Prof. Dr. Christian Rytka,

• Modul Mikro- und Nanotechnologie: Replikation und Beschichtung
• Digitale Produktentwicklung und Verarbeitung
• Betreuung von Bachelor- und Master-Arbeiten
• Co-Betreuung Doktor-Arbeit
• Modul Material und Sustainability: Kunststoffverarbeitung, Nachhaltigkeit, Recycling, Biopolymere und Naturfasern an der Hochschule für Gestaltung und Kunst FHNW im Bachelor of Arts FHNW in Industrial Design
  

Konsortium-Mitglied des NTN Innovation Booster Applied Circular Sustainability

• Recycling von Mischkunststoffen, Hygienemasken, GFK-Abfall und PU
• Entwicklung verschiedener Produkte aus Kunststoffrezyklat
• Entwicklung von Naturfaser-Composites
• 3-D-Druck mit Nanocomposites
• Digitalisierung in der Kunststoffverarbeitung
• Biopolymere: neue Formulierungen, Verarbeitung und Anwendungsentwicklungen

• Video mit Microbez: Pilze statt Plastik | FHNW eMagazin 3/2024
  
• Mit Thermoformen gegen Hüftschäden, Seetaler Bote, 2024
• Rytka C, Krzikalla P, Battaglia S, Volatile Verbindungen in Kunststoffrezyklat, Technische Rundschau, 2024
• Rytka C, Die Vielseitigkeit von Kunststoffen macht es so spannend, bz, 2024
• Fachhochschule Nordwestschweiz FHNW. 26.02.2024. Plastikfrei angeln. 
• Rytka C, Biopolymere – eine nachhaltige Alternative?, Kunststoffextra, 2023
• S, Tiesnes, Rytka, C., 2023, Life cycle assessment, biodegradability and sustainability of biopolymers in the textile Industry, Nachhaltige Kunststoffe in komplexen Anwendungen, Rapperswil, Schweiz; Slide 1 (ost.ch)
  
• Werlen V, Rytka C, Dransfeld C, Brauner C, Michaud V. A multiscale consolidation model for press molding of hybrid textiles into complex geometries. Polym Compos. 2024; 1-19. doi:10.1002/pc.28139
  
• Werlen V., Vocke R., Brauner B., Dransfeld C., Michaud V., Rytka C., A model for the consolidation of hybrid textiles considering air entrapment, dissolution and diffusion, Composites Part A: Applied Science and Manufacturing, Volume 166, 2023, 107413, ISSN 1359-835X, https://doi.org/10.1016/j.compositesa.2022.107413.
• Markstaller R, Krzikalla P, Wegmann S, Rytka C, Sandwichplatten aus rezykliertem Kunststoffmix, Kunststoffextra, 2022
• Voegelin T, Durchbruch im Recycling von GFK-Abfällen, Kunststoffextra, 2021
• Werlen V, Rytka C, Wegmann S, et al. Novel tooling for direct melt impregnation of textile with variotherm injection moulding: Methodology and proof of concept. Journal of Composite Materials. 2022;0(0). doi:10.1177/00219983221130720
  
• Diaz-Rodenas M., Thommen M., Rytka C., Le Canut J.M., Gschwend G., Queloz S., Tsotra P., Roussel J., Weber J.F., Highly conductive polypropylene based composites for bipolar plates for polymer electrolyte membrane fuel cells, Composites Meet Sustainability – Proceedings of the 20th European Conference on Composite Materials, ECCM20. 26-30 June, 2022, Lausanne, Switzerland
• Werlen V., Vocke R., Schwanemann P, Michaud V., Brauner C., Dransfeld C., Rytka C., Consolidation of hybrid textiles for aerospace applications, Composites Meet Sustainability – Proceedings of the 20th European Conference on Composite Materials, ECCM20. 26-30 June, 2022, Lausanne, Switzerland
• Rytka C., Zurück in den biologischen Kreislauf, Kunststoffxtra, 14.April 2022
• Wegmann S.; Rytka C.; Diaz-Rodenas M., Werlen V.; Schneeberger C., Ermanni P., Caglar B., Gomez C., Michaud V., A life cycle analysis of novel lightweight composite processes: Reducing the environmental footprint of automotive structures, Journal of Cleaner Production, Volume 330, 2022, 129808, ISSN 0959-6526,
• Werlen V., Rytka C., Michaud V., A numerical approach to characterize the viscoelastic behaviour of fibre beds and to evaluate the influence of strain deviations on viscoelastic parameter extraction, Composites Part A: Applied Science and Manufacturing, Vol. 143, 2021, 106315, https://doi.org/10.1016/j.compositesa.2021.106315
  
• Bühler R., Thommen M., Le Canut J.-M., Weber J.-F., Rytka C., Tsotra P., Highly conductive polypropylene-based composites for bipolar plates for polymer electrolyte membrane fuel cells. Fuel Cells. 2021,1–9. https://doi.org/10.1002/fuce.201900232
  
• Jakubowsky M., Werder J., Rytka C., Kristiansen M., Neyer A. (2020): Design, manufacturing and experimental validation of a bonded dual component microstructured system for vertical light emission Microsystem Technologies, 26(6), 2087-2093; https://doi.org/10.1007/s00542-020-04767-z
  
• Arexabaleta, L.; Rytka, C.; Walker, L.; Analysis of the manufacturing process of a car bonnet using Compression Resin Transfer Moulding (CRTM). AEMAC, [S.l.], v. 3, n. 3, p. 60-67, july 2019. ISSN 2531-0739.
• Fairhurst A., Thommen M., Rytka C. (2019): Comparison of short and long term creep testing in high performance polymers Polymer Testing 78 105979, https://doi.org/10.1016/j.polymertesting.2019.105979
  
• Rytka, C., (2016) Replication of Functional Polymeric Micro- and Nanostructures, phd-thesis, TU Dortmund, http://dx.doi.org/10.17877/DE290R-17239
  
• Rytka C., Lungershausen J., Kristiansen P. M., Neyer A., (2016) 3D filling simulation  of micro- and nanostructures in comparison to injection moulding trials J. Micromech. Microeng. 26 065018, http://dx.doi.org/10.1088/0960-1317/26/6/065018.
  
• Rytka, C., Opara, N., Andersen, N. K., Kristiansen, P. M. and Neyer, A. (2016), On The Role of Wetting, Structure Width, and Flow Characteristics in Polymer Replication on Micro- and Nanoscale. Macromol. Mater. Eng. 301 597–609 doi: 10.1002/mame.201500350, http://dx.doi.org/10.1002/mame.201500350
  
• Rother, M., Barmettler, J., Reichmuth, A., Araujo, J. V., Rytka, C., Glaied, O., Pieles, U. and Bruns, N. (2015), Self-Sealing and Puncture Resistant Breathable Membranes for Water-Evaporation Applications. Adv. Mater. 27 6620-4 doi:10.1002/adma.201502761,  ttp://onlinelibrary.wiley.com/doi/10.1002/adma.201502761/full
  http://www.materialsviews.com/puncture-proof-and-self-sealing-water-tight-materials/
  
• Rytka C. , Kristiansen. P. M., Neyer A. (2015), Iso- and variothermal injection compression molding of polymer micro- and nanostructures for optical and medical applications. J. Micromech. Microeng., 25 065008. http://iopscience.iop.org/0960-1317/25/6/065008/pdf/0960-1317_25_6_065008.pdf
  
• P.M. Kristiansen, C. Rytka, M.J. Cheung, H. Schift, A. Schleunitz, C. Spreu, H. Solak, Kleinste Strukturen in der Massenfertigung abformen, PlasticsNow!, 2011, 20-21
• C. Rytka, M. Kristiansen, M. Altana, H. Solak, J. Gobrecht, High Fidelity Mass Replication of Nanostructures Poster presentation at Nanotech-date Nordwestschweiz, Baden, Switzerland, March 29, 2011
• C. Rytka, U. Bruggisser, M. Kristiansen, H. Solak, J. Gobrecht, Process Effects on Tool Stability in Nano-Injection Molding, Poster presentation at MNE 2010, Genova, Italy, September 19-22, 2010
• C. Rytka, H. Schift, H. Solak, C. Hofmann, J. Gobrecht, Poster presentation at NNT 2009, San Jose, USA, November 11-13, 2009
• NNT 2009, San Jose, USA, November 11-13, 2009

• CH719093A1 (2023) Verfahren und Vorrichtung zur Herstellung einer geschäumten Polymercompositplatte aus Misch-Kunststoffabfall. BOXS AG, Rytka, C., Markstaller, R.
• EP4047156A1 / CH718363A1 (2022) Bordbrett und Verbindungsstuck aus Kunststoff, ProCon-BTW GmbH, Rytka, C., Maurer, C., Botor, D., Zeltner, R., Tscharner, B., Tscharner, R.
• WO2021094996A1; (2021) Impregnated thread, ribbed thin-walled composite product comprising such an impregnated thread, and method for manufacturing this thread and this composite product, Bcomp SA, Rytka, C., Rion, J., Aebischer, R., Masania, K., Botor, D., Jerinic, M.
• DE102011087404-A1; WO2013079327-A2; WO2013079327-A3; AU2012344173-A1; EP2785278-A2; US2014296979-A1; EP2862545-A1, 2015, System for controlled loading of reconstructed or restored ligament i.e. front cruciate ligament, into knee joint of e.g. human body, has elastomer body guiding interaction of body with anchoring and connecting elements at elastic effect, Mathys Bettlach Ag; Delfosse D., De Cesaris A., Dransfeld C., Rytka C.
• WO2012174673-A1, 2012, CH705159-A2 (2012); EP2723289-A1 (2014); US2014289986-A1, 2014, Cotton swab, useful e.g. for cleaning ears and eyes and for cosmetics, comprises rod-shaped grip body, and cotton body arranged on free end of the grip body, where the grip body is a biodegradable extrusion body and contains natural fibers, Roweg Holding Ag, Haeni B., Rytka C., Petignat G.
• EP2871210-A1, 2015, Composition useful for composite material to produce plastic moldings as injection moldings, comprises cellulose fibers, matrix made of thermoplastic material, and adhesion promoter for embedding cellulose fibers in matrix, Rotho Kunst Ag, Rytka C.
• US2010297373-A1 (2010); US8309643-B2 (2012), New polyamide molding compound comprising transparent polyamide, fibrous reinforcing material and particulate filler, useful in injection molding for producing molded article such as fiber, film, pipe and hollow body, Ems-Chemie Ag, Thullen H.; Rytka C.; Buehler F.; Hala R.
• Ems-Chemie Ag, Thullen H.; Rytka C.; Buehler F.; Hala R.

• Wagenschein-Tagung 2024, Verpackungen: Ein Spiegelbild unserer schnellen Konsumgesellschaft, oder doch nur ein sinnvoller Schutz?
• Wagenschein-Tagung 2023, «Kunststoff: Gut, böse oder doch nur ein Material?»
  
• KATZ Symposium 2021: Lösungen für anspruchsvolle Recycling-Aufgaben
• Composites in der Fahrrad-Industrie, CC Schweiz, 2017: Neue Composite-Werkstoffe und Herstellverfahren für die Bike Industrie
• PRN (Polymer Replication on Nanoscale) 2017, Fraunhofer IPT, Germany: Replication of two-sided optical micro- and nanostructures with high accuracy
• Technologietagung der Kunststofftechnik 2016, Fribourg: Filling simulation of micro- and nanostructures in comparison to iso- and variothermal injection moulding trials
• PRN (Polymer Replication on Nanoscale) 2015, DTU, Denmark: Multi-scale 3D filling simulation of micro- and nanostructures in comparison to real injection moulding Trials
• ICPPC (International Conference on Polymer Processing and Characterization ) 2014, Mahatma Gandhi University, India: High-quality Replication of Micro- and Nanostructures with variothermal injection compression molding, roll and hot embossing
• NTN Workshop Innovative Oberflächen 2014, Inselspital Bern: Manufacturing and replication technologies of functional micro- and nanostructures
• SNC (Swiss Nano Convention) 2014, Windisch, Switzerland: Mass replication of nanopatterns in polymers
• PRN (Polymer Replication on Nanoscale) 2014, DTU, Denmark: High-quality Replication of 3D-nanostructures with variothermal injection compression molding

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