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Published in: Polymer Bulletin 12/2023

24-01-2023 | ORIGINAL PAPER

The importance of polyurethane/carbon nanotubes composites fabrication method to mimic mechanical behavior of different types of soft tissues

Authors: Zahra Eivazi Zadeh, Faezeh Eskandari, Mehdi Shafieian, Atefeh Solouk, Masoumeh Haghbin Nazarpak

Published in: Polymer Bulletin | Issue 12/2023

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Abstract

Polyurethane/Carbon nanotubes (PU/CNTs) composites are widely used materials in biomedical engineering. PU/CNT composites are commonly fabricated by electrospinning and solvent casting methods. The choice of fabrication method can influence the composites structure, which affects the mechanical properties. This study investigated the influence of the fabrication method and proportion of CNTs on the mechanical behavior of PU/CNTs biomaterials, synthesized by electrospinning and solvent casting. The mechanical properties of the fabricated PU/CNTs samples with different amounts of CNTs were evaluated by uniaxial tensile testing, which involved cyclic loading to different strain levels. The results indicated that under tensile loading, electrospun samples displayed strain-stiffening behavior, while solvent-casted films displayed strain-softening behavior, which is similar to the mechanical properties of collagenous and non-collagenous soft tissues, respectively. Pre-loading to each strain level caused softening in both electrospun and solvent-casted samples and changed the trend of the stress–strain curve. It is proposed that the trend of the stress–strain curve, which is affected by pre-loading and choice of biomaterial fabrication technique, should be considered an essential factor when fabricating biomaterials for tissue engineering and regenerative medicine purposes.

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Literature
3.
go back to reference Hu J, Tan L (2017) Polyurethane composites and nanocomposites for biomedical applications. In: Polyurethane Polymers. Elsevier. pp 477–498 Hu J, Tan L (2017) Polyurethane composites and nanocomposites for biomedical applications. In: Polyurethane Polymers. Elsevier. pp 477–498
Metadata
Title
The importance of polyurethane/carbon nanotubes composites fabrication method to mimic mechanical behavior of different types of soft tissues
Authors
Zahra Eivazi Zadeh
Faezeh Eskandari
Mehdi Shafieian
Atefeh Solouk
Masoumeh Haghbin Nazarpak
Publication date
24-01-2023
Publisher
Springer Berlin Heidelberg
Published in
Polymer Bulletin / Issue 12/2023
Print ISSN: 0170-0839
Electronic ISSN: 1436-2449
DOI
https://doi.org/10.1007/s00289-023-04672-1

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