Supervisors info:
Ερμόλαος Ιατρού Αναπλ. Καθηγητης ΕΚΠΑ (επιβλέπων), Μαρίνος Πιτσικάλης Αναπλ. Καθηγητής ΕΚΠΑ, Γεώργιος Κόρδας Ερευνητής Α΄
Summary:
The research presented in this thesis, is focused in the synthesis of polymer
brushes on the surface of SiO2 nanospheres, utilizing copper mediated ATRP and
ARGET-ATRP as controlled/ “living” radical polymerization method. First, SiO2
were synthesized via sol-gel method and the surface was functionalized with the
organic silane (3-Αminopropyl)triethoxysilane (APTES) and further with the ATRP
initiator 2-bromoisobutyryl bromide (BiBB). The functionalized SiO2-Br was used
as macroinitiator for the polymerization of methyl methacrylate (MMA),
sulfobetaine methacrylate, and the macromonomer, poly(ethylene) glycol
methacrylate (PEGMA).The system SiO2-PMMA-Br, was used as macroinitiator for
the polymerization of PEGMA, in order to synthesize block copolymers on the
surface of the nanospheres, and dispersion studies in organic and aqueous
solvents, were performed.
Temperature dependence studies were performed for the hybrid system SiO2-PSBMA.
The samples were characterized with Scanning Electron Microscopy (SEM),
Infrared spectroscopy (IR), Raman spectroscopy, Nuclear Magnetic Resonance
(NMR), Dynamic Light Scattering (DLS) and Thermogravimetric Analysis (TGA).
Keywords:
Controlled radical polymerization, Polymer brushes, SI-ATRP, ARGET ATRP, Hybrid nanoparicles
