Εξειδίκευση τύπου :	Άρθρο σε επιστημονικό περιοδικό
Τίτλος:	Thermoresponsive aggregation of PS-PNIPAM-PS triblock copolymer: A combined study of light scattering and small angle neutron scattering
Δημιουργός/Συγγραφέας:	[EL] Παπαγιαννόπουλος, Αριστείδης[EN] Papagiannopoulos, Aristeidis Zhao J. Zhang G. [EL] Πίσπας, Στέργιος[EN] Pispas, Stergios Radulescu A.
Εκδότης:	Elsevier Ltd
Ημερομηνία:	2014
Γλώσσα:	Αγγλικά
ISSN:	0014-3057
DOI:	10.1016/j.eurpolymj.2014.04.013
Περίληψη:	The aggregate structure of a thermoresponsive polystyrene-b-poly(N- isopropylacrylamide)-b-polystyrene (PS-PNIPAM-PS) triblock copolymer was investigated as a function of temperature in aqueous solutions by the combination of small angle neutron scattering (SANS) and dynamic/static light scattering (LS). SANS shows that the system consists of spherical intermicellar aggregates which self-assemble into larger clusters either at temperatures below or above the lower critical solution temperature (LCST). Upon the solubility transition of PNIPAM the mass of the clusters increases significantly, whereas their size remains constant and the size of the intermicellar aggregates decreases. This picture is consistent with the LS data where the signature of the two entities in solution is observed. The combination of LS and SANS studies has presented a clearer scenario on the thermoresponsive aggregation behavior of the investigated PS-PNIPAM-PS triblock copolymer.
Τίτλος πηγής δημοσίευσης:	European Polymer Journal
Τόμος/Κεφάλαιο:	56
Τεύχος:	1
Σελίδες:	59-68
Θεματική Κατηγορία:	[EL] Φυσική και θεωρητική χημεία[EN] Physical and theoretical chemistry
Λέξεις-Κλειδιά:	Aggregation Beaucage model Light scattering Small angle neutron scattering Thermoresponsive polymer
Αξιολόγηση από ομότιμους (peer reviewed):	Ναι
Κάτοχος πνευματικών δικαιωμάτων:	© 2014 Elsevier Ltd. All rights reserved.
Σημειώσεις:	European Commission, EC The SANS experiments have been supported by the European Commission under the 7th Framework Programme through the Key Action: Strengthening the European Research Area, Research Infrastructures. Contract No.: 226507 (NMI3).
Εμφανίζεται στις συλλογές:	Ινστιτούτο Θεωρητικής και Φυσικής Χημείας (ΙΘΦΧ) - Επιστημονικό έργο