Εξειδίκευση τύπου :	Κεφάλαιο βιβλίου
Τίτλος:	Complexes of poly[sodium(sulfamate/carboxylate)isoprene] with dodecyltrimethylammonium bromide: Nanoparticles with tunable aggregation
Δημιουργός/Συγγραφέας:	[EL] Παπαγιαννόπουλος, Αριστείδης[EN] Papagiannopoulos, Aristeidis [EL] Πίσπας, Στέργιος[EN] Pispas, Stergios
Εκδότης:	Nova Science Publishers, Inc.
Ημερομηνία:	2016
Γλώσσα:	Αγγλικά
ISBN:	9781634858649; 9781634858366
Περίληψη:	We present the complexation of the linear, inherently hydrophobic, anionic polyelectrolyte poly[sodium(sulfamate/carboxylate)isoprene] (SCPI) with the cationic surfactant dodecyltrimethylammonium bromide (DTMAB), studied mainly by light scattering methods. At low surfactant concentrations the polyelectrolyte aggregates (already formed in surfactant-free solutions) shrink, whereas at higher surfactant concentrations secondary aggregation takes place leading to a strong increase in scattered intensity and a twofold increase in size. The charge of the aggregates decreases abruptly in the first complexation regime while more mildly in the second one as observed by ζ- potential measurements in electrophoretic light scattering. The resulting polyelectrolyte-surfactant complexes are fairly monodisperse (compared to the initial polyelectrolyte aggregates) and they contain well-defined hydrophobic domains (proof of complex coacervate phases) as shown by pyrene fluorescence probing. The system under study is proved to have tunable complexation properties not only by its dependence on surfactant content, but also by the effect of dilution upon already formed complexes, which shows a gradual decrease in the hydrophobic domains and a variation of the complexes size.
Τίτλος πηγής δημοσίευσης:	Polyelectrolytes: Theory, Properties and Applications
Σελίδες:	87-100
Θεματική Κατηγορία:	[EL] Φυσική και θεωρητική χημεία[EN] Physical and theoretical chemistry
Αξιολόγηση από ομότιμους (peer reviewed):	Ναι
Κάτοχος πνευματικών δικαιωμάτων:	© 2016 Nova Science Publishers, Inc.
Εμφανίζεται στις συλλογές:	Ινστιτούτο Θεωρητικής και Φυσικής Χημείας (ΙΘΦΧ) - Επιστημονικό έργο