drying 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.eninfo:eu-repo/semantics/openAccessDryingAcrylamideKappa-carrageenan (kappa C)FluorescenceComposite gelsArticle15311537421WOS:00029318890002810.1007/s10895-011-0841-32-s2.0-80053384125N/AN/A21246265