MSc. Thesis Defense: Efe Armağan
  • FENS
  • MSc. Thesis Defense: Efe Armağan

You are here

FABRICATION OF STIMULI RESPONSIVE AND CONDUCTING POLYMERIC

NANOTUBES BY CHEMICAL VAPOR DEPOSITION: LOADING/RELEASE AND

SENSOR STUDIES

 

 

Efe Armağan
MAT, MSc. Thesis, 2016

 

Thesis Jury

Assoc. Prof. Dr. Gözde Özaydın-İnce (Thesis Advisor), Asst.Prof. Fevzi Çakmak Cebeci

, Assoc. Prof. Dr. Gökhan Demirel

 

 

Date & Time: 29th, June,2016 –  10.00 AM

Place: Fens G035

Keywords : Stimuli Responsive Polymer Nanotubes, Initiated Chemical Vapor Deposition, Conducting Polymer Nanotubes, Oxidative Chemical Vapor Deposition

 

Abstract

Nanostructures have been the great candidates for many engineering applications due to their unique physical properties, for example; high surface to volume ratio compared to bulk structures. Integration of distinct polymer systems to nanostructures of different shapes, i.e nanofibers, nanorods, nanotubes or nanospheres, has enabled researchers to obtain various functional surfaces with the characteristic advantages of these nanostructures.  In this study, we separately present the hard-templated nanotube fabrication of single and coaxial stimuli responsive and conducting polymer for drug delivery and humidity sensors application. Nanotubes of stimuli responsive polymers, p(methacrylic acid)  p(MAA) , p(N-isopropylacrylamide) p(NIPAAm) and p(hydroxyethylmethacrlyate) p(HEMA), are achieved by initiated chemical vapor deposition (iCVD) technique whereas conducting polymer nanotubes, polyaniline (PANI), are fabricated via oxidative chemical vapor deposition (oCVD). The loading-release capacity and kinetics of single and coaxial stimuli responsive polymeric nanotubes are investigated by monitoring UV-VIS intensity change of model dye molecule, phloroglucinol (Phl). The sensor sensitivity of conducting polymeric nanotubes is studied by analyzing conductivity change of nanotubes under various humid conditions. Furthermore, iCVD and oCVD polymers, which are respectively pHEMA and PANI in this thesis, are combined for coaxial nanotube fabrication in order to enhance the sensitivity of humidity sensors.