Journal
MATERIALS CHEMISTRY AND PHYSICS
Volume 287, Issue -, Pages -Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.matchemphys.2022.126248
Keywords
Polyvinylpyrrolidone; sol-gel silica; Hybrid scaffolds; Electrospinning
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Funding
- Ministero dello Sviluppo Economico - Accordo di Programma MiSE-CNR per la Ricerca di Sistema elettrico Nazionale [PTR 2019-2021]
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In this study, fibrous composites of TEOS/PVP were prepared using a sol-electrospinning process, and the correlation between their morphology, thermal stability, and spectroscopic features were analyzed. The results demonstrated that the addition of TEOS in the PVP/ethanol system enhanced the thermal stability of the microfibers.
Fibrous composites of tetraethylortosilicate (TEOS)/polyvinylpyrrolidone (PVP) have been successfully prepared by a sol-electrospinning process and characterized by ATR-FTIR spectroscopy, and the spectroscopic features correlated with their morphology and thermal stability. PVP is a polymer with water adsorption capability and the TEOS addition allowed to increase the thermal stability of microfibers. The spectroscopic analysis of the impact of the silica-based reinforcing phase along with morphological and thermal analysis have demonstrated that TEOS in PVP/ethanol system may interfere with the evaporation of water and ethanol during ES process and with the final capacity of the material of adsorbing water. The elucidation of these mechanisms may help in the design of hybrid, organic-inorganic microfibers materials for specific applications, as adsorbent materials for heat pumps.
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