Browsing Mühendislik ve Doğa Bilimleri Fakültesi by Author "Evingür, Gülşen Akın"
Now showing items 1-11 of 11
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Conductivity Percolation of Carbon Nanotubes in Polyacrylamide Gels
Pekcan, Önder; Evingür, Gülşen Akın (Intech Europe, 2011)[Abstract Not Available] -
Drying of Polyacrylamide Composite Gels Formed with Various Kappa- Carrageenan Content
Evingür, Gülşen Akın; Pekcan, Önder (Springer/Plenum Publishers, 2011)Drying 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) ... -
EFFECT OF CONTENT AND TEMPERATURE ON THE PHASE TRANSITIONS OF POLYMER COMPOSITES DOPED BY KAPPA CARRAGEENAN AND ALGINATE
Evingür, Gülşen Akın; Pekcan, Önder (Elsevier Academic Press Inc, 2016)[Abstract Not Available] -
Energy needs for drying of PAAm- kappa C composites prepared with various kappa C contents
Pekcan, Önder; Evingür, Gülşen Akın (European Polymer Federation, 2011)Various polyacrylamide (PAAm) - Kappa Carrageenan (kappa C) composite gels were prepared from acrylamide (AAm) N N'- methylenebisacrylamide (BIS) and different kappa C contents by free radical crosslinking copolymerization ... -
Fractal dimension and phase transition of graphene oxide (GO) doped polyacrylamide
Evingür, Gülşen Akın; Pekcan, Önder (ELSEVIER SCI LTD, 2020)Graphene Oxide (GO)- Polyacrylamide composites prepared between 5 and 50 mu l GO were performed by Fluorescence Spectroscopy. The phase transition performed on the composites was measured by calculating the critical ... -
In situ steady state fluorescence (SSF) technique to study drying of PAAm hydrogels made of various cross-linker contents
Evingür, Gülşen Akın; Aktas, Demet Kaya; Pekcan, Önder (Elsevier Science, 2009)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 ... -
Kinetic models for the dynamical behavior of polyacrylamide (PAAm)-kappa-carrageenan (kappa C) composite gels
Evingür, Gülşen Akın; Pekcan, Önder (Springer, 2015)A fluorescence method was employed for studying the drying and swelling of PAAm-kappa C composite gels which were formed from acrylamide (AAm) and N N'- methylenebisacrylamide (BIS) with various kappa-carrageenan (kappa ... -
Monitoring of dynamical processes in PAAm-MWNTs composites by fluorescence method
Evingür, Gülşen Akın; Pekcan, Önder (Taylor & Francis Ltd, 2012)Polyacrylamide (PAAm)-multi walled carbon nanotube (MWNT) composites were prepared by free radical cross-linking copolymerization in water. Ammonium persulfate and NN'-methylenebis (acrylamide) (BIS) were used as a free ... -
The Role of Pyranine in Characterization of PAAm-kappa C Composites by Using Fluorescence Technique
Evingür, Gülşen Akın; Pekcan, Önder (Springer/Plenum Publishers, 2011)Polyacrylamide (PAAm) doped by kappa-carrageenan (kappa C) gels were prepared with various amounts of kappa C varying in the range between 0 wt.% and 3 wt.%. Steady-state fluorescence (SSF) technique was employed for ... -
Steady state fluorescence technique for studying phase transitions in PAAm-PNIPA mixture
Evingür, Gülşen Akın; Aktaş, Demet Kaya; Pekcan, Önder (Taylor & Francis, 2009)The steady state fluorescence (SSF) technique was used to study the sol-gel phase transition during free radical crosslinking copolymerisation of various amounts of acrylamide (AAm) and N-isopropylacrylamide (NIPA) mixtures. ... -
Swelling Kinetics of PAAm-kappa-Carrageenan Composites: A Fluorescence Technique
Evingür, Gülşen Akın; Pekcan, Önder (Taylor & Francis Inc, 2011)The steady-state fluorescence (SSF) technique was introduced for studying swelling of disc-shaped polyacrylamide (PAAm) gels containing various amount of kappa-carrageenan (kappa C). They were prepared by free-radical ...