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  4. Sustainable and CO2-rich electrospun nonwovens with enhanced mechanical properties obtained from isocyanate-free aliphatic-aromatic poly(carbonate-urethane)s
 
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August 2024
Journal Article
Title

Sustainable and CO2-rich electrospun nonwovens with enhanced mechanical properties obtained from isocyanate-free aliphatic-aromatic poly(carbonate-urethane)s

Abstract
Meeting the criteria of performance and biocompatibility poses a significant challenge in developing polymeric nonwovens for biomedical and filtration purposes. Although non-isocyanate poly(carbonate-urethane)s (NIPCUs) made by transurethane polycondensation are emerging as non-toxic alternatives to isocyanate-based polyurethanes, their fibrous processing is scarce. Therefore, our work focused on preparing electrospun nonwovens from sustainable NIPCUs with an architecture tailored for high mechanical strength. Combining aromatic 4,4′-diphenylmethane bis(hydroxyalkyl carbamate) hard segments and soft oligocarbonate segments imparted strength and flexibility, while incorporating up to 29 wt % of CO2 into the structure of the NIPCUs. Scanning electron microscopy showed that adjusted electrospinning parameters produced uniform, submicron fibers without defects. FT-IR and NMR spectroscopy confirmed their unchanged composition and molar mass (20-25 kg mol-1) compared to the unprocessed NIPCUs. Differential scanning calorimetry and dynamic mechanical thermal analysis showed that the macromolecular arrangement induced during electrospinning was strongly dependent on the architecture of the polymer. The mechanical performance of the nonwovens, reaching tensile strength above 5 MPa and elongation at break up to 250 %, correlated to their morphological differences. Thus, appropriate modification of the structure and morphology of the NIPCU nonwovens allowed the production of CO2-rich submicron fibers with high toughness and flexibility.
Author(s)
Wołosz, Dominik
Warsaw University of Technology  
Mazurek-Budzyńska, Magdalena
Warsaw University of Technology  
Rolińska, Karolina
Warsaw University of Technology  
Fage, Aleksandra  orcid-logo
Fraunhofer-Institut für Chemische Technologie ICT  
Zimny, Arkadiusz
Warsaw University of Technology  
Dębowski, Maciej
Warsaw University of Technology  
Gołofit, Tomasz
Warsaw University of Technology  
Węgrzyk, Grzegorz
Warsaw University of Technology  
Ryszkowska, Joanna
Warsaw University of Technology  
Parzuchowski, Paweł Grzegorz
Warsaw University of Technology  
Journal
Polymer  
Open Access
File(s)
Download (5.96 MB)
Rights
CC BY-NC-ND 3.0 (Unported): Creative Commons Attribution-NonCommercial-NoDerivatives
DOI
10.1016/j.polymer.2024.127509
10.24406/publica-3634
Additional full text version
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Language
English
Fraunhofer-Institut für Chemische Technologie ICT  
Keyword(s)
  • Non-isocyanate polyurethane

  • Electrospinning

  • Transurethanization

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