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Article type: Research Article
Authors: Zhou, Shuoa; b | Xu, Xuna; c | Ma, Nana; c; d | Jung, Friedricha; c | Lendlein, Andreasa; b; c; d; *
Affiliations: [a] Institute of Active Polymers, Helmholtz-Zentrum Hereon, Teltow, Germany | [b] Institute of Chemistry, University of Potsdam, Potsdam, Germany | [c] Berlin-Brandenburg Centre for Regenerative Therapies, Helmholtz-Zentrum Hereon, Teltow, Germany | [d] Institute of Chemistry and Biochemistry, Freie Universität Berlin, Berlin, Germany
Correspondence: [*] Corresponding author: Prof. Dr. Andreas Lendlein, Institute of Active Polymers, Helmholtz-Zentrum Hereon, Kantstr. 55, 14513 Teltow, Germany. E-mail: [email protected].
Abstract: Sulfated biomolecules are known to influence numerous biological processes in all living organisms. Particularly, they contribute to prevent and inhibit the hypercoagulation condition. The failure of polymeric implants and blood contacting devices is often related to hypercoagulation and microbial contamination. Here, bioactive sulfated biomacromolecules are mimicked by sulfation of poly(glycerol glycidyl ether) (polyGGE) films. Autoclaving, gamma-ray irradiation and ethylene oxide (EtO) gas sterilization techniques were applied to functionalized materials. The sulfate group density and hydrophilicity of sulfated polymers were decreased while chain mobility and thermal degradation were enhanced post autoclaving when compared to those after EtO sterilization. These results suggest that a quality control after sterilization is mandatory to ensure the amount and functionality of functionalized groups are retained.
Keywords: Sulfated polymer, sulfation, sterilization, ethylene oxide
DOI: 10.3233/CH-211241
Journal: Clinical Hemorheology and Microcirculation, vol. 79, no. 4, pp. 597-608, 2021
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