Εξειδίκευση τύπου :	Άρθρο σε επιστημονικό περιοδικό
Τίτλος:	Thermoresponsive behavior of micellar aggregates from end-functionalized P: N BA- b -PNIPAM-COOH block copolymers and their complexes with lysozyme
Δημιουργός/Συγγραφέας:	[EL] Παπαγιαννόπουλος, Αριστείδης[EN] Papagiannopoulos, Aristeidis Meristoudi A. [EL] Πίσπας, Στέργιος[EN] Pispas, Stergios Keiderling U.
Εκδότης:	Royal Society of Chemistry
Ημερομηνία:	2016
Γλώσσα:	Αγγλικά
ISSN:	1744-683X
DOI:	10.1039/c6sm00976j
Άλλο:	PubMed ID: 27426110
Περίληψη:	The temperature response of micellar aggregates of poly(n-butyl acrylate)-b-poly(N-isopropylacrylamide)-carboxylic acid (PnBA-b-PNIPAM-COOH) end-functionalized diblock copolymers in aqueous solutions is investigated by small angle neutron scattering and light scattering techniques. The particular micellar aggregates present -COOH groups at their surface due to the molecular architecture of the block copolymer chains. Above the critical solution temperature micellar aggregation depends on the initial solution concentration, while at the highest polymer content intermicellar correlations are observed as a hard-sphere interaction intensity peak. Addition of lysozyme induces this morphological transition even at low concentrations. The scattering profiles are consistent with lysozyme accumulating in the vicinity of the micellar cores, a finding that is supported by measurements in lysozyme contrast matched solvent. Upon temperature increase negatively charged units are exposed to the surface of the aggregates during thermal transition which is a stabilizing force against the phase separating coil-to-globule transition of poly(N-isopropylacrylamide) (PNIPAM).
Τίτλος πηγής δημοσίευσης:	Soft Matter
Τόμος/Κεφάλαιο:	12
Τεύχος:	31
Σελίδες:	6547-6556
Θεματική Κατηγορία:	[EL] Φυσική και θεωρητική χημεία[EN] Physical and theoretical chemistry
Αξιολόγηση από ομότιμους (peer reviewed):	Ναι
Κάτοχος πνευματικών δικαιωμάτων:	© 2016 The Royal Society of Chemistry.
Όροι και προϋποθέσεις δικαιωμάτων:	All Open Access, Green
Εμφανίζεται στις συλλογές:	Ινστιτούτο Θεωρητικής και Φυσικής Χημείας (ΙΘΦΧ) - Επιστημονικό έργο