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Please use this identifier to cite or link to this item: http://hdl.handle.net/1942/18131

Title: An application of field-effect sensors for in-situ monitoring of degradation of biopolymers
Authors: Schusser, S.
Poghossian, A.
Baecker, M.
Krischer, M.
Leinhos, M.
WAGNER, Patrick
Schoening, M. J.
Issue Date: 2015
Citation: SENSORS AND ACTUATORS B-CHEMICAL, 207, p. 954-959
Abstract: The characterization of the degradation kinetics of biodegradable polymers is mandatory with regard to their proper application. In the present work, polymer-modified electrolyte-insulator-semiconductor (PMEIS) field-effect sensors have been applied for in-situ monitoring of the pH-dependent degradation kinetics of the commercially available biopolymer poly(D,L-lactic acid) (PDLLA) in buffer solutions from pH 3 to pH 13. PDLLA films of 500 nm thickness were deposited on the surface of an Al-p-Si-SiO2-Ta2O5 structure from a polymer solution by means of spin-coating method. The PMEIS sensor is, in principle, capable to detect any changes in bulk, surface and interface properties of the polymer induced by degradation processes. A faster degradation has been observed for PDLLA films exposed to alkaline solutions (pH 9, pH 11 and pH 13). (C) 2014 Elsevier B.V. All rights reserved.
Notes: [Schusser, S.; Poghossian, A.; Baecker, M.; Krischer, M.; Leinhos, M.; Schoening, M. J.] Aachen Univ Appl Sci, Inst Nano & Biotechnol, D-52428 Julich, Germany. [Schusser, S.; Poghossian, A.; Baecker, M.; Leinhos, M.; Schoening, M. J.] Forschungszentrum Julich, Peter Grunberg Inst PGI 8, D-52525 Julich, Germany. [Wagner, P.] Hasselt Univ, Inst Mat Res, B-3590 Diepenbeek, Belgium.
URI: http://hdl.handle.net/1942/18131
DOI: 10.1016/j.snb.2014.10.058
ISI #: 000345895400010
ISSN: 0925-4005
Category: A1
Type: Journal Contribution
Validation: ecoom, 2016
Appears in Collections: Research publications

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