Tuning the structural and functional properties of HAVOH-based composites via ionic liquid tailoring of MWCNTs distribution

Página do item simplificado
dc.contributor.authorSantillo C.
dc.contributor.authorGodoy A.P.
dc.contributor.authorDonato R.K.
dc.contributor.authorEspanhol Andrade R.J.
dc.contributor.authorBuonocore G.G.
dc.contributor.authorXia H.
dc.contributor.authorLavorgna M.
dc.contributor.authorSorrentino A.
dc.date.accessioned2024-03-12T19:20:33Z
dc.date.available2024-03-12T19:20:33Z
dc.date.issued2021
dc.description.abstract© 2021The structural and functional properties of polymer composite materials strictly depend on the spatial distribution of fillers, such as multiwalled carbon nanotubes (MWCNTs), inside the matrix. Herein, novel composites have been obtained by embedding MWCNTs into a modified polyvinyl alcohol (HAVOH) matrix, using the ionic liquid (IL) 1-Benzyl-3-methylimidazolium chloride (BenzImCl) as compatibilizer. The composites were prepared by solvent-wrapping carbon nanotubes onto HAVOH powders, followed by the melt-compounding approach to produce pellets for Fused Deposition Modelling technology (FDM). The efficacy of both the process and the IL on tailoring the spatial distribution of the MWCNTs into the HAVOH matrix is thoroughly studied and correlated with the electrical conductivity of the resulting composites. The sample printed by FDM, containing 6 wt % of MWCNTs and 0.6 wt% of IL exhibited a percolating morphology and led to an electrical conductivity (σ) value of 1.2*10−2 S/m. Moreover, after annealing at 220 °C for 2 h the σ value increased up to 7.9*10−1 S/m. The thermal treatment in presence of the MWCNTs also induces the formation of crosslinked HAVOH molecules changing the composites from easily soluble to completely water insoluble materials. This revealed the potential of HAVOH-based composites as raw material for FDM technology to realize post-printing cross-linkable materials.
dc.description.volume207
dc.identifier.doi10.1016/j.compscitech.2021.108742
dc.identifier.issn0266-3538
dc.identifier.urihttps://dspace.mackenzie.br/handle/10899/34662
dc.relation.ispartofComposites Science and Technology
dc.rightsAcesso Restrito
dc.subject.otherlanguageElectric conductivity
dc.subject.otherlanguageIonic liquid
dc.subject.otherlanguagePolymer composite
dc.subject.otherlanguagePolymer-wrapped multi walled carbon nanotubes
dc.subject.otherlanguageSmall angle X-ray scattering
dc.titleTuning the structural and functional properties of HAVOH-based composites via ionic liquid tailoring of MWCNTs distribution
dc.typeArtigo
local.scopus.citations9
local.scopus.eid2-s2.0-85101766164
local.scopus.subjectCross-linkable
local.scopus.subjectElectrical conductivity
local.scopus.subjectFunctional properties
local.scopus.subjectFused deposition modelling
local.scopus.subjectInsoluble materials
local.scopus.subjectMelt-compounding
local.scopus.subjectMultiwalled carbon nanotube (MWCNTs)
local.scopus.subjectPolymer composite materials
local.scopus.updated2024-12-01
local.scopus.urlhttps://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85101766164&origin=inward
Arquivos
Coleções
Artigos de periódico