Fabrication of liquid crystalline polyurethane/polyhedral oligomeric silsesquioxane nanofibers via electrospinning
Authors:
- Artur Bukowczan,
- Konstantinos N. Raftopoulos,
- Krzysztof Pielichowski
Abstract
A series of fibrous meshes based on liquid crystalline polyurethane/POSS composites were prepared. Two types of polyhedral oligomeric silsesquioxanes (POSSs) of different structures were chosen to show their influence on electrospun fibers: aromatic-substituted Trisilanolphenyl POSS (TSP-POSS) and isobutyl-substituted Trisilanolisobutyl POSS (TSI-POSS) in amounts of 2 and 6 wt%. The process parameters were selected so that the obtained materials showed the highest possible fiber integrity. Moreover, 20 wt% solutions of LCPU/POSS composites in hexafluoroisopropanol (HFIP) were found to give the best processability. The morphology of the obtained meshes showed significant dependencies between the type and amount of silsesquioxane nanoparticles and fiber morphology, as well as thermal and mechanical properties. In total, 2 wt%. POSS was found to enhance the mechanical properties of produced mesh without disrupting the fiber morphology. Higher concentrations of silsesquioxanes significantly increased the fibers’ diameters and their inhomogeneity, resulting in a lower mechanical response. A calorimetric study confirmed the existence of liquid crystalline phase formation.
- Record ID
- CUT377b0c2c6d244d459503e913f7c6a3e6
- Publication categories
- ;
- Author
- Journal series
- Materials, ISSN , e-ISSN 1996-1944, Biweekly
- Issue year
- 2023
- Vol
- 16
- No
- 23
- Pages
- [1-15]
- Article number
- 7476
- Other elements of collation
- fot.; rys.; tab.; wykr.; Bibliografia (na s.) - 12-15; Bibliografia (liczba pozycji) - 74; Oznaczenie streszczenia - Abstr.; Numeracja w czasopiśmie - Vol. 16, Iss. 23
- Substantive notes
- Special Issue: Methodology of the Design and Testing of Composite Structures
- Keywords in English
- liquid crystallinity, POSS, polyurethanes, nanofibers, electrospinning
- ASJC Classification
- DOI
- DOI:10.3390/ma16237476 Opening in a new tab
- URL
- https://www.mdpi.com/1996-1944/16/23/7476 Opening in a new tab
- Language
- eng (en) English
- License
- Score (nominal)
- 140
- Score source
- journalList
- Score
- Publication indicators
- Uniform Resource Identifier
- https://cris.pk.edu.pl/info/article/CUT377b0c2c6d244d459503e913f7c6a3e6/
- URN
urn:pkr-prod:CUT377b0c2c6d244d459503e913f7c6a3e6
* presented citation count is obtained through Internet information analysis, and it is close to the number calculated by the Publish or PerishOpening in a new tab system.