Dr. sc. nat. Leif Steuernagel

Dr. sc. nat. Leif Tax Nail

Chief Engineer

TU Clausthal Institute of Polymer Materials and Plastics Technology Agricolastr. 6 38678 Clausthal

Functions

chief engineer, industrial contacts

If you have organizational questions concerning the institute or inquiries about cooperations, please contact me.

Study advisor

For questions regarding studies, Dr. Steuernagel

Monday, Tuesday, Thursday and Friday 12.00 to 13.30

and by arrangement personally available.

Registration is requested.

Background

  • 1990 A-levels
  • 1998 Diploma in Chemistry, with Prof. Dr. D. E. Kaufmann, Institute for Organic Chemistry, TU Clausthal.
  • 1998 Military service
  • 2002 Doctorate (Dr. sc. nat.) with the topic "Palladium-catalyzed synthesis of alpha-substituted styrene derivatives for the preparation of oxidation-stable membranes in fuel cells". with Prof. Dr. A. Wokaun, Electrochemistry Laboratory of the Paul Scherrer Institute in Villingen, ETH Zurich.
  • since 2002 research associate at PuK
  • since 2003 senior engineer at PuK and chair for plastics processing
  • 2006 - 2011 Group leader of the FNR Junior Research Group "Natural Fibres
  • 2010 - 2016 Academic Council at PuK
  • since 2017 Head of Department "Renewable Resources

Publications

Book contributions

  • V. Läpple, C. Kammer, L. Steuernagel, "Plastics" (Chapter 9) in "Materials Technology Mechanical Engineering", 6th edition, Verlag Europa-Lehrmittel, Nourney, Vollmer GmbH & Co KG, 2017, ISBN 978-3-8085-5266-7
  • A. El-Sabbagh, A. Ramzy, L. Steuernagel, D. Meiners, G. Ziegmann, "Towards the Flow Pattern Simulation of Cellulosic Fiber Thermoplastic Composites During Injection Molding: Material Characterization" in "Cellulose and Cellulose Composites: Modification, Characterization and Applications", nova science publisher, 2015, ISBN 978-1-63483-553-4

Reviewed publications

  • A. Elsabbagh, A. Ramzy, L. Steuernagel, G. Ziegmann, "Models of Flow Behaviour and Fiber Distribution of Injected Moulded Polypropylene Reinforced with Natural Fiber Composites", Composites B: Engineering 2019, Vol 162, 198-205
  • A. Elsabbagh, T. Attia, A. Ramzy, L. Steuernagel, G. Ziegmann, "Towards Selection Chart of Flame Retardants for Natural Fibre Reinforced Polypropylene Composites", Composites B: Engineering 2018, Vol. 141, 1-8
  • A. Elsabbagh, L. Steering Nail, J. Ring, "Natural Fibre/PA6 composites with flame retardance properties: Extrusion and characterization", Composites B: Engineering 2017, Vol 108, 325-333
  • S. Müller, M. Brand, K. Dröder, L. Steuernagel, D. Meiners "Microscopic Study of the Interfaces in Metal-Plastic Hybrids", Proceedings of Euro Hybrid Materials and Structures 2016, 184-187
  • A. F. K. Malfatti, L. Steuernagel, D. Meiners, "Flax fiber reinforced polypropylene with increased CHARPY impact strength by the use of potential adhesives", Kunststofftechnik/Journal of Plastics Technology 2016, Vol. 12, No. 2, 63-78
  • A. El-Sabbagh, L. Steuernagel, D. Meiners, G. Ziegmann, O. Toepfer, "Optimization of flame retardant content with respect to mechanical properties of natural fiber polymer composites: Case study of polypropylene/flax/aluminum trihydroxide", Polymer Composites 2015, DOI: 10.1002/pc.23530
  • L. Steuernagel, D. Meiners, "Recycling of natural fibre reinforced thermoplastics", Recycling and raw materials 2015, Volume 8, 491-499, ISBN 978-3-944310-20-6, TK Verlag
  • A. C. Olufunke, L. Steuernagel, S. Beuermann, A. E. Temitope, "Synthesis and Characterization of New Polymers from Adenopus breviflorus benth oil, Styrene and Divinyl benzene by Cationic Polymerization", American Journal of Polymer Science & Engineering 2015, Vol. 3, No. 1, Article ID: 201400581
  • A. Ramzy, L. Steuernagel, G. Ziegmann, D. Meiners, "Developing a New Generation of Sisal Composite Fibres for Use in Industrial Applications Composites", Composites Part B 2014, Vol. 66, 287-298
  • A. El-Sabbagh, L. Steuernagel, G. Ziegmann, D. Meiners, O. Toepfer, "Processing Parameters and Characterisation of Flax Fibre Reinforced Engineering Plastic Composites with Flame Retardant Fillers", Composites: Part B: Engineering 2014, Vol. 62, 12-18
  • A. El-Sabbagh, L. Control Nail, D. Meiners, G. Ziegmann, "Effect of Extruder Elements on Fibre Dimensions and Mechanical Properties of Bast Natural Fibre Polypropylene Composites", Journal of Applied Polymer Science 2014, Vol. 131, 40435
  • A. Ramzy, A. El-Sabbagh, L. Steuernagel, G. Ziegmann, D. Meiners, "Rheology of Natural Fibres Thermoplastic Compounds: Flow Length and Fibre Distribution", Journal of Applied Polymer Science 2014, Vol. 131, No. 3, 39861
  • A. El-Sabbagh, L. Control nail, G. Ziegmann, "Ultrasonic testing of natural fibre polymer composites: effect of fibre content, humidity, stress on sound speed and comparison to glass fibre polymer composites", Polymer Bulletin 2013, Vol. 70, 371-390
  • A. El-Sabbagh, L. Steering nail, G. Ziegmann, "Characterisation of flax polypropylene composites using ultrasonic longitudinal sound wave technique", Composites: Part B: Engineering 2013, Vol. 45, 1164-1172
  • A. El-Sabbagh, L. Steering Nail, G. Ziegmann, "Low combustile polypropylene/flax/magnesium hydroxide composites: mechanical, flame retardation characterization and recycling effect", Journal of Reinforced Plastics and Composites 2013, Vol. 32, No. 14, 1030-1043
  • D. Abliz, Y. G. Duan, L. Control Nail, L. Xie, D. C. Li, G. Ziegmann, "Curing Methods for Advanced Polymer Composites - A Review", Polymers and Polymer Composites 2013, Vol. 21, No. 6, 341-348
  • S. Lu, L. Xie, L. Steering nail. G. Ziegmann, "Effects of interfacial enhancing by aldehyde-based surface modification of flax fibers on their polymer composites", Soft Materials 2013, Vol. 11, No. 1, 108-115
  • Y. Xie, A. Krause, H. Militz, L. Steuernagel, C. Mai, "Effects of hydrophobation treatments of wood particles with an amino alkylsiloxane co-oligomer on properties of the ensuing polypropylene composites", Composites: Part A: Applied Science and Manufacturing 2013, Vol. 44, 32-39
  • A. El-Sabbagh, L. Steuernagel, G. Ziegmann, "Improving the impact strength properties of natural fibre thermoplastic composites", Journal of Biobased Materials and Bioenergy 2012, Vol. 6, No. 4, 346-354
  • M. Bassyouni, I. Taha, S. M.-S. Abdel-hamid, L. Control nail, "Physico-mechanical properties of chemically treated polypropylene rice straw bio-composites", Journal of Reinforced Plastics and Composites 2012, Vol. 31, No. 5, 303-312
  • Y. Xie, Z. Xiao, T. Grüneberg, H. Militz, C. A.S. Hill, L. Steuernagel, C. Mai, "Effects of chemical modification of wood particles with glutaraldehydes and 1,3-dimethylol-4,5-dihydroxyethyleneurea on properties of the resulting polypropylene composites", Composites Science and Technology 2010, Vol. 70, 2003-2011
  • L. Xie, T. Grüneberg, L. Steuernagel, G. Ziegmann, H. Militz, "Influence of particle concentration and type on flow, thermal and mechanical property of Wood-Polypropylene Composites", Journal of Reinforced Plastics and Composites 2010, Vol. 29, No. 13, 1940-1951
  • L. Xie, T. Grüneberg, L. Steuernagel, G. Ziegmann, H. Militz, "Improvement of Mechanical Properties of Injection Molded Wood/Polypropylene Composites Parts with Ultrasonic Oscillation Assistant", Materials Science Forum 2010, Vol. 654-656, 2636-2639
  • L. Xie, S. Kirchberg, L. Steuernagel, G. Ziegmann, "A mechanism influencing micro injection molded weld lines of hybrid nano filled polypropylene", Microsystem Technologies 2010, Vol. 16, No. 11, 1855-1859
  • L. Xie, D. Zhu, G. Ziegmann, L. Steuernagel, "Investigation on correlation between cold/hot weld line mechanical properties and micro injection molding processing parameters", Nanotechnology - Life Science, Medicine, Diagnostics, Bio Materials and Composites; Technical Proceedings of the 2010 NSTI Nanotechnology Conference and Expo, Vol. 2, 292-295
  • A. Elsabbagh, L. Steuernagel, G. Ziegmann, "Effect of fiber/matrix chemical modification on the mechanical properties and water absorption of extruded flax/polypropylene composite", Journal of Applied Polymer Science 2009, Vol. 111, No. 5, 2279 - 2289
  • A. El-Sabbagh, L. Control nail, G. Ziegmann, "Processing and modeling of the mechanical behavior of natural fiber thermoplastic composite: Flax/polypropylene", Polymer Composites 2009, Vol. 30, No. 4, 510-519
  • S. Reich, A. ElSabbagh, L. Tax Nail, "Improvement of Fibre-Matrix-Adhesion of Natural Fibres by Chemical Treatment", Macromolecular Symposia 2008, Vol. 262, No. 1, 170-181
  • M. Topp, L. Steuernagel, G. Ziegmann, "Cellulose as a Processing Aid in Polymer Composites", Chemie Ingenieur Technik 2008, Vol. 80, No. 9, 1399-1400
  • I. Taha, L. Steuernagel, G. Ziegmann, "Optimization of the alkali treatment process of date palm fibres for polymeric composites", Composite Interfaces 2007, Vol. 14, No. 7-9, 669-684
  • I. Taha, L. Steuernagel, G. Ziegmann, "Chemical Modification of Date Palm Mesh Fibres for Reinforcement of Polymeric Materials. Part 1: Examination of Different Cleaning Methods", Polymers and Polymer Composites 2006, Vol. 14, No. 8, 767-778
  • L. Control nail, "Synthesis of vinyl compounds to produce oxidation-stable membranes for fuel cell applications", Dissertation No. 15749, ETH Zurich, 2005, Papierflieger Verlag GmbH, ISBN 3-89720-779-6
  • L. Control Nail, D. E. Kaufmann, A. Wokaun, G. G. Scherer, H. P. Brack, "Raman Spectroscopic Study of the Polymerisation of some Substituted Styrenes", Scientific Report 2002, Volume V, General Energy, Paul Scherrer Institute, ISSN 1423-7342, 2003
  • L. Control Nail, D. E. Kaufmann, A. Wokaun, G. G. Scherer, H. P. Brack, "Influence of Nitrogen-Containing Additives on the Radiation-Grafting Process", Scientific Report 2002, Volume V, General Energy, Paul Scherrer Institute, ISSN 1423-7342, 2003
  • J. Huslage, T. Rager, J. Kiefer, L. Steuernagel, G. G. Scherer, "Development of Improved Membrane Electrode Assemblies based on the Radiation-Grafted PSI Membrane", 197th Electrochemical Society Meeting June 2000, Toronto Canada
  • J. Huslage, T. Rager, J. Kiefer, L. Steuernagel, G. G. Scherer, "Improved Membrane Electrode Assemblies for Polymer Electrolyte Fuel Cells Based on Radiation-Grafted Membranes", Micro-Power Sources 2001, ECS Proceedings Part III, K. Zaghib, S. Surampudi (Eds.)
  • L. steering nail, "Environmentally friendly natural fibres in lightweight fibre composite construction", bootswirtschaft 2013, Vol. 57, No. 1, 28-29; Verlag für Bootswirtschaft GmbH, Hamburg, ISSN 0006-7644
  • L. Steuernagel et al., "Art Grip", Visor Special "Polymer Pistols" 2010, Vol. 57, 38-49; VS Medien GmbH, Bad Ems, ISBN 978-3-9812481-8-0
  • G. Ziegmann, J.-N. Doerr, L. Steuernagel, "The natural fiber kickboard - high-performance application through the cooperation between schools, universities and industry", Praxis der Naturwissenschaften - Chemie in der Schule 2007, Vol. 56, No. 2, 26-28; Aulis Verlag Deubner, Cologne and Leipzig, ISSN 1617-5638

Scientific lectures

  • L. Control nail, "Natural Fiber Reinforced Composites: Investigation on Increased Properties Through Adapted Processing", 4th International Conference on Biobased Polymers and Composites, Balatonfüred, Hungary, September 2 - 6, 2018
  • A. Kuzmin, L. Tax Nail, "Natural Fiber Reinforced Composites: In-Situ Determination of Relevant Processing Properties", 4th International Conference on Biobased Polymers and Composites, Balatonfüred, Hungary, September 02 - 06, 2018
  • L. Control nail, "Application potential of natural fibres in plastic composites", PhD course "Surface technology and surface functionalisation", Clausthal University of Technology, 17 January 2018
  • L. Control nail, "Durability of polymer materials", PhD program "Materials and Processes", Clausthal University of Technology, December 14, 2017
  • A. Ramzy, A. ElSabbagh, L. Steering Nail, "Effect of Recycling on Natural Fibre Polypropylene Composites - Crystallization Behaviour and Fibre Length Distribution", 17th European Conference on Composite Materials, Munich, June 28, 2016
  • A. El-Sabbagh, A. Ramzy, L. Steuernagel, D. Meiners, "Flowability and Fiber Content Homogeneity of NaturalFiber Polypropylene Composites in Injection Molding", Polymer Processing Society Conference 2015, Graz, September 24, 2015
  • L. Control nail, "Natural fibre reinforced plastics - effect of injection moulding parameters and use of bonding agents on mechanical properties", 1st Lower Saxony Symposium on Materials Technology, Clausthal-Zellerfeld, 13 February 2015
  • L. Steering Nail, A. El-Sabbagh, "Natural Fibre Reinforced Plastics - Effect of Injection Moulding and Primer on Mechanical Properties", L. Steering Nail, "Fibre-Matrix Adhesion in Natural Fibre Compounds - Chemical Modification", 10th International Symposium "Materials from Renewable Resources", naro.tech Erfurt, 16-17 September 2014
  • L. Steuernagel, "Materials Testing - Characteristic Value Determination for Structural Simulation", FNR Conference "Use of Bio-based Materials in the Automotive Sector 2013", Berlin, 14 November 2013
  • A. El-Sabbagh, A. Ramzy, L. Control Nail, "Notes on Mechanical Elements in Processing Natural fibre Thermoplastic Composites: Extrusion", International Conference on Resource Efficiency in Interorganizational Networks, Göttingen, 13 - 14 November, 2013
  • L. Steering Nail, A. El-Sabbagh, "Natural Fiber Reinforced Thermoplastics - Effect of Injection Parameters on Mechanical Properties of the Compound", International Conference on Resource Efficiency in Interorganizational Networks, Göttingen, 13 - 14 November, 2013
  • A. El-Sabbagh, L. Steuernagel, D. Meiners, "Flax Fibre Reinforced Engineering Plastic Composites with Flame Retardant Fillers: Processing Parameters and Characterisation", 4th Conference on Natural Fibre Composites, Rome, Italy, 17-18 October 2013
  • L. Tax nail, G. Ziegmann, D. Meiners, "Recycling of Fiber reinforced Thermoplastics - Natural Fibers vs. Glass Fibers", Composites Week, Leuven, Belgium, 16 - 20 September 2013
  • A. El-Sabbagh, L. Steering Nail, D. Meiners, "Effect of Twin Screw Extruder Elements on Bast Natural Fibre Polypropylene Composites: Characterisation of Mechanical Properties and Fibre Dimensions", Composites Week, Leuven, Belgium, 16 - 20 September 2013
  • L. Steering nail, "Possibilities and limits of fibre composites based on natural fibres", 33rd Symposium Yachts Design and Construction, Hanseboot, Hamburg, 03 November 2012
  • L. Steuernagel, Lecture "Material Use of Biomass", Block Event "Renewable Energies II", Göttingen, 05. October 2012
  • L. Steuernagel, "Hemp, flax, stinging nettle - Potential of natural fibre use in plastic composites", Research Colloquium of the Research Training Group 1703 "Resource Efficiency in Company Networks - Methods for Operational and Intercompany Planning for the Use of Renewable Resources", Göttingen, 20 September 2012
  • L. Control nail, "Fibre-Matrix Adhesion in Natural Fibre Compounds - Chemical Modification", 9th International Symposium "Materials from Renewable Resources", naro.tech Erfurt, 6 September 2012
  • A. El-Sabbagh, A. Ramzy, L. Steuernagel, G. Ziegmann, V. Siozios, S. Passerini, M. Winter, "Notes on Thermal analysis and Blowholes in Natural Fibre Thermoplastic Composites", The Twentieth Annual International Conference on Composites/ Nano Engineering, ICCE-20 Beijing, China, 22-28 July 2012
  • A. El-Sabbagh, L. Steuernagel, G. Ziegmann, "Flame Retardants for Natural Fibre Polymer Composites", The Twentieth Annual International Conference on Composites/ Nano Engineering, ICCE-20 Beijing, China, 22 - 28 July 2012
  • L. Steering Nail, A. El-Sabbagh, G. Ziegmann, "Fibre-Matrix Adhesion in Thermoplastic Natural Fibre Reinforced Compounds - Physical vs. Chemical Bonding", International Conference on Biobased Polymers and Composites, Siófok, Hungary, 27-31 May 2012
  • L. Control nail, "Natural fibres - new possibilities for setting defined properties in plastic composites", closing event NaWaRo-Nachwuchsgruppen, Berlin, 28 November 2011
  • A. El-Sabbagh, L. Steuernagel, G. Ziegmann, "Improving the impact strength properties of natural fibre thermoplastic composites", 3rd International Conference on Innovative Natural Fibre Composites for Industrial Applications, University of Rome "La Sapienza", Faculty of Engineering, Rome, Italy, 12 - 14 October 2011
  • L. Steering nail, "Effect of chemical natural fibre modification on the property spectrum of natural fibre reinforced plastics" ", SAMPE Symposium 2010, Clausthal, February 24 - 25, 2010
  • A. El-Sabbagh, L. Steuernagel, G. Ziegmann, "Copolymer optimisation for natural fibre thermoplastic composites", SAMPE Symposium 2010, Clausthal, 24 - 25 February 2010
  • S. Reich-Albrecht, L. Steuernagel, G. Ziegmann, "Characterisation of natural fibre fabrics and natural fibre-duromer composites produced by VARI technique", SAMPE Symposium 2010, Clausthal, 24 - 25 February 2010
  • L. Control nail, "Effects of chemical modification on natural fibres and mechanical properties of natural fibre reinforced thermoplastics", naro.tech, 10 September 2009
  • L. steering nail, "Bioplastics - Natural Fibre Reinforced Plastics", oikos lecture series, Clausthal-Zellerfeld, May 2009
  • L. Control nail, "Setting of defined properties in natural fibre-plastic composites", Festkolloquium 10 years PuK, Clausthal-Zellerfeld, 04 November 2008
  • L. Steuernagel, S. Reich, M. Topp, G. Ziegmann, "Chemical modification of natural fibres to improve fibre-matrix adhesion", 6th International Symposium "Materials from renewable resources", naro.tech Erfurt, 6 September 2007
  • I. Taha, A. El-Sabbagh, L. Steuernagel, G. Ziegmann, "Experimental Study and Modelling of Stiffness and Strength of Natural Fibres Thermoplastic Composites", 6th International Symposium "Materials from Renewable Resources", naro.tech Erfurt, 6 September 2007
  • L. Control nail, "Fibre-matrix adhesion and surface modification on natural fibres", Construction materials made of renewable resources, Göttingen, 2006
  • L. Control nail, "Modelling the curing of epoxy resin systems", 9th National Symposium of SAMPE, TU Clausthal, February 2003