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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 | Publisher: | ELSEVIER SCIENCE SA | Source: | 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. | Keywords: | Field-effect sensor; (Bio)degradation; Poly(D,L-lactic acid); Degradation monitoring; Impedance spectroscopy;field-effect sensor; (bio)degradation; poly(d,l-lactic acid); degradation monitoring; impedance spectroscopy | Document URI: | http://hdl.handle.net/1942/18131 | e-ISSN: | 0925-4005 | DOI: | 10.1016/j.snb.2014.10.058 | ISI #: | 000345895400010 | Rights: | © 2014 Elsevier B.V. All rights reserved. | Category: | A1 | Type: | Journal Contribution | Validations: | ecoom 2016 |
Appears in Collections: | Research publications |
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