Synthesis, molecular characterization and theoretical study of first generation dendritic homopolymers of butadiene and isoprene with different microstructures
Φόρτωση...
Ημερομηνία
Συγγραφείς
Rangou, S.
Theodorakis, P. E.
Gergidis, L. N.
Avgeropoulos, A.
Efthymiopoulos, P.
Smyrnaios, D.
Kosmas, M.
Vlahos, C.
Giannopoulos, T.
Τίτλος Εφημερίδας
Περιοδικό ISSN
Τίτλος τόμου
Εκδότης
Elsevier
Περίληψη
Τύπος
Είδος δημοσίευσης σε συνέδριο
Είδος περιοδικού
peer reviewed
Είδος εκπαιδευτικού υλικού
Όνομα συνεδρίου
Όνομα περιοδικού
Polymer
Όνομα βιβλίου
Σειρά βιβλίου
Έκδοση βιβλίου
Συμπληρωματικός/δευτερεύων τίτλος
Περιγραφή
We report the Synthesis of first generation dendritic homopolymers consisting of either poly(butadiene) (PB) of 1,4-microstructure or poly(isoprene) enriched in 3,4-microstructure (at least 55% PI3,4). The main aspect was the synthesis of polymers exhibiting high molecular and compositional homogeneity. The preparation of these materials was achieved via anionic polymerization techniques in combination with chlorosilane chemistry. The molecular characterization of the final dendritic materials was made via size exclusion chromatography (SEC), membrane osmometry (MO), dilute solution viscometry and H-1 nuclear magnetic resonance (NMR) spectroscopy, leading to the conclusion that they can be considered as model polymers. The conformational properties of the synthesized dendritic polymers were studied by means of analytical theory and Monte Carlo simulations using coarse graining models with the same number of segments. The radii of gyration and the length of the branches of zeroth and first generations were calculated via lattice, off-lattice algorithms, and renormalization group techniques. The theoretical findings were compared with the respective results of star polymers with the same functionality and equivalent branch lengths. (c) 2006 Elsevier Ltd. All rights reserved.
Περιγραφή
Λέξεις-κλειδιά
dendritic polymers, synthesis and characterization, theoretical study, living anionic-polymerization, star-burst dendrimers, graft-copolymers, monte-carlo, conformational properties, starburst polymers, polystyrene, simulation, architecture, dimensions
Θεματική κατηγορία
Παραπομπή
Σύνδεσμος
<Go to ISI>://000243804100026
http://ac.els-cdn.com/S003238610601295X/1-s2.0-S003238610601295X-main.pdf?_tid=f1a70f76-349a-11e3-a299-00000aab0f02&acdnat=1381732763_57384b0c7daeb3b8cfa7d814c19950c6
http://ac.els-cdn.com/S003238610601295X/1-s2.0-S003238610601295X-main.pdf?_tid=f1a70f76-349a-11e3-a299-00000aab0f02&acdnat=1381732763_57384b0c7daeb3b8cfa7d814c19950c6
Γλώσσα
en
Εκδίδον τμήμα/τομέας
Όνομα επιβλέποντος
Εξεταστική επιτροπή
Γενική Περιγραφή / Σχόλια
Ίδρυμα και Σχολή/Τμήμα του υποβάλλοντος
Πανεπιστήμιο Ιωαννίνων. Σχολή Θετικών Επιστημών. Τμήμα Χημείας