In situ fluorescence study of swelling, sorption and desorption processes in and out of PAAm gels

Yükleniyor...
Küçük Resim

Tarih

2008-05

Dergi Başlığı

Dergi ISSN

Cilt Başlığı

Yayıncı

Wiley-V C H Verlag GMBH

Erişim Hakkı

info:eu-repo/semantics/closedAccess

Araştırma projeleri

Organizasyon Birimleri

Dergi sayısı

Özet

Small molecule sorption and desorption in and out of polyacrylamide (PAAm) gels were studied at various temperatures. Pyranine (P(y)) dissolved in water used as a probe. Fluorescence emission intensity, I(p) from P(y) was monitored for studying sorption and desorption processes. Scattered light intensities, I(SC) from PAAm gel was also monitored to observed structural variations during sorption and desorption process. Li-Tanaka model was applied to produce the swelling time constants, tau(C) and sorption coefficients, D(C) for the swelling processes. on the other hand, sorption and desorption processes were studied and coefficients were produced by using Fickian model. Related activation energies were also calculated from the corresponding physical processes.

Açıklama

Anahtar Kelimeler

Desorption, Fluorescence, Hydrogels, Sorption, Temperature, Photon Transmission Technique, Radical Cross-Linking, Polyacrylamide Gels, Phase-Transition, Linker Contents, Temperature, Diffusion, Hydrogels, Kinetics, Copolymerization, ABS resins, Activation energy, Colloids, Dissolution, Emission spectroscopy, Gelation, Gels, Light emission, Lithium, Luminescence, Polymers, Desorption processes, Desorptlon, Fickian models, Fluorescence emission intensities, Fluorescence studies, In-situ, Physical processes, Polyacrylamide, Pyranine, Scattered light, Small molecules, Sorption coefficients, Structural variations, Swelling processes, Swelling times

Kaynak

Macromolecular Symposia

WoS Q Değeri

Q3
Q3

Scopus Q Değeri

Q3

Cilt

265

Sayı

Künye

Evingür, G. A., Karsh, K. & Pekcan, M. Ö. (2008). In situ fluorescence study of swelling, sorption and desorption processes in and out of PAAm gels. Macromolecular Symposia, 265(1), 100-110. doi:10.1002/masy.200850511