The self-assembly of sepiolite and silica fillers for advanced rubber materials: The role of collaborative filler network

Tagliaro, Irene; Cobani, Elkid; Carignani, Elisa; Conzatti, Lucia; D’Arienzo, Massimiliano; Giannini, Luca; Martini, Francesca; Nardelli, Francesca; Scotti, Roberto; Stagnaro, Paola; Tadiello, Luciano; Credico, Barbara Di

doi:10.1016/j.clay.2021.106383

Cited by 23 publications

(17 citation statements)

References 27 publications

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“…The global NBR market size was 1835.9 million USD and it is expected to reach to 2450 million USD by the end of 2025, with a growing rate of 4.2% during 2021–2025 4 . Generally, NBR is filled with reinforcing fillers to illustrate good mechanical properties 5 – 8 .…”

Section: Introductionmentioning

confidence: 99%

Synthesis of vinyl-based silica nanoparticles by sol–gel method and their influences on network microstructure and dynamic mechanical properties of nitrile rubber nanocomposites

Ghamarpoor

Jamshidi

2022

Sci Rep

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Non-agglomeration and dispersion of silica nanoparticles in polymers and their interfacial interactions to polymer matrix are the most important factors that influence nanocomposites performance. In this work, vinyltriethoxysilane (VTES) as a low VOC emission coupling agent was used for surface modification of silica nanoparticles to prepare better dispersion in nitrile rubber (NBR) and improve its interfacial interactions to silica nanoparticles. The results of X-ray photoelectron spectroscopy, thermogravimetric analysis and Fourier transform infra-red spectroscopy demonstrated successful attachment of VTES molecules on the surface of silica nanoparticles. Dispersion of the modified silica nanoparticles in NBR matrix was studied using field emission scanning electron microscopy and rubber process analysis. Results demonstrated that VTES significantly improved dispersion of nanoparticles in rubbery matrix. The bound rubber content showed that VTES effectively built a bridge between the silica nanoparticles and the rubber matrix that led to promising mechanical performances and strong interfacial interactions. Effect of nanoparticle content on the mechanical performances (static/dynamic) of the NBR was evaluated. It was found that higher modulus and reinforcement indices was obtained at 3 and 5 wt% of nanoparticles. Moreover, these composites had extremely low rolling resistance, the best wet skid resistance and the lowest Heat-Build up.

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Section: Introductionmentioning

confidence: 99%

Synthesis of vinyl-based silica nanoparticles by sol–gel method and their influences on network microstructure and dynamic mechanical properties of nitrile rubber nanocomposites

Ghamarpoor

Jamshidi

2022

Sci Rep

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“…To achieve the goal of sustainable development in rubber industry, many new fillers have been employed. Among them, the abundant clays such as kaolinite [ 21 , 22 ], montmorillonite [ 23 , 24 ], hydrotalcite [ 25 , 26 ], vermiculite [ 27 , 28 ], sepiolite [ 29 , 30 ], and illite [ 31 , 32 , 33 , 34 , 35 , 36 , 37 , 38 , 39 ] have drawn great attention because of their low production price and carbon footprints. The reinforcement effect of these clays on rubber matrix is, however, not satisfactory.…”

Section: Introductionmentioning

confidence: 99%

Effect of 3-Mercaptopropyltriethoxysilane Modified Illite on the Reinforcement of SBR

et al. 2022

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To achieve the sustainable development of the rubber industry, the substitute of carbon black, the most widely used but non-renewable filler produced from petroleum, has been considered one of the most effective ways. The naturally occurring illite with higher aspect ratio can be easily obtained in large amounts at lower cost and with lower energy consumption. Therefore, the expansion of its application in advanced materials is of great significance. To explore their potential use as an additive for reinforcing rubber, styrene butadiene rubber (SBR) composites with illites of different size with and without 3-mercaptopropyltriethoxysilane (KH580) modification were studied. It was found that the modification of illite by KH580 increases the K-illite/SBR interaction, and thus improves the dispersion of K-illite in the SBR matrix. The better dispersion of smaller size K-illite with stronger interfacial interaction improves the mechanical properties of SBR remarkably, by an increment of about nine times the tensile strength and more than ten times the modulus. These results demonstrate, except for the evident effect of particle size, the great importance of filler–rubber interaction on the performance of SBR composites. This may be of great significance for the potential wide use of the abundant naturally occurring illite as substitute filler for the rubber industry.

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“…[15,16] The potential of SEP as a filler was broadly studied in various polymer matrices. [17] They included natural rubber (NR), [18,19] fluorinated polymer [20] epoxidized natural rubber (ENR), [21] and nitrile butadiene rubber. [22] In general, the chemical nature of the matrix and nanofiller, as well as the degree of nanofiller dispersion, have a significant impact on the properties of the nanocomposites prepared.…”

Section: Introductionmentioning

confidence: 99%

Curing, thermal, tensile and flammability characteristics of sepiolite/ethylene propylene diene monomer rubber composites with glut palmitate salt and silane coupling agents

et al. 2022

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The main objective of this work is to compare the effectiveness of a newly synthesized glut palmitate (GP) salt and a commercially available (3‐aminopropyl) trimethoxysilane (APTMS) as coupling agents in sepiolite (SEP) filled ethylene propylene diene monomer (EPDM/SEP) composites. The unmodified and modified composites with different amounts of SEP were prepared with an open two‐roll mill and the morphology, cure characteristics, tensile properties, flammability, and thermal stability were studied. Fourier transform infrared spectroscopy (FTIR) analysis indicated shifting of the related absorption peaks and confirmed the interaction between composite with the GP salt and APTMS and the successful modification of sepiolite particles in EPDM/SEP composites. The maximum torque (MH), scorch time (ts2) and cure time (t90) of the modified EPDM composites decreased with both coupling agents. Thermal stability reduced in the presence of coupling agents but the reduction is more pronounced in the composite with GP salt due to low‐temperature degradation of the fatty acid. Compared with unmodified EPDM/SEP, the tensile strength of the modified EPDM/SEP with GP and APTMS enhanced by 15% and 52%, respectively but both elongation at break and modulus were lowered. GP and APTMS were efficient coupling agents in linking the SEP and EPDM matrix, reducing the rubber‐filler interaction (Qf/Qg) from 1.00 for the EPDM/SEP composites to 0.76 and 0.64 for the EPDM/GP/SEP and EPDM/APTMS/SEP composites, respectively.

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The self-assembly of sepiolite and silica fillers for advanced rubber materials: The role of collaborative filler network

Cited by 23 publications

References 27 publications

Synthesis of vinyl-based silica nanoparticles by sol–gel method and their influences on network microstructure and dynamic mechanical properties of nitrile rubber nanocomposites

Synthesis of vinyl-based silica nanoparticles by sol–gel method and their influences on network microstructure and dynamic mechanical properties of nitrile rubber nanocomposites

Effect of 3-Mercaptopropyltriethoxysilane Modified Illite on the Reinforcement of SBR

Curing, thermal, tensile and flammability characteristics of sepiolite/ethylene propylene diene monomer rubber composites with glut palmitate salt and silane coupling agents

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