Lecithin/graphite modified kapok fibers for functional xerogel composites

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dc.contributor.authorSANDRINI, DAIANA M.F.
dc.contributor.authorPILLIS, MARINA F.
dc.contributor.authorCORREA, OLANDIR V.
dc.contributor.authorMADESH, PRIYANKA
dc.contributor.authorKRISHNASAMY, BALAJI
dc.contributor.authorPETRI, DENISE F.S.
dc.coverageInternacional
dc.date.accessioned2024-12-16T17:05:55Z
dc.date.available2024-12-16T17:05:55Z
dc.date.issued2024
dc.description.abstractKapok fibers (KFs) exhibit a distinctive hollow tubular structure and hydrophobic surface, positioning them as intriguing materials with a leading role in developing new materials for various applications. In this study, KFs from Ceiba speciosa trees underwent modification with soy lecithin (SL) and graphite (G) particles. The wax on KFs primarily comprised hydrophobic compounds, including bis(2-ethylhexyl) phthalate, N–N-dimethyldodecanamide and 1-chloro-dodecane. These compounds interacted favorably with the alkyl chains of SL, exposing the SL charge groups to the medium, as confirmed by X-ray photoelectron spectroscopy (XPS) and wettability increase. Incorporating SL and G particles to the KFs improved their thermal stability and charring capability. KFs modified with SL and G (at 13 wt% or 16 wt%) were added to aqueous solutions of hydroxypropyl methylcellulose (HPMC) at 30 g L−1, forming homogeneous dispersions that were molded and oven-dried to create xerogel composites. Regardless of the G content, all xerogels exhibited compressive elastic modulus of 23 ± 1 kPa, maximum strain of 60% strain at 5.6 ± kPa stress, and after unloading, the xerogels recovered 77% of their original height. Their porosity amounted to 68 ± 3%. The xerogels showed a maximum sound absorption coefficient (SAC) of approximately 0.6 at 2 kHz, making them interesting sustainable materials for building and architecture. Surface resistivity and volume resistivity values amounted to 3.8 × 108 Ω/square and 8.84 × 108 Ω cm, respectively, indicating that the xerogel composites displayed antistatic properties and potential application as packing material.
dc.description.sponsorshipCoordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)
dc.description.sponsorshipFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
dc.description.sponsorshipConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
dc.description.sponsorshipIDCAPES: 88887.580710/2020-00; 001
dc.description.sponsorshipIDFAPESP: 18/13492-2
dc.description.sponsorshipIDCNPq: 304017/2021
dc.format.extent8067-8086
dc.identifier.citationSANDRINI, DAIANA M.F.; PILLIS, MARINA F.; CORREA, OLANDIR V.; MADESH, PRIYANKA; KRISHNASAMY, BALAJI; PETRI, DENISE F.S. Lecithin/graphite modified kapok fibers for functional xerogel composites. <b>Cellulose</b>, v. 31, n. 13, p. 8067-8086, 2024. DOI: <a href="https://dx.doi.org/10.1007/s10570-024-06113-2">10.1007/s10570-024-06113-2</a>. Disponível em: https://repositorio.ipen.br/handle/123456789/48787.
dc.identifier.doi10.1007/s10570-024-06113-2
dc.identifier.fasciculo13
dc.identifier.issn0969-0239
dc.identifier.orcidhttps://orcid.org/0000-0002-1423-871X
dc.identifier.percentilfi90.7
dc.identifier.percentilfiCiteScore89.00
dc.identifier.urihttps://repositorio.ipen.br/handle/123456789/48787
dc.identifier.vol31
dc.relation.ispartofCellulose
dc.rightsopenAccess
dc.titleLecithin/graphite modified kapok fibers for functional xerogel composites
dc.typeArtigo de periódico
dspace.entity.typePublication
ipen.autorMARINA FUSER PILLIS
ipen.autorOLANDIR VERCINO CORREA
ipen.codigoautor758
ipen.codigoautor488
ipen.contributor.ipenauthorMARINA FUSER PILLIS
ipen.contributor.ipenauthorOLANDIR VERCINO CORREA
ipen.identifier.fi4.9
ipen.identifier.fiCiteScore10.1
ipen.identifier.ipendoc30841
ipen.identifier.iwosWoS
ipen.identifier.ods12
ipen.range.fi4.500 - 5.999
ipen.range.percentilfi75.00 - 100.00
ipen.type.genreArtigo
relation.isAuthorOfPublication90a23f45-0a62-4233-b676-a06bd75d6cc3
relation.isAuthorOfPublication0d223026-81b0-4a0f-8968-882fd30c88d8
relation.isAuthorOfPublication.latestForDiscovery90a23f45-0a62-4233-b676-a06bd75d6cc3
sigepi.autor.atividadeMARINA FUSER PILLIS:758:730:N
sigepi.autor.atividadeOLANDIR VERCINO CORREA:488:730:N
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