Understanding the Microstructure Connectivity in Photopolymerizable Aluminum-Phosphate-Silicate Sol-Gel Hybrid Materials for Additive Manufacturing

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Autor(es): dc.contributorUniversidade Estadual Paulista (UNESP)-
Autor(es): dc.contributorPhotonique et Laser─COPL─Universite Laval-
Autor(es): dc.contributorUniversidade de São Paulo (USP)-
Autor(es): dc.creatorTayama, Gabriel Toshiaki-
Autor(es): dc.creatorSantagneli, Silvia Helena-
Autor(es): dc.creatorde Oliveira Junior, Marcos-
Autor(es): dc.creatorMessaddeq, Younes-
Data de aceite: dc.date.accessioned2025-08-21T18:06:57Z-
Data de disponibilização: dc.date.available2025-08-21T18:06:57Z-
Data de envio: dc.date.issued2023-07-29-
Data de envio: dc.date.issued2023-07-29-
Data de envio: dc.date.issued2023-02-08-
Fonte completa do material: dc.identifierhttp://dx.doi.org/10.1021/acs.jpcc.2c08027-
Fonte completa do material: dc.identifierhttp://hdl.handle.net/11449/249627-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/11449/249627-
Descrição: dc.descriptionIn this paper, we report the synthesis and structural characterization of transparent and photopolymerizable aluminum-phosphate-silicate hybrid materials obtained via the sol-gel route, with different aluminum/phosphate (Al/P) ratios. We explored the system Si(1-x)-(Al/P) (x) with x varying from 0.3 to 1, and atomic ratios of Al/P are 1:3, 1:1, and 3:1. All compositions contain high inorganic mass content (up to 40 wt %). Furthermore, they are compatible with vat-photopolymerization platforms. The structural evolution of the hybrid materials with the silicon concentration was investigated by SEM, phase-contrast AFM, and solid-state NMR techniques, using single- and double-resonance experiments. The structure follows the build-up principle using aluminum-phosphate species and alkoxysilane chains as fundamental building blocks. These aluminum-phosphate species were identified as monomeric and dimeric chain structures by comparing different parameters obtained from NMR data to compound models. Monomeric and dimeric aluminum-phosphate chain structures were predominant in 3:1 and 1:3 Al/P ratio samples, respectively, promoting and hindering the heterocondensation with the alkoxysilane precursor, respectively. The photopolymerization mechanism leads to the percolation of the inorganic networks through a parallel polymethylmethacrylate network, resulting in a material with structural heterogeneities in the range of 5 nm, evidenced by phase-contrast AFM.-
Descrição: dc.descriptionFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)-
Descrição: dc.descriptionNatural Sciences and Engineering Research Council of Canada-
Descrição: dc.descriptionThe Research Council-
Descrição: dc.descriptionChemistry Institute São Paulo State University─UNESP, Rua Francisco Degni 55, Araraquara-
Descrição: dc.descriptionCentre de Optique Photonique et Laser─COPL─Universite Laval, 2375 rue de la Terrase-
Descrição: dc.descriptionSão Carlos Institute of Physics University of São Paulo, São Carlos-
Descrição: dc.descriptionChemistry Institute São Paulo State University─UNESP, Rua Francisco Degni 55, Araraquara-
Formato: dc.format2416-2429-
Idioma: dc.languageen-
Relação: dc.relationJournal of Physical Chemistry C-
???dc.source???: dc.sourceScopus-
Título: dc.titleUnderstanding the Microstructure Connectivity in Photopolymerizable Aluminum-Phosphate-Silicate Sol-Gel Hybrid Materials for Additive Manufacturing-
Tipo de arquivo: dc.typelivro digital-
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