Effect of treatment of Bis(3‐triethoxysilyl propyl)tetrasulfane on physical property of <i>in situ</i> sodium activated and organomodified bentonite clay – SBR rubber nanocomposite

Comparative studies on corrosion protection properties of polyimide-silica-clay composites were studied in this article. A series of polyimide-silica (PIS), polyimide-clay (PIC), and polyimide-silica-clay composites (PISC) materials, consisting of an organo-soluble polyimide (ODA-BSAA) matrix, inorganic silica particles prepared through the sol-gel reaction of tetraethyl orthosilicate (TEOS) and dispersed nanolayers of inorganic montmorillonite clay, were successfully prepared by solution dispersion technique. Then, all samples were characterized by FTIR, powder X-ray diffraction patterns, transmission electron microscopy, and 29 Si solid-state NMR. The main focus of this article is the comparison of the corrosion protection properties of PIS, PIC, and PISC composite materials. Normally, the aspect ratio of clay is higher than silica. Superior dispersion of clay platelets into a polymer matrix may effectively increase the length of diffusion pathways for oxygen and water. The effects of the materials composition on the corrosion protection performance, gas barrier, and optical properties, in the form of both coating and film, were also studied by electrochemical corrosion measurements (e.g., corrosion potential, polarization resistance, corrosion current, and impedance spectroscopy), gas permeability analysis, and UV-visible transmission spectroscopy.

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Styrene–butadiene rubber/cellulose II/clay nanocomposites prepared by cocoagulation—mechanical properties

Zine¹,

Conceição²,

Visconte³

et al. 2010

J of Applied Polymer Sci

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In this work, nanocomposites of styrene butadiene rubber (SBR), cellulose II, and clay were prepared by cocoagulation of SBR latex, cellulose xanthate, and clay aqueous suspension mixtures. The incorporated amount of cellulose II was 15 phr, and the clay varied from 0 to 7 phr. The influence of cellulose II and clay was investigated by rheometric, mechanical, physicochemical, and morphological properties. From the analysis of transmission electron microscopy (TEM), dispersion in nanometric scale (below 100nm) of the cellulosic and mineral components throughout the elastomeric matrix was observed. XRD analysis suggested that fully exfoliated structure could be obtained by this method when low loading of silicate layers (up to 5 phr) is used. The results from mechanical tests showed that the nanocomposites presented better mechanical properties than SBR gum vulcanizate. Furthermore, 5 phr of clay is enough to achieve the best tensile properties.

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Effect of treatment of Bis(3‐triethoxysilyl propyl)tetrasulfane on physical property of in situ sodium activated and organomodified bentonite clay – SBR rubber nanocomposite

Cited by 6 publications

References 22 publications

Automotive Applications of Rubber–Clay Nanocomposites

Automotive Applications of Rubber–Clay Nanocomposites

Comparative studies on corrosion protection properties of polyimide‐silica and polyimide‐clay composite materials

Styrene–butadiene rubber/cellulose II/clay nanocomposites prepared by cocoagulation—mechanical properties

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