Molecular Alignment of a Meta-Aramid on Carbon Nanotubes by In Situ Interfacial Polymerization.
Nano Lett
; 22(3): 998-1006, 2022 02 09.
Article
en En
| MEDLINE
| ID: mdl-35080898
ABSTRACT
Molecularly organized nanocomposites of polymers and carbon nanotubes (CNTs) have great promise as high-performance materials; in particular, conformal deposition of polymers can control interfacial properties for mechanical load transfer, electrical or thermal transport, or electro/chemical transduction. However, controllability of polymer-CNT interaction remains a challenge with common processing methods that combine CNTs and polymers in melt or in solution, often leading to nonuniform polymer distribution and CNT aggregation. Here, we demonstrate CNTs within net-shape sheets can be controllably coated with a conformal coating of meta-aramid by simultaneous capillary infiltration and interfacial polymerization. We determine that π-interaction between the polymer and CNTs results in chain alignment parallel to the CNT outer wall. Subsequent nucleation and growth of the precipitated aramid forms a smooth continuous layered sheath around the CNTs. These findings motivate future investigation of mechanical properties of the resulting composites, and adaptation of the in situ polymerization method to other substrates.
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Banco de datos:
MEDLINE
Asunto principal:
Nanotubos de Carbono
/
Nanocompuestos
Idioma:
En
Año:
2022
Tipo del documento:
Article