Evaluation of modified silica nanoparticles in carboxylated nitrile rubber nanocomposites

•We modified silica nanoparticles with a silane agent and with a polymeric shell.•SiO2 nanoparticles induced arrangements in XNBR nanocomposites.•The SDS induced the polymeric macromolecules organization in the nanocomposites.•The silica nanoparticles dispersed in the polymer forming a mass fractal...

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Published inColloids and surfaces. A, Physicochemical and engineering aspects Vol. 462; pp. 45 - 51
Main Authors Sala, Renata L., Arantes, Tatiane M., Longo, Elson, Leite, Edson R., Paranhos, Caio M., Camargo, Emerson R.
Format Journal Article
LanguageEnglish
Published Elsevier B.V 20.11.2014
Subjects
Carboxylated
Colloidal route
Homogeneity
Macromolecules
Modified surface
Nanocomposites
Nanoparticles
Nitrile rubber
Polymer nanocomposites
Silica nanoparticles
Silicon dioxide
Styrenes
Silica nanoparticles
Modified surface
Polymer nanocomposites
Colloidal route
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Summary:•We modified silica nanoparticles with a silane agent and with a polymeric shell.•SiO2 nanoparticles induced arrangements in XNBR nanocomposites.•The SDS induced the polymeric macromolecules organization in the nanocomposites.•The silica nanoparticles dispersed in the polymer forming a mass fractal system.•The silica nanoparticles and XNBR chains formed three-dimensional network. Surface-modified silica nanoparticles have a plenty of applications, such as coatings, dyes or biomarkers, catalysts and encapsulated products. When modified with 3-(trimethoxysilyl)propyl methacrylate (SiO2-MPS) or covered with a polymeric shell obtained from a reaction between divinylbenzene and styrene (SiO2-Pol), these SiO2 nanoparticles induced distinct arrangements in polymer nanocomposites (PNC) prepared with commercial carboxylated nitrile rubber (XNBR). The hydrophilicity character of the modified SiO2 nanoparticles was also altered, improving their interaction with the XNBR macromolecules. Consequently, choosing the PNC properties for different conditions and applications became possible due to the adjustment of the nanoparticle surface characteristics. Although the final characteristics of the nanocomposites films varied according to the nanoparticle used, the PNC prepared with SiO2-Pol presented better homogeneity than those with SiO2-MPS.
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ISSN:0927-7757
1873-4359
DOI:10.1016/j.colsurfa.2014.08.012