Kinetics of phase-selective distribution of hybrid filler systems in heterogenous rubber blends and their synergistic effects on the physical properties

• Applicant: Professor Dr.-Ing. Sven Wießner
• Subject Area: Polymeric and Biogenic Materials and Derived Composites ; Plastics Engineering ; Materials in Sintering Processes and Generative Manufacturing Processes ; Polymer Materials
• Term: from 2019 to 2023
• Project identifier: Deutsche Forschungsgemeinschaft (DFG) - Project number 417949845

• Final Report Year: 2024

Final Report Abstract

In the present research project, self-healing composites based on rubber blends filled with a hybrid filler system (HFS) using imidazole or imidazole mixture were prepared. The project focused on the further development of the wetting concept, which can quantitatively describe the selective wetting and phase-specific localization of HFS in rubber blends during mixing. In combination with the Z-model for predicting the selective filler wetting in the thermodynamic equilibrium state, it was possible to obtain a comprehensive picture of the exchange process between the bonded layer of the rubber components and thus the kinetics of the migration of the individual fillers of the HFS in rubber blends during the mixing process. On the basis of extensive investigations of the material and technological parameters influencing the wetting, dispersion and localization processes of HFS in the blend phases in the mixing process of the rubber blends, an important step was obtained with regard to the correlation between selective HFS wetting, mixing technology and application properties. This opens up possibilities for targeted control of the mixing behavior of the nanocomposites. The main results have been published in 6 referred journal papers and one book chapter.

Publications

• A new method for quantification of the phase selective localization of hybrid fillers in rubber blends. Express Polymer Letters, 15(5), 404-417.
  Le, H. H.; Hoang, X. T.; Reuter, U.; Janke, A.; Das, A. & Wiessner, S.
  
• Effect of phase selective wetting of hybrid filler on the self-healing properties of rubber blends. Polymer, 231, 124146.
  Le, Hai H.; Hoang, Tung X.; Schoene, Erik; Reuter, Uta; Stöckelhuber, Klaus Werner; Mandal, Subhradeep; Dhakal, Kedar N.; Adhikari, Rameshwar & Wiessner, Sven
  
• Einfluss der Lokalisierung von Hybridfüllstoffen auf die Selbstheilungseigenschaften von Brombutyl-Kautschuk (BIIR) / Naturkautschuk (NR) Blends. Technomer 2021, 27. Fachtagung über Verarbeitung und Anwendung von Polymeren, Technische Universität Chemnitz. 4. - 5. November
  Hoang X. T. Le H. H. & Wiessner S.
  
• Property of self-healable brominated isobutene-isoprene rubber and natural rubber blends (BIIR/NR) filled with hybrid filler silica and carbon black. 36th International Conference of the Polymer Processing Society, September 26th -29th, Montreal, Canada
  Hoang X. T. Le H. H. & Wiessner S.
  
• Effects of filler localization on property of self-healable rubber blends filled with hybrid filler. 37th International Conference of the Polymer Processing Society (PPS-37) April 11th-15th, Fukuoka, Japan
  Hoang X. T. Le H. H. & Wiessner S.
  
• Electrically conductive and piezoresistive polymer nanocomposites using multiwalled carbon nanotubes in a flexible copolyester: Spectroscopic, morphological, mechanical and electrical properties. Nano-Structures & Nano-Objects, 29, 100806.
  Dhakal, Kedar Nath; Khanal, Santosh; Krause, Beate; Lach, Ralf; Grellmann, Wolfgang; Le, Hai Hong; Das, Amit; Wießner, Sven; Heinrich, Gert; Pionteck, Jürgen & Adhikari, Rameshwar
  
• New test strategy to determine the effect of epoxy groups and non-rubber components on the phase-selective wetting of carbon black in natural rubber compounds. 14th Fall Rubber Colloquium (KHK) 8. – 10. November, Hannover
  Hoang X. T. Le H. H., Haider S. B. & Wiessner S.
  
• Phase Selective Wetting of Carbon Nanotubes (CNTs) and Their Hybrid Filler System in Natural Rubber Blends. Handbook of Carbon Nanotubes, 835-875. Springer International Publishing.
  Le, Hong Hai; Hoang, Xuan Tung & Wiessner, Sven
  
• Transformation of Epoxidized Natural Rubber into Ionomers by Grafting of 1H-Imidazolium Ion and Development of a Dynamic Reversible Network. ACS Applied Polymer Materials, 4(9), 6612-6622.
  Mandal, Subhradeep; Hait, Sakrit; Simon, Frank; Ghosh, Anik; Scheler, Ulrich; Arief, Injamamul; Tada, Toshio; Hoang, Tung X.; Wießner, Sven; Heinrich, Gert & Das, Amit
  
• A new testing strategy based on the wetting concept for characterizing rubber-filler interaction in rubber compounds and its application to the study of the influence of epoxy groups and non-rubber components on rubber-filler interaction in natural rubber compounds. Express Polymer Letters, 17(5), 527-545.
  Le, Hai Hong; Hoang, Tung Xuan; Haider, Syed Bilal; Subhradeep, Mandal; Reuter, Uta; Dhakal, Kedar; Adhikari, Rameshwar; Reincke, Katrin; Saleah, Subhan & Wiessner, Sven
  
• Mechanical and electrical properties of self-healable rubber blends under influence of imidazole mixture and selective wetting of hybrid filler. Express Polymer Letters, 18(4), 420-440.
  Hong, Hai Le; Xuan, Tung Hoang; Sai, Anjaneya Varma Kosuri Yashwanth; Mandal, Subhradeep; Dhakal, Kedar Nath; Adhikari, Rameshwar; Langer, Beate & Wiessner, Sven