A New Modifier for Silica in Reinforcing SBR Elastomers for the Tyre Industry

Bertora, Alessandro; Castellano, Maila; Marsano, Enrico; Alessi, Matteo; Conzatti, Lucia; Stagnaro, Paola; Colucci, Giovanna; Priola, Aldo; Turturro, Antonio

doi:10.1002/mame.201000335

Cited by 48 publications

(44 citation statements)

References 44 publications

(8 reference statements)

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“…In the polymer field such a modification plays an important role in promoting adhesion between powder and polymer, in improving the disperdibility of oxide powders into polymer matrix (Niedermeier et al 2002;Kim and Vanderkooi 2002;Wang et al 1991;Wang and Wolff 1992;Wolff et al 1994aWolff et al , 1994bEvans and Waddell 1995;Wang 1998;Schuster et al 1996;Costa et al 2003;Castellano et al 2005;Fröhlich et al 2005;Hunsche et al 1998;Ramier et al 2007;Bertora et al 2011). …”

Section: Introductionmentioning

confidence: 96%

Dependence of surface properties of silylated silica on the length of silane arms

et al. 2012

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Amorphous precipitated Zeosil 1165 MP silica was silylated with low grafting degrees of organosilicons bearing different alkoxy and hydrocarbon tails, like monomethoxy(dimethyl)octadecylsilane (DMODMS), monomethoxytrimethylsilane (TMMS), trimethoxymercaptopropylsilane (MPTS), and 3-octanoylthio-1-propyltriethoxysilane (NXT ® ). Thermogravimetry and Elemental Analysis were used to determine the degree of silane grafting and the final number of free silanol OH groups/nm 2 on the modified Zeosil surface. Free energy, enthalpy and entropy of adsorption of hydrocarbon probes were determined by Inverse Gas Chromatography at infinite dilution and dispersive component, γ d s , and specific interaction parameter, I sp , of the surface tension of the silica surface were calculated. Silylation changes the hydrophilic character of Zeosil silica to the hydrophobic one, on increasing the grafting degree and, mainly, the length of hydrocarbon tail of the silane

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Section: Introductionmentioning

confidence: 96%

Dependence of surface properties of silylated silica on the length of silane arms

et al. 2012

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“…Modified-silica with the grafted PB showed a decrease in the number of OH-groups on the surface to the same level as that of silica with TESPT, due to the influence of the shielding effect of the grafted PB. The decrease of hydrophilic character of the surface modified silica further lead to a reduction of filler-filler interaction and an improvement of filler dispersion in the rubber matrix [16].…”

Section: Introductionmentioning

confidence: 99%

“…Silane grafted onto polybutadiene was done in solution under nitrogen atmosphere [15][16][17]. The solution state is known to provide a better control of the reaction compared to the melt state, but is environmentally unfriendly and provides only a small amount of grafted polymer per batch.…”

Section: Introductionmentioning

confidence: 99%

Silane grafted natural rubber and its compatibilization effect on silica-reinforced rubber tire compounds

Sengloyluan¹,

Sahakaro²,

Dierkes³

et al. 2017

Express Polym. Lett.

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Abstract. Natural Rubber (NR) grafted with 3-octanoylthio-1-propyltriethoxysilane (NXT) was prepared by melt mixing using 1,1′-di(tert-butylperoxy)-3,3,5-trimethylcyclohexane as initiator at 140°C with NXT contents of 10 and 20 parts per hundred rubber [phr] and initiator 0.1 phr. The silane grafted on NR molecules was confirmed by Fourier transform infrared (FTIR), proton nuclear magnetic resonance ( 1 H-NMR) and scanning electron microscopy/energy dispersive X-ray spectroscopy (SEM-EDX). Based on 1 H-NMR, the use of 10 and 20 phr (parts per hundred resin) of silane resulted in grafted NXT onto NR of 0.66 and 1.32 mol%, respectively, or a grafting efficiency of approx.38%. The use of NXT-grafted NR as compatibilizer in silica-filled NR compounds, to give a total amount of NXT in both grafted and non-grafted forms in the range of 0.8-6.1 wt% relative to the silica, decreases the Mooney viscosity and Payne effect of the compounds, improves filler-rubber interaction, and significantly increases the tensile properties of the silica-filled NR-compounds compared to the non-compatibilized one. At the same silane-content, the use of silane-grafted NR gives slightly better properties than the straight use of the same silane. With sulfur compensation, the use of NXT-grafted-NR with about 6 wt% NXT relative to the silica gives technical properties that reach the levels obtained for straight use of bis-(3-triethoxysilyl-propyl)tetrasulfide (TESPT) at 8.6 wt% relative to the silica.

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“…The morphology with a rough surface is very interesting for ERF because it gives stronger ER effect compared to a smooth surface [16,[39][40]. OH silanol groups [43]. Regarding the ORMOSIL, the second and third decomposition peaks at around 310°C and 500°C corresponded to the IL moiety attached to the silica particle [36,44].…”

Section: 1materials Characteristicsmentioning

confidence: 99%

Ionic liquid-based organically modified silica for the development of new electrorheological fluids

Marins

Soares

2017

Colloids and Surfaces A: Physicochemical and Engineering Aspect

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To cite this version:Jéssica Alves Marins, Bluma Soares. Ionic liquid-based organically modified silica for the development of new electrorheological fluids. Colloids The presence of the silylated ionic liquid covalently attached to the silica particles was confirmed by thermogravimetric analysis (TGA), Fourier transform infrared spectroscopy (FTIR) and X-ray photoelectron spectroscopy (XPS). The effect of the amount of imidazolium-based ionic liquid immobilized on the spherical silica particles on the electrorheological (ER) behavior of the corresponding suspensions in silicone oil was investigated. A significant ER effect was observed for the fluid containing silica modified with around 10%wt. of IL-TMOS. In fact, a very good, extremely rapid and reversible response under the action of an electric field at intensity to 4 kV/mm was achieved, with shear stress value as high as 2200 Pa. The dielectric properties were also evaluated to explain the ER response of these IL-ORMOSIL particles

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A New Modifier for Silica in Reinforcing SBR Elastomers for the Tyre Industry

Cited by 48 publications

References 44 publications

Dependence of surface properties of silylated silica on the length of silane arms

Dependence of surface properties of silylated silica on the length of silane arms

Silane grafted natural rubber and its compatibilization effect on silica-reinforced rubber tire compounds

Ionic liquid-based organically modified silica for the development of new electrorheological fluids

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