Rok 2024

• The Input of Nanoclays to the Synergistic Flammability Reduction in Flexible Foamed Polyurethane/Ground Tire Rubber Composites

  Publikacja

  • A. Hejna
  • P. Kosmela
  • A. Olszewski
  • W. Żukowska

  - Materials - Rok 2024

  Currently, postulated trends and law regulations tend to direct polymer technology toward sustainability and environmentally friendly solutions. These approaches are expressed by keeping materials in a loop aimed at the circular economy and by reducing the environmental burdens related to the production and use of polymers and polymer-based materials. The application of recycled or waste-based materials often deals efficiently...

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Rok 2022

• Comprehensive Enhancement of Prepolymer-Based Flexible Polyurethane Foams’ Performance by Introduction of Cost-Effective Waste-Based Ground Tire Rubber Particles

  Publikacja

  • W. Żukowska
  • P. Kosmela
  • P. Wojtasz
  • M. Szczepański
  • A. Piasecki
  • R. Barczewski
  • M. Barczewski
  • A. Hejna

  - Materials - Rok 2022

  Material innovations in polyurethane (PU) foams should ideally combine performance enhancement, environmental impact limitation, and cost reduction. These goals can be achieved by applying recycled or waste-based materials without broader industrial applications, implicating their low price. Herein, from 5 to 20 parts by weight of ground tire rubber (GTR) particles originated from the recycling of postconsumer car tires were incorporated...

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• Comprehensive Investigation of Stoichiometry–Structure–Performance Relationships in Flexible Polyurethane Foams

  Publikacja

  • A. Olszewski
  • P. Kosmela
  • A. Piasecki
  • W. Żukowska
  • M. Szczepański
  • P. Wojtasz
  • M. Barczewski
  • R. Barczewski
  • A. Hejna

  - Polymers - Rok 2022

  Polyurethane (PU) foams are versatile materials with a broad application range. Their performance is driven by the stoichiometry of polymerization reaction, which has been investigated in several works. However, the analysis was often limited only to selected properties and compared samples differing in apparent density, significantly influencing their performance. In the bigger picture, there is still a lack of comprehensive studies...

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• Insights into Stoichiometry Adjustments Governing the Performance of Flexible Foamed Polyurethane/Ground Tire Rubber Composites

  Publikacja

  • A. Olszewski
  • P. Kosmela
  • W. Żukowska
  • P. Wojtasz
  • M. Szczepański
  • M. Barczewski
  • Ł. Zedler
  • K. Formela
  • A. Hejna

  - Polymers - Rok 2022

  Polyurethanes (PU) are widely applied in the industry due to their tunable performance adjusted by changes in the isocyanate index—stoichiometric balance between isocyanate and hydroxyl groups. This balance is affected by the incorporation of modifiers of fillers into the PU matrix and is especially crucial for PU foams due to the additional role of isocyanates—foaming of the material. Despite the awareness of the issue underlined...

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