Next Article in Journal
Effect of High-Temperature Calcined Wheat Straw Powder after Lignin Removal on Properties of Waterborne Wood Coatings
Next Article in Special Issue
Coatings for Automotive Gray Cast Iron Brake Discs: A Review
Previous Article in Journal
RF Magnetron Sputtering Deposition of TiO2 Thin Films in a Small Continuous Oxygen Flow Rate
Previous Article in Special Issue
A Brief Overview on the Anticorrosion Performances of Sol-Gel Zeolite Coatings
Open AccessFeature PaperArticle

Manufacturing and Assessment of Electrospun PVP/TEOS Microfibres for Adsorptive Heat Transformers

1
Department of Civil, Energetic, Environmental and Materials Engineering, Mediterranean University of Reggio Calabria, 89134 Reggio Calabria, Italy
2
Graduate School of Natural Science and Technology, Kanazawa University, Kakuma-machi, 920-1192 Kanazawa, Japan
3
CNR-ICCOM, Via G. Moruzzi 1, 56124 Pisa, Italy
*
Author to whom correspondence should be addressed.
Coatings 2019, 9(7), 443; https://doi.org/10.3390/coatings9070443
Received: 7 June 2019 / Revised: 29 June 2019 / Accepted: 11 July 2019 / Published: 16 July 2019
A new adsorbent coating for the adsorber unit of an adsorption heat pump made of hybrid, organic–inorganic microfibres was prepared and characterized. Different coatings were obtained by the electrospinning of polyvinylpyrrolidone (PVP) solutions added with different quantities of tetraethyl orthosilicate (TEOS). PVP is a polymer with water adsorption capability and the TEOS addition allowed to increase the thermal stability of microfibres. The aim, indeed, was to preserve the polymeric structure of microfibres in order to obtain coatings with high flexibility and mechanical strength. The results demonstrated that TEOS concentrations in the range of 5–13 wt.% produced microfibre coatings of non-woven textile structure with both good water affinity and good thermal stability. SEM images of coatings showed that the deposited microfibre layers have both a high surface area and a high permeability representing a significant advantage in adsorption systems. View Full-Text
Keywords: electrospinning; adsorption; microfibre coatings; polyvinylpyrrolidone electrospinning; adsorption; microfibre coatings; polyvinylpyrrolidone
Show Figures

Figure 1

MDPI and ACS Style

Frontera, P.; Kumita, M.; Malara, A.; Nishizawa, J.; Bonaccorsi, L. Manufacturing and Assessment of Electrospun PVP/TEOS Microfibres for Adsorptive Heat Transformers. Coatings 2019, 9, 443.

Show more citation formats Show less citations formats
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Article Access Map by Country/Region

1
Search more from Scilit
 
Search
Back to TopTop