Enhanced morphology and mechanical characteristics of clay/styrene butadiene rubber nanocomposites

Devi, K. S. Usha; Ponnamma, Deepalekshmi; Causin, Valerio; Maria, Hanna J.; Thomas, Sabu

doi:10.1016/j.clay.2015.07.009

Cited by 41 publications

(6 citation statements)

References 48 publications

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“…It can also be seen that mixing uniformly distributes the fillers in the rubber matrix. Frequently, high filler content levels result in a decrease in the properties caused by an increase in the tendency of the fillers to aggregate and form larger particles [16]. This causes a reduction of the aspect ratio of the filler and of the interaction surface area between the matrix and the filler.…”

Section: Resultsmentioning

confidence: 99%

Mechanical Properties and Chemical Resistance of New Composites for Oil Pump Impellers

et al. 2018

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In this paper, a new class of high-performance composites and a method of their production based on the carbonization of an elastomeric matrix are proposed. The use of elastomeric matrix makes it possible to manufacture products with complex shapes, while the subsequent carbonization can significantly improve their properties by changing the chemical nature of the elastomeric matrix. Such an approach can reduce the products' machining cost, especially for composites reinforced with super hard fillers such as silicon carbide at high filling degrees. Low-temperature carbonization makes it possible to obtain composites with mechanical behavior similar to that of ceramics. In contrast to classical elastomeric materials, the nitrile butadiene rubber (NBR)-based compounds were highly filled (300 parts per hundred rubber-PHR) with different carbon fillers and silicon carbide; then cured and carbonized at low-temperature 360 • C with the carbonization cycle of 12 h. The feasibility of the production method was validated through the manufacturing of products with complex shapes-impellers for electric centrifugal pumps. It was found that the carbonized composites have good chemical resistance and low water absorption. The composites have high Shore D hardnesses (93-96), ultimate tensile strengths (62-85 MPa), Young's moduli (17-24 GPa), and compressive strengths (155-181 MPa).

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Section: Resultsmentioning

confidence: 99%

Mechanical Properties and Chemical Resistance of New Composites for Oil Pump Impellers

et al. 2018

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“…Polymer nanocomposites with well-exfoliated MMt nanolayers have attracted significant research attention. Exfoliated clay layers improve the mechanical properties of clay/styrene–butadiene rubber nanocomposites [ 30 ]. Poly(ethylene oxide)/exfoliated-MMt nanocomposites demonstrate excellent thermal and mechanical properties [ 31 ], and poly(ethylene terephthalate)/exfoliated clay nanocomposites exhibit outstanding mechanical, thermal, and barrier properties [ 32 ].…”

Section: Introductionmentioning

confidence: 99%

Enhancing the Properties of Water-Soluble Copolymer Nanocomposites by Controlling the Layer Silicate Load and Exfoliated Nanolayers Adsorbed on Polymer Chains

Wang

Chen

et al. 2023

Polymers

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Novel polymer nanocomposites of methacryloyloxy ethyl dimethyl hexadecyl ammonium bromide-modified montmorillonite (O-MMt) with acrylamide/sodium p-styrene sulfonate/methacryloyloxy ethyl dimethyl hexadecyl ammonium bromide (ASD/O-MMt) were synthesized via in situ polymerization. The molecular structures of the synthesized materials were confirmed using Fourier-transform infrared and 1H-nuclear magnetic resonance spectroscopy. X-ray diffractometry and transmission electron microscopy revealed well-exfoliated and dispersed nanolayers in the polymer matrix, and scanning electron microscopy images revealed that the well-exfoliated nanolayers were strongly adsorbed on the polymer chains. The O-MMt intermediate load was optimized to 1.0%, and the exfoliated nanolayers with strongly adsorbed chains were controlled. The properties of the ASD/O-MMt copolymer nanocomposite, such as its resistance to high temperature, salt, and shear, were significantly enhanced compared with those obtained under other silicate loads. ASD/1.0 wt% O-MMt enhanced oil recovery by 10.5% because the presence of well-exfoliated and dispersed nanolayers improved the comprehensive properties of the nanocomposite. The large surface area, high aspect ratio, abundant active hydroxyl groups, and charge of the exfoliated O-MMt nanolayer also provided high reactivity and facilitated strong adsorption onto the polymer chains, thereby endowing the resulting nanocomposites with outstanding properties. Thus, the as-prepared polymer nanocomposites demonstrate significant potential for oil-recovery applications.

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“…Inorganic fillers represent a large fraction of them. We can list natural mineral clays, like montmorillonite [ 7 ], mica [ 8 ], talc [ 9 ]; salts, like calcium carbonate CaCO 3 [ 10 ], Ca 2 SO 4 [ 11 ], BaSO 4 [ 12 ], phosphates [ 13 ]; and metal oxides or hydroxides, like SiO 2 [ 14 ], ZnO [ 15 ], Al 2 O 3 [ 16 ], MgO [ 17 ], Al(OH) 3 [ 18 ], or Mg(OH) 2 [ 19 ]. Organic fillers have also been studied as reinforcing fillers, like carbon-based materials: black carbon [ 20 ], graphite [ 21 ], and carbon nanotubes [ 22 ]; or bio-sourced cotton [ 23 ], wood flour [ 24 ], and cellulose fibres [ 25 ].…”

Section: Introductionmentioning

confidence: 99%

Hybrid Silica-Based Fillers in Nanocomposites: Influence of Isotropic/Isotropic and Isotropic/Anisotropic Fillers on Mechanical Properties of Styrene-Butadiene (SBR)-Based Rubber

et al. 2021

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The improvement of mechanical properties of polymer-based nanocomposites is usually obtained through a strong polymer–silica interaction. Most often, precipitated silica nanoparticles are used as filler. In this work, we study the synergetic effect occurring between dual silica-based fillers in a styrene-butadiene rubber (SBR)/polybutadiene (PBD) rubber matrix. Precipitated Highly Dispersed Silica (HDS) nanoparticles (10 nm) have been associated with spherical Stöber silica nanoparticles (250 nm) and anisotropic nano-Sepiolite. By imaging filler at nano scale through Scanning Transmission Electron Microscopy, we have shown that anisotropic fillers align only in presence of a critical amount of HDS. The dynamic mechanical analysis of rubber compounds confirms that this alignment leads to a stiffer nanocomposite when compared to Sepiolite alone. On the contrary, spherical 250 nm nanoparticles inhibit percolation network and reduce the nanocomposite stiffness.

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Enhanced morphology and mechanical characteristics of clay/styrene butadiene rubber nanocomposites

Cited by 41 publications

References 48 publications

Mechanical Properties and Chemical Resistance of New Composites for Oil Pump Impellers

Mechanical Properties and Chemical Resistance of New Composites for Oil Pump Impellers

Enhancing the Properties of Water-Soluble Copolymer Nanocomposites by Controlling the Layer Silicate Load and Exfoliated Nanolayers Adsorbed on Polymer Chains

Hybrid Silica-Based Fillers in Nanocomposites: Influence of Isotropic/Isotropic and Isotropic/Anisotropic Fillers on Mechanical Properties of Styrene-Butadiene (SBR)-Based Rubber

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