Εξειδίκευση τύπου :	Άρθρο σε επιστημονικό περιοδικό
Τίτλος:	Self- and co-assembly of amphiphilic gradient polyelectrolyte in aqueous solution: Interaction with oppositely charged ionic surfactant
Δημιουργός/Συγγραφέας:	Uchman M. Hajduová J. Vlassi E. [EL] Πίσπας, Στέργιος[EN] Pispas, Stergios Appavou M.-S. Štěpánek M.
Εκδότης:	Elsevier Ltd
Ημερομηνία:	2015
Γλώσσα:	Αγγλικά
ISSN:	0014-3057
DOI:	10.1016/j.eurpolymj.2015.10.015
Περίληψη:	Association behavior of the biocompatible amphiphilic cationic gradient polyelectrolyte poly[(2-methyl-2-oxazoline)-grad-(2-phenyl-2-oxazoline)-mod-(ethylene imine)] (HPPhMeOx) prepared by partial hydrolysis of the gradient copolymer poly[(2-methyl-2-oxazoline)-grad-(2-phenyl-2-oxazoline)] and the interaction of HPPhMeOx with the anionic surfactant sodium dodecyl sulfate (SDS) in aqueous solutions were investigated by scattering techniques (SANS, DLS) and by atomic force microscopy. SANS measurements revealed that large particles with the hydrodynamic radius of ca. 500 nm observed in HPPhMeOx aqueous solutions by DLS are formed by a network of physically crosslinked compact hydrophobic domains with the mean radius of ca. 10 nm. Upon addition of sodium dodecyl sulfate (SDS), the size of the domains increases at low amounts of the added SDS due to hydrophobic interaction of the single surfactant ions with the aggregates. Further addition of SDS leads to the formation of the co-assembled polyelectrolyte-surfactant complex manifested in SANS by the presence of the correlation peak from the densely packed SDS micelles as well as by partial disruption of the domains.
Τίτλος πηγής δημοσίευσης:	European Polymer Journal
Τόμος/Κεφάλαιο:	73
Σελίδες:	212-221
Θεματική Κατηγορία:	[EL] Φυσική και θεωρητική χημεία[EN] Physical and theoretical chemistry
Λέξεις-Κλειδιά:	Gradient copolymer Poly(oxazoline) Polyelectrolyte surfactant complexes SANS
Αξιολόγηση από ομότιμους (peer reviewed):	Ναι
Κάτοχος πνευματικών δικαιωμάτων:	© 2015 Elsevier Ltd.
Σημειώσεις:	Ministerstvo Školství, Mládeže a Tělovýchovy, MŠMT: LK21302; Grantová Agentura České Republiky, GA ČR: 14-11516S The authors acknowledge the support from the Czech Science Foundation – Czech Republic (grant no. 14-11516S) and from the Ministry of Education, Youth and Sports of the Czech Republic (grant no. LK21302 ). This work is based upon experiments performed at the KWS-2 instrument (grant proposal no. 10296) operated by FRM II at the Heinz Maier-Leibnitz Zentrum (MLZ), Garching, Germany.
Εμφανίζεται στις συλλογές:	Ινστιτούτο Θεωρητικής και Φυσικής Χημείας (ΙΘΦΧ) - Επιστημονικό έργο