Εξειδίκευση τύπου :	Άρθρο σε επιστημονικό περιοδικό
Τίτλος:	Thin films of PS/PS-b-pnipam and ps/pnipam polymer blends with tunable wettability
Δημιουργός/Συγγραφέας:	Kanidi M. [EL] Παπαγιαννόπουλος, Αριστείδης[EN] Papagiannopoulos, Aristeidis Skandalis A. [EL] Κάνδυλα, Μαρία[EN] Kandyla, Maria [EL] Πίσπας, Στέργιος[EN] Pispas, Stergios
Εκδότης:	John Wiley and Sons Inc.
Ημερομηνία:	2019
Γλώσσα:	Αγγλικά
ISSN:	0887-6266
DOI:	10.1002/polb.24822
Περίληψη:	We developed thin films of blends of polystyrene (PS) with the thermoresponsive polymer poly(N-isopropylacrylamide) (PNIPAM) (PS/PNIPAM) and its diblock copolymer polystyrene-b-poly(N-isopropylacrylamide) (PS/PS-b-PNIPAM) in different blend ratios, and we study their surface morphology and thermoresponsive wetting behavior. The blends of PS/PNIPAM and PS/PS-b-PNIPAM are spin-casted on flat silicon surfaces with various drying conditions. The surface morphology of the films depends on the blend ratio and the drying conditions. The PS/PS-b-PNIPAM films do not show an increase in their water contact angles with temperature, as it is expected by the presence of the PNIPAM block. All PS/PNIPAM films show an increase in the water contact angle above the lower critical solution temperature of PNIPAM, which depends on the ratio of PNIPAM in the blend and is insensitive to the drying conditions of the films. The difference between the wetting behavior of PS/PS-b-PNIPAM and PS/PNIPAM films is due to the arrangement of the PNIPAM chains in the film.
Τίτλος πηγής δημοσίευσης:	Journal of Polymer Science, Part B: Polymer Physics
Τόμος/Κεφάλαιο:	57
Τεύχος:	11
Σελίδες:	670-679
Θεματική Κατηγορία:	[EL] Φυσική και θεωρητική χημεία[EN] Physical and theoretical chemistry [EL] Φασματοσκοπία[EN] Spectroscopy
Λέξεις-Κλειδιά:	blends diblock copolymer PNIPAM PS-b-PNIPAM spin coating thermoresponsive wettability thin films
Αξιολόγηση από ομότιμους (peer reviewed):	Ναι
Κάτοχος πνευματικών δικαιωμάτων:	© 2019 Wiley Periodicals, Inc.
Όροι και προϋποθέσεις δικαιωμάτων:	All Open Access, Green
Σημειώσεις:	European Commission, EC; General Secretariat for Research and Technology, GSRT; European Regional Development Fund, FEDER; Hellenic Foundation for Research and Innovation, ΕΛ.ΙΔ.Ε.Κ We acknowledge support of this work by the project “Advanced Materials and Devices” (MIS 5002409) which is implemented under the “Action for the Strategic Development on the Research and Technological Sector”, funded by the Operational Program “Competitiveness, Entrepreneurship and Innovation” (NSRF 2014-2020) and co-financed by Greece and the European Union (European Regional Development Fund). M. Kanidi acknowledges support through a Ph.D. fellowship by the General Secretariat for Research and Technology (GSRT) and the Hellenic Foundation for Research and Innovation (HFRI). We also thank Dr. G. D. Chryssikos and Dr. E. Siranidi for their help with Raman spectroscopy measurements and Dr. C. Chochos for his help with SEM measurements.
Εμφανίζεται στις συλλογές:	Ινστιτούτο Θεωρητικής και Φυσικής Χημείας (ΙΘΦΧ) - Επιστημονικό έργο