Even if the carbon nanotubes (CNTs) and their derivatives are commonly used as reinforcing phase in composite materials, also in commercial products, their tendency to agglomerate generally determines a scarce dispersion, thus not maximizing the effect due to the second phase. In this article, a perfect dispersion of highly entangled nanotubes was achieved by using a very simple approach: exploiting the dispersing effect of a low-cost polymer, polyvinyl butyral (PVB), coupled with standard ultrasound sonication. Several dispersion approaches were tested in order to develop a consistent and widely applicable dispersion protocol. The tape casting technology was subsequently used to produce 100 to 300 μm thick PVB-matrix composite tapes, reinforced by multiwall CNTs dispersed according to the optimized protocol. Their mechanical properties were evaluated, and a simple model was used to demonstrate that the effective dispersion of CNTs is the key to obtain significantly improved properties.
Polyvinyl butyral-based composites with carbon nanotubes: Efficient dispersion as a key to high mechanical properties / Lavagna, L.; Marchisio, S.; Merlo, A.; Nistico, R.; Pavese, M.. - In: POLYMER COMPOSITES. - ISSN 0272-8397. - ELETTRONICO. - 41:9(2020), pp. 3627-3637.
|Titolo:||Polyvinyl butyral-based composites with carbon nanotubes: Efficient dispersion as a key to high mechanical properties|
|Data di pubblicazione:||2020|
|Digital Object Identifier (DOI):||http://dx.doi.org/10.1002/pc.25661|
|Appare nelle tipologie:||1.1 Articolo in rivista|
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