Yazar "Pekcan, Önder" için listeleme
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Mechanical properties of graphene oxide-polyacrylamide composites before and after swelling in water
Evingür, Gülşen Akın; Pekcan, Önder (Springer, 2018)Polyacrylamide (PAAm) hydrogels have been proposed for use as promising biomaterials in biomedical and tissue engineering but their poor mechanical and water-retention properties have hindered their development. Graphene ... -
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 N,N'-methylenebis (acrylamide) (BIS) were used as a free ... -
Monitoring the gelation of polyacrylamide-sodium alginate composite by fluorescence technique
Evingür, Gülşen Akın; Tezcan, Filiz; Erim, F. Bedia; Pekcan, Önder (Taylor & Francis Ltd, 2012)Polyacrylamide (PAAm)-sodium alginate (SA) composite was prepared with different amounts of SA varying in the range between 0.06% and 2% (w/v). The PAAm-SA composite was characterized by the steady-state fluorescence ... -
Optical and mechanical properties of PNIPAm-MWCNTs and PNIPAm-GO composites
Ünver, Batuhan; Pekcan, Önder; Akın Evingür, Gülşen (John Wiley and Sons Inc, 2023)The aim of this study is to investigate drying, swelling, elastic properties, and to produce optical band gap energies on the performance of Poly (N-Isopropyl acrylamide) - Multi walled carbon nanotubes (PNIPAm – MWCNTs) ... -
Optical energy band gap of PAAm-GO composites
Evingür, Gülşen Akın; Pekcan, Önder (Elsevier Sci Ltd, 2018)Graphene oxide (GO) can be used as an electron acceptor for polymers. The generation of the exciton in such materials is intimately related to the optical band gap. Polyacrylamide (PAAm) - graphene oxide (GO) composites ... -
Optical, Mechanical, and Electrical Properties of Polymer Composites Doped by Multiwalled Carbon Nanotubes
Evingür, Gülşen Akın; Pekcan, Önder (Intechopen, 2016)Three-dimensional networks can be hydrophilic and/or hygroscopic. Optical, mechanical, and electrical properties of these materials encompass many fields of technology. Composites of carbon nanotubes (CNTs) in polymeric ... -
PAAm-Kappa Carrageenan Composites: Drying and Swelling with Various Kappa Carrageenan Contents
Evingür, Gülşen Akın; Pekcan, Önder (Polish Acad Sciences Inst Physics, 2012)The purpose of this study is to discuss the role of kappa-carrageenan (kappa-car) in the drying and swelling of polyacrylamide (PAAm)-kappa-car composite. The fluorescence intensity of pyranine increased and decreased as ... -
Polyacrylamide mediated polyvinyl pyrrolidone composites incorporated with aligned molybdenum disulfide
Özuğur Uysal, Bengü; Akın Evingür, Gülşen; Pekcan, Önder (Wiley Periodicals, 2021)In this study, we aimed to design a mechanically durable material consisting of Molybdenum disulfide (MoS2) as 2D material and polyvinyl pyrrolidone (PVP) enhanced Polyacrylamide (PAAm) composites. Composites containing ... -
A Quartz Crystal Microbalance (QCM) Study on the Formation of Aqueous κ-Carrageenan-Chitosan Composite Bilayers with NaCl and Graphene Oxide
Kara, Selim; Arda, Ertan; Dolaştır, Fahrettin; Pekcan, Önder; Akın Evingür, Gülşen (Taylor and Francis, 2023)Biomaterials and thin biofilms play a fundamental role in the medical, food and pharmaceutical industries. The Quartz crystal microbalance (QCM) measurement technique is one of the attractive techniques which have been ... -
Study of Film Formation From PS Latex/TiO2 Nanocomposites; Effect of Latex Size and TiO2 Content
Uğur, Şaziye; Sunay, M. Selin; Pekcan, Önder (Wiley, 2014)In this work, we investigated the film formation from polystyrene (PS) latex/TiO2 nanocomposites using the steady state fluorescence (SSF) and UV-vis (UVV) techniques depending on PS particle size and TiO2 content. The ... -
Superelastic percolation network of polyacrylamide (PAAm)-kappa carrageenan (kappa C) composite
Evingür, Gülşen Akın; Pekcan, Önder (Springer, 2013)The elasticity of the polyacrylamide (PAAm)-kappa carrageenan (kappa C) composite was determined as a function of (w/v-%) kappa C content at 40 A degrees C. The gel composites studied contained various percentages (w/v-%) ... -
Surfactant and metal ion effects on the mechanical properties of alginate hydrogels
Kaygusuz, Hakan; Evingür, Gülşen Akın; Pekcan, Önder; Klitzing, von Regine; Erim, F. Bedia (Elsevier Science Bv, 2016)This paper addresses the controlled variation of the mechanical properties of alginate gel beads by changing the alginate concentration or by adding different surfactants or cross-linking cations. Alginate beads containing ... -
Temperature Effect on the Elasticity of Acrylamide-n-Isopropylacrylamide Copolymers
Evingür, Gülşen Akın; Pekcan, Önder (Taylor & Francis Inc, 2018)Acrylamide (AAm) - N-isopropylacrylamide (NIPA) copolymers were prepared via free radical crosslinking copolymerization with various weight percentages (wt%) of AAm and NIPA. The temperature dependence of the compressive ... -
Universality of elasticity on PAAM-NIPA copolymer gels
Evingür, Gülşen Akın; Pekcan, Önder (Edp Sciences S A, 2015)Polyacrylamide (PAAm)-N-isopropylacrylamide (NIPA) copolymers were prepared via free radical crosslinking copolymerization with different molar of NIPA varying in the range between 0 and 2 M. The mechanical properties of ... -
The WS(2)dependence on the elasticity and optical band gap energies of swollen PAAm composites
Evingür, Gülşen Akın; Sağlam, Nafia Alara; Çimen, Busra; Uysal, Bengü Özügür; Pekcan, Önder (Sage Publications Ltd, 2021)New generation nano-filler polymer composites have many applications including biomedical, electronic and maritime related applications because of their mechanical, electronic and optical properties. The properties of ...