TY - GEN A1 - Müller, Felix A1 - Torger, Bernhard A1 - Allertz, Peter J. A1 - Jähnichen, Klaus A1 - Keßler, Stefan A1 - Müller, Martin A1 - Simon, Frank A1 - Salchert, Katrin A1 - Mäurer, Haike A1 - Pospiech, Doris T1 - Multifunctional crosslinkable itaconic acid copolymers for enzyme immobilization T2 - European Polymer Journal N2 - UV-Crosslinkable itaconic copolymers are developed to provide new multifunctional materials for coatings which combine crosslinkable functionalities and the possibility to immobilize enzymes. The polymer-immobilized enzymes were used for water treatment to decompose persistent organic molecules. Introduction of suitable comonomers allows tailoring the mechanical and chemical properties for special applications. Copolymers containing MMA and itaconic anhydride were chosen because of the formation of long-term stable anhydride functionalities. These anhydride functionalities are employed to attach enzymes covalently. 4-Benzoylphenyl methacrylate is used as comonomer for UV-initiated crosslinking. Terpolymers are successfully obtained by radical copolymerization in solution. The copolymers are compared to poly(ethylene-alt-maleic anhydride) [P(EMA)] often used with respect to enzyme immobilization, activity and hydrolytic stability. The hydrolysis stability of the copolymers against water is studied by ATR-FTIR spectroscopy. Thin films are prepared on glass substrates in a layer-by-layer procedure by spin-coating. The layer formation is monitored by ATR-FTIR spectroscopy. UV-crosslinking of the copolymer films is performed taking the optimal irradiation dose that avoids polymer degradation. ATR-FTIR spectroscopy verifies the coupling reaction between amino groups of the enzyme and the anhydride groups on the surface of the crosslinked polymer film. The syringaldazine (4-hydroxy-3,5-dimethoxybenzaldehyde azine) test and 2,2´-azino-bis(3-ethylbenzothiazoline-6-sulphonic acid) (ABTS) assay demonstrate that the immobilized enzymes maintain their activities. The functional copolymers showed a significant effect in reduction of persistent organic pollutants in contaminated waste water. KW - ATR-FTIR spectroscopy KW - Crosslinking KW - Enzyme-immobilization KW - Itaconc acid KW - Methacrylate copolymer Y1 - 2018 U6 - https://doi.org/10.1016/j.eurpolymj.2018.03.014 VL - 102 SP - 47 EP - 55 ER - TY - GEN A1 - Müller, Felix A1 - Nolte, Jörg A1 - Schlaefer, A. ED - Rolim, Jose T1 - CLIX - A Hybrid Programming Environment for Distributed Objects and Distributed Shared Memory T2 - Parallel and distributed processing, 15 IPDPS 2000 workshops, Cancun, Mexico, May 1 - 5, 2000 Y1 - 2000 SN - 3-540-67442-X SP - 285 EP - 292 PB - Springer CY - Berlin ER - TY - CHAP A1 - Müller, Felix A1 - Gnauck, Albrecht A1 - Wenkel, Karl-Otto A1 - Schubert, Hendrik A1 - Bredemeier, Michael T1 - Theoretical Demands for Long-Term Ecological Research and the Management of Long-Term Data Sets Y1 - 2010 ER - TY - GEN A1 - Fongwa, Ernest Anye A1 - Gnauck, Albrecht A1 - Müller, Felix A1 - Petschick, Michael T1 - Business Development for Preserving Ecosystem Services Y1 - 2011 ER - TY - GEN A1 - Staron, Peter A1 - Beckmann, Felix A1 - Lippmann, Thomas A1 - Stark, Andreas A1 - Oehring, Michael A1 - Pyczak, Florian A1 - Salgado, Mario A1 - Hort, Norbert A1 - Eckerlebe, Horst A1 - Kainer, Karl Ulrich A1 - Müller, Martin A1 - Schreyer, Andreas T1 - In situ studies of light metals with synchrotron radiation and neutrons T2 - Materials Science Forum Y1 - 2011 SN - 1662-9752 IS - 690 SP - 192 EP - 197 ER - TY - GEN A1 - Grothe, Oliver A1 - Müller, Christoph A1 - Müsgens, Felix T1 - Modellierung von Energiepreisrisiken durch Bindefristen bei öffentlichen Ausschreibungen T2 - Zeitschrift für Energie, Markt und Wettbewerb Y1 - 2006 IS - 6 SP - 59 EP - 62 ER - TY - CHAP A1 - Kleber, Arno A1 - Terhorst, Birgit A1 - Hülle, Daniela A1 - Leopold, Matthias A1 - Müller, S. A1 - Raab, Thomas A1 - Sauer, Daniela A1 - Scholten, Thomas A1 - Dietze, Michael A1 - Felix-Henningsen, Peter A1 - Heinrich, J. A1 - Spies, E. D. A1 - Thiemeyer, H. ED - Kleber, Arno ED - Terhorst, Birgit T1 - Subdued Mountains of Central Europe T2 - Mid-Latitude Slope Deposits (Cover Beds) N2 - Slope deposits, which veil entire slopes or large parts of them in a rather uniform manner (cover beds), are ubiquitous in the subdued mountains of Central Europe. Here we provide an overview of the current state of knowledge on these deposits. The Central European cover beds are divided into (1) the upper layer that is ubiquitously distributed and displays a relatively constant thickness; (2) the intermediate layer the distribution of which is mainly restricted to flat relief, to slope depressions, and to lee-ward facing slopes; and (3) the basal layer, which is rather widespread again. Both the upper and intermediate layer contain intermixed loess, whereas the basal layer is free of loess and typically has a high bulk density. Aside from the loess content, the composition of the layers differs, reflecting varying portions of crushed and chemically weathered rock allocated from up-slope. This causes notable diversity depending on bedrock and, thus, induces remarkable regional differences. Cover beds were mainly formed by periglacial gelifluction. The upper layer formed in the Late Glacial possibly during several short episodes of activity. In contrast, the underlying layers may be diachronous; nevertheless, they display recurring vertical sequences. This is probably due to the fact that loess-free layers usually could not deposit as long as there was loess in the environs, which may have been inherited from older deposits. Thus, the last phase of surface wash, during which older loess was removed, determines the age of the lower layers. Y1 - 2013 SN - 978-0-444-53118-6 U6 - https://doi.org/10.1016/B978-0-444-53118-6.00002-7 SP - 9 EP - 93 PB - Elsevier CY - Oxford ER - TY - GEN A1 - Müller, Felix Claus A1 - Kleibert, Jana Maria A1 - Ibert, Oliver T1 - Hiding in the Spotlight: Commodifying Nature and the Geographies of Dissociation in the Fur Fashion Complex T2 - Economic Geography Y1 - 2021 U6 - https://doi.org/10.1080/00130095.2020.1858713 SN - 0013-0095 SN - 1944-8287 VL - 97 IS - 1 SP - 89 EP - 112 ER - TY - CHAP A1 - Fongwa, Ernest Anye A1 - Petschick, Michael A1 - Gnauck, Albrecht A1 - Müller, Felix T1 - Decision support system for balancing ecosystem services at the landscape scale: Petri nets modelling application T2 - Proceedings Implementation of Landscape Ecological Knowledge in Practice, 1st IALE-Europe Thematic Symposium, 16-19 September 2010 Y1 - 2010 SN - 978-83-232-2154-8 SP - 241 EP - 252 PB - Wydawnictwo Naukowe UAM CY - Poznan ER - TY - CHAP A1 - Fongwa, Ernest Anye A1 - Gnauck, Albrecht A1 - Müller, Felix T1 - Modelling Ecosystem Services at the Landscape Scale: A Case Study of UNESCO Biosphere Reserve Spreewald T2 - Modellierung und Simulation von Ökosystemen : Workshop Kölpinsee 2010 Y1 - 2011 SN - 978-3-8440-0499-1 SP - 233 EP - 257 PB - Shaker CY - Aachen ET - 1. Auflage ER - TY - CHAP A1 - Fongwa, Ernest Anye A1 - Gnauck, Albrecht A1 - Müller, Felix T1 - A Hybrid Model for Sustainable Development of Ecosystem Services T2 - Modellierung und Simulation von Ökosystemen : Workshop Kölpinsee 2009 Y1 - 2010 SN - 978-3-8322-9410-6 SP - 204 EP - 223 PB - Shaker CY - Aachen ET - 1. Auflage ER - TY - CHAP A1 - Fongwa, Ernest Anye A1 - Petschick, Michael A1 - Gnauck, Albrecht A1 - Müller, Felix ED - Mizgajski, Andrzej ED - Macias, Andrzej T1 - Measuring the Rate of Changes in Ecosystem Services at the Landscape Scale: Towards decision support systems for improving the ecological performance T2 - Implementing of Landscape Ecological Knowledge in Practice, 1st IALE-EuropeThematic Symposium, 16 - 19 September 2010 Y1 - 2010 SN - 978-83-232-2154-8 PB - Wydawnictwo Naukowe UAM CY - Poznan ER - TY - RPRT A1 - Fongwa, Ernest Anye A1 - Müller, Felix T1 - A Unified Modeling System for Estimating the Value of Ecosystem Services Y1 - 2010 UR - http://www.eoearth.org/article/unified_modelling_system_for_estimating_the_value_of_ecosystem_services ER - TY - GEN A1 - Hannan, Azmin Nasrin A1 - Seidlitz, Holger A1 - Hartung, David A1 - Kuke, Felix A1 - Ambrosio, Marcello A1 - Müller, Marco T1 - Sustainability and Circular Economy in Carbon Fiber-Reinforced Plastics T2 - Materials Circular Economy N2 - Carbon fiber-reinforced plastic (CFRP) components are known for their exceptional resilience and ultra-lightweight nature, making them the preferred choice for applications requiring high mechanical loads with minimal weight. However, the intricate and anisotropic structure of CFRP components poses challenges, resulting in expensive repairs and testing. This complexity also leads to increased waste generation. Yet, innovative recycling processes offer a solution by reintegrating carbon components into a closed material cycle, promoting sustainability and circular economy principles. This work focuses on recycled CFs (rCFs) obtained through a continuous recycling method for CFRP primary recyclate from composite pressure vessel. Furthermore, re-purposing of the separated matrix material for secondary energy sources makes the process, a 100% recycling route. This closed-loop approach addresses conventional pyrolysis challenges and contributes to more efficient utilization of CFRP waste components. rCF and recycled polyethylene terephthalate (rPET) polymers were compounded through an extrusion process. Test specimens were then fabricated according to standard test norms to evaluate the resulting tensile and bending properties. The tensile and flexural modulus of the rCF-rPET obtained are 6.80 and 4.99 GPa, respectively. The need for enhancing the quality of rCF is apparent. Suggestive and potential implications and the marketability of rCF-rPET compounds are also discussed. KW - Sustainability KW - Circular Economy KW - Carbon Fiber-Reinforced Plastics Y1 - 2024 U6 - https://doi.org/10.1007/s42824-024-00111-2 SN - 2524-8146 VL - 6 IS - 1 PB - Springer Science and Business Media LLC ER -