Unit:
Κατεύθυνση Επιστήμη Πολυμερών και Εφαρμογές τηςLibrary of the School of Science
Supervisors info:
Μαργαρίτα Χατζηχρηστίδη, Επίκουρος Καθηγήτρια, Τμήμα Χημείας, Ε.Κ.Π.Α.
Original Title:
ΑΝΑΠΤΥΞΗ ΚΑΙ ΜΕΛΕΤΗ ΝΑΝΟΣΥΝΘΕΤΩΝ ΠΟΛΥΜΕΡΙΚΩΝ ΥΛΙΚΩΝ ΜΕ ΝΑΝΟΔΟΜΕΣ ΟΞΕΙΔΙΟΥ ΤΟΥ ΨΕΥΔΑΡΓΥΡΟΥ
Translated title:
SYNTHESIS AND INVESTIGATION OF NANOSTRUCTURED POLYMER COMPOSITES BASED ON ZINC OXIDE
Summary:
In this thesis, the controlled nanostructures synthesis of zinc oxide (ZnO) nanostructures as well as the factors that influence their structural and morphological features during synthesis are examined. These factors are studied under the scope of creating polymeric matrices which contain functional nanostructures.
In particular, this study focuses on synthesizing nanostructures with controllable morphological characteristics by experimenting on various parameters of synthesis that affect the geometric characteristics of the resulting structures. Additionally, the required conditions for their dispersion in the polymeric matrix of polymethyl methacrylate (PMMA) have been studied with an aim to form polymer nanocomposites that would be used as humidity sensors.
At the beginning, ZnO nanostructures are grown by solvothermal and hydrothermal processes while several parameters are studied in order to achieve controllable growth of ZnO nanostructures. The characterization of the nanostructures has been achieved with the use of X-Ray Diffraction (XRD) and Scanning Electron Microscopy (SEM).
Next, ZnO nanostructures were selected according to their morphological and crystallity characteristics and were dispersed into PMMA solution with the ultimate aim of producing nanocomposite materials. The main parameter tested for the optimization of solubility and dispersion was that of the solvent. The produced ZnO/PMMA polymer nanocomposites were coated on IDEs (Interdigitated Electrodes) sensors, then were classified electrically and their response in humidity was also tested.
Experiments proved that acetone is better solvent in comparison to toluene for polymeric nanocomposites ZnO/PMMA while IDEs coated with ZnO/PMMA polymeric nanocomposite produced appeared to be able to be used as humidity sensors.
Main subject category:
Science
Keywords:
Polymer nanocomposites, ZnO nanostructures, solvothermal methods, controllable growth, controllable enclosure
Number of index pages:
11