Unit:
Κατεύθυνση Επιστήμη Πολυμερών και Εφαρμογές τηςLibrary of the School of Science
Author:
Ζουγανέλης Σταύρος
Supervisors info:
Μαρίνος Πιτσικάλης Καθηγητής
Original Title:
Σύνθεση και χαρακτηρισμός του πολυ(2-χλωροαιθυλο-βινυλαιθέρα) με μεταλλοκενικά σύμπλοκα και χημική τροποποίηση αυτού για τη σύνθεση εμβολιασμένων συμπολυμερών
Translated title:
Synthesis and characterization of poly(2-chloroethyl vinyl ether) with metallocene complexes and its chemical transformation towards the synthesis of grafted polymers
Summary:
In the present thesis the cationic polymerization of 2-chloroethyl vinyl ether
was studied by employing metallocene complexes as initiators. The chemical
reactions of the chlorine group on the resulting polymer and the kinetics of
the polymer’s thermal decomposition were also examined.
The polymerization of CEVE was carried out using two different systems.
Firstly, the previously successful on other vinyl ethers system of
initiator/activator Cp2HfMe2/[Me2NHPh]+[B(C6F5)4]- was employed. Ethyl vinyl
ether (EVE), n-butyl vinyl ether (BVE) and isobutyl vinyl ether have been
successfully polymerized with the aforementioned system. The system behaved in
the same way for PCEVE. Secondly, the complex [CpTi(CH3CN)5]3+[SbCl6]3- was
employed, which was more soluble to the reaction’s solvent, but was found to
perform the reaction extremely fast and without much control.
The next step was to study the chemical reactions of the chlorine groups.
Chlorine groups were first replaced by azide groups and then the azide groups
were reduced to amine groups. From those products a grafted polymer with
poly-benzyl gloutamate side chains. Additionally, PCEVE was used as a
macroinitiator for ATRP in order to produce a brush polymer with methyl
methacrylate side chains.
Finally, a kinetic study of the thermal decomposition of the polymer was
carried out, using thermogravimetric analysis, and the results were correlated
to those from other vinyl ethers.
Keywords:
Metal complexes, 2-chloroethyl vinyl ether, Cationic polymerization, Thermal decomposition, Functionalized polymers
Number of index pages:
16-20
