Synthesis of complex macromolecular architectures based on poly(N-Vinylpyrrolidone): Via Revesrible Addition Fragmentation Chain Transfer Polymerization

Postgraduate Thesis uoadl:2884007 241 Read counter

Unit:
Κατεύθυνση Επιστήμη Πολυμερών και Εφαρμογές της
Library of the School of Science
Deposit date:
2019-10-29
Year:
2019
Author:
Kokkorogianni Olga
Supervisors info:
Πιτσικάλης Μαρίνος, Καθηγητής, Χημείας, Εθνικό και Καποδιστριακό Πανεπιστήμιο Αθηνών (ΕΚΠΑ)
Original Title:
Σύνθεση πολύπλοκων αρχιτεκτονικών βασισμένων στην πολυ(Ν-Βινυλοπυρρολιδόνη): Με την τεχνική του Πολυμερισμού Αντιστρεπτής Μεταφοράς Αλυσίδας με Προσθήκη και Απόσπαση.
Languages:
Greek
Translated title:
Synthesis of complex macromolecular architectures based on poly(N-Vinylpyrrolidone): Via Revesrible Addition Fragmentation Chain Transfer Polymerization
Summary:
In this thesis the synthesis of complex architectures of poly(N-vinylpyrrolidone) was explored. Initially there was an unfruitful attempt to conduct PNVP star-shaped homopolymers, using DVB as a core. At first the synthesis of linear PNVP took place, followed by the difunctional monomer DVB addition. The results were not what e expected.
Additionally star-shaped homopolymers of PNVP were synthesized using a multifunctional core. The polymers were conducted using the arm first technique, which means that firstly the synthesis of a PNVP arm took place. Continuously the arm was conjugated to a multifunctional core via the formation of amide bond. The results of this synthesis are very promising.
Finally, PS-b-PNVP copolymers were synthesized, exploiting Reversible Addition Fragmentation Transfer, RAFT, polymerization. At first, the synthesis of a polystyrene macro-RAFT agent took place, which was later used for the block polymerization on N-vinylpyrrolidone.
These polymers were characterized structurally and molecularly by Gel Permeation Chromatography (GPC), Nuclear Magnetic Resonance Spectroscopy (NMR) and Static Light Scattering (SLS).
Main subject category:
Science
Keywords:
RAFT, N-Vinylpyrrolidone, Radical Polymerization, star polymers, polymer conjugation
Index:
No
Number of index pages:
0
Contains images:
No
Number of references:
43
Number of pages:
105
File:
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