Oğuzhan Oğuz

 

Oğuzhan Oğuz , PhD Candidate

2012 - present : PhD student, Materials Science and Engineering, Sabanci University

Curriculum Vitae

oguzo@sabanciuniv.edu

Education MSc in Polymer Science and Technology, Istanbul Technical University, Turkey, 2012  
BSc  in Metallurgical and Materials Engineering, Kocaeli University,Turkey, 2010
 
MSc Thesis

A Parametric Study of PEO-Based Thermoplastic Polyurethane Silica Nanocomposites

Recently, silica filled thermoplastic polyurethanes have gained great interest due to their majestic properties, which arise from the synergism between the properties of the main components and their unique interfacial characteristics. A comprehensive understanding of these materials is crucial for developing high-performance polymer nanostructured multi-phase systems. While familiar characterization techniques give chance to investigate the nature of these materials, statistical design tools offer a different approach to conceive the constitution of multicomponent polymer systems. Integrated use of these techniques and tools can make these materials better. This study is an effort to find out how the system can be defined both as statistically and experimentally. Poly(ethylene oxide) based thermoplastic polyurethanes/silica nanocomposites were chosen as a polymer nanostructured multi-phase system. Box-Behnken Design tool was considered for multivariate analysis of experiments. As the main parameters, the soft segment molecular weight, filler content and size were pre-selected. Because of their effects on the polymer filler interaction was clearly observed by chemical and morphological analysis. The nanocomposite films having various soft segment molecular weight, filler content and size were prepared by solution casting method at critical design points. Furthermore, thermal and mechanical analysis were performed for each design point in order to investigate the responses such as soft segment crystallinity, rigid amorphous fraction, tensile strength and elongation at break. The surrogate models were created by the analysis of variance for each response. All responses were initially fit to a second order polynomial function that was followed by the sequential elimination of ‘least significant’ factors. The model fit quality was presented in actual vs prediction plots. The individual and interactive effects of parameters were reported by the statistical expressions for each response. The physical meaning of the individual and interactive effects of parameters were explained in accordance with the experimental results.

Publications
&
Proceedings

  • O.Oguz, O.Malay, C.Kosak, E.Yilgor, I.Yilgor and Y.Z. Menceloglu,  Effect of Filler Size on the Soft Segment Crystallinity and Mechanical Strength of Polyether based TPU/Silica Nanocomposites, In Proc. of American Chemical Society Advances in the Science of Polyurethanes Meeting, Polymer Chemistry Division, 2012.
  • O.Malay, O.Oguz, C.Kosak, E.Yilgor, I.Yilgor and Y.Z. Menceloglu, PEO-OH  based TPU/Silica Nanocomposites: Preparation and Properties, In Proc. of 243rd American Chemical Society National Meeting, Polymeric Materials: Science and Engineering Division, 2012. 
  • O.Malay, O.Oguz, C.Kosak, E.Yilgor, I.Yilgor and Y.Z. Menceloglu PTMO based TPU/Silica Nanocomposites: Preparation and Properties, In Proc. of 243rd American Chemical Society National Meeting, Polymeric Materials: Science and Engineering Division, 2012.
  • E.Simsek, G.Toprak, K.Bilge, O.Oguz and Y.Z Menceloglu, Recycling of Waste Vulcanized Ethylene Propylene Diene Monomer(EPDM) Rubber via Blending in a High Shear Thermo-Kinetic Mixer, Manuscript in Preperation.
Research Areas Synthesis and Characterization of Nanoparticles, Silica Filled Elastomeric Nanocomposites, Solid-Solid Phase Change Materials, Polymer-Filler Interaction, Polymer Crystallization.