Electrospun Sound-Absorbing Nanofibrous Webs from Recycled Poly(vinyl butyral)

0564365 - ÚH 2023 RIV CH eng J - Journal Article
Filip, Petr - Sedláček, T. - Peer, Petra - Juřička, M.
Electrospun Sound-Absorbing Nanofibrous Webs from Recycled Poly(vinyl butyral).
Polymers. Roč. 14, č. 22 (2022), č. článku 5049. E-ISSN 2073-4360
Institutional support: RVO:67985874
Keywords : poly(vinyl butyral) * poly(vinyl butyral) recycling * electrospinning * sound-absorption
OECD category: Nano-materials (production and properties)
Impact factor: 5, year: 2022
Method of publishing: Open access
https://www.mdpi.com/2073-4360/14/22/5049

The amount of poly(vinyl butyral) (PVB) foils added to car windscreens to suppress glass shattering represents a huge worldwide volume of the material, and once a vehicle is end-of-life it also becomes a significance contributor to landfill. The recycling of PVB materials from windscreens has been expensive and despite improvements in recycling technologies, the landfill burden still increases. However, an increase in oil prices can shift the economic balance and stimulates the possible applicability of recycled PVB. As PVB is a relatively easy electrospinnable material, it is shown that nanofibrous mats produced from recycled PVB blends in ethanol exhibit very good sound-absorbing properties. To achieve an optimal composition between virgin and recycled PVB blends, a series of their ratios was consecutively characterized using various techniques (rheometry, SEM, FTIR, DSC, TGA, DMA, an impedance tube for determining sound absorbance). The best result was obtained with two wt. portions of 8 wt.% solution of virgin PVB in ethanol and one wt. portion of 12 wt.% solution of recycled PVB in ethanol.

Permanent Link: https://hdl.handle.net/11104/0336049