Εξειδίκευση τύπου :	Άρθρο σε επιστημονικό περιοδικό
Τίτλος:	pH-Driven Morphological Diversity in Poly[n-Butyl Acrylate-block-(2-(Dimethylamino)Ethyl Acrylate)] Amphiphilic Copolymer Solutions
Δημιουργός/Συγγραφέας:	Chroni A. [EL] Πίσπας, Στέργιος[EN] Pispas, Stergios Forys A. Trzebicka B.
Εκδότης:	Wiley-VCH Verlag
Ημερομηνία:	2019
Γλώσσα:	Αγγλικά
ISSN:	1022-1336
DOI:	10.1002/marc.201900477
Άλλο:	PubMed ID: 31709675
Περίληψη:	Amphiphilic poly[n-butyl acrylate-block-(2-(dimethylamino)ethyl acrylate)] (PnBA-b-PDMAEA) block copolymers are synthesized by the reversible addition fragmentation chain transfer polymerization process. The pH-responsive self-assembly behavior in aqueous media is studied by dynamic, static, and electrophoretic light scattering and cryogenic transmission electron microscopy (Cryo-TEM) at different pHs. In particular, the PnBA40-b-PDMAEA60 copolymer (where subscripts denote %wt composition of the components) shows remarkable morphological transitions in aqueous solutions of varying pH values forming, among others, an unusual and novel hierarchical vesicular morphology, as indicated by Cryo-TEM results. The observed transitions are attributed to synergistic effects involving alterations of the protonation degree of the PDMAEA block, in conjunction with the specific composition of the copolymer and the softness of PnBA blocks, with cumulative drive changes in the packing parameter of the copolymer system and result in the formation of various unexpected morphologies by simple pH changes.
Τίτλος πηγής δημοσίευσης:	Macromolecular Rapid Communications
Τόμος/Κεφάλαιο:	40
Τεύχος:	24
Θεματική Κατηγορία:	[EL] Φυσική και θεωρητική χημεία[EN] Physical and theoretical chemistry
Λέξεις-Κλειδιά:	amphiphilic block copolymers morphological diversities pH-responsive copolymers
Αξιολόγηση από ομότιμους (peer reviewed):	Ναι
Κάτοχος πνευματικών δικαιωμάτων:	© 2019 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim
Εμφανίζεται στις συλλογές:	Ινστιτούτο Θεωρητικής και Φυσικής Χημείας (ΙΘΦΧ) - Επιστημονικό έργο