Dynamic and structural correlations in nanocomposites of silica with modified surface and carboxylated nitrile rubber

Autor(es)

Sala, Renata L. ^[1] ; Oliveira Xavier, Tatielih P. ^[2] ; Venancio, Tiago ^[2] ; Arantes, Tatiane Moraes ^[3] ; Paranhos, Caio M. ^[2] ; Camargo, Emerson R. ^[1]

Afiliação do(s) autor(es)

^[1] UFSCar Fed Univ Sao Carlos, Dept Chem, LIEC, Rod Washington Luis Km 235, CP 676, BR-13565905 Sao Carlos, SP - Brazil

^[2] UFSCar Fed Univ Sao Carlos, Dept Chem, Rod Washington Luis Km 235, CP 676, BR-13565905 Sao Carlos, SP - Brazil

^[3] Fed Inst Educ Sci & Technol Goiano, Chem, Sul Goiania Ave, Km 1, BR-75901970 Rio Verde, Go - Brazil

• Tipo de documento: Artigo Científico
• Fonte: Journal of Colloid and Interface Science; v. 466, p. 247-253, MAR 15 2016.
• Citações Web of Science: 2

Resumo

Distinct affinities between the organic and inorganic phases were observed in nanocomposites prepared through a colloidal route with carboxylated nitrile rubber and modified silica nanoparticles, which resulted in variable mechanical properties and improved thermal stability. Nanoparticles with modified surface affected the macromolecular arrangements of the elastomeric matrix, changing the final mechanical behavior of the nanocomposite, which could be predicted by the spin-lattice relaxation time measured by solid-state NMR. It was also possible to identify how each different nanoparticle affected the molecular dynamic of nanocomposite, correlating the dynamic-mechanical analysis with the NMR data of the saturated carbons of the elastomer. (C) 2015 Elsevier Inc. All rights reserved. (AU)

• Processo FAPESP: 12/07067-0 - Fotocatalisadores baseados em titanato de bismuto sintetizadas pelo método dos complexos oxidantes de peróxido (OPM)
• Beneficiário: Emerson Rodrigues de Camargo
• Modalidade de apoio: Auxílio à Pesquisa - Regular
• Processo FAPESP: 13/07296-2 - CDMF - Centro de Desenvolvimento de Materiais Funcionais
• Beneficiário: Elson Longo da Silva
• Modalidade de apoio: Auxílio à Pesquisa - Centros de Pesquisa, Inovação e Difusão - CEPIDs
• Processo FAPESP: 12/05013-0 - Modificação das propriedades dos polímeros de NBR carboxilado comerciais a partir da incorporação de nanopartículas sintéticas
• Beneficiário: Renata Lang Sala
• Modalidade de apoio: Bolsas no Brasil - Mestrado