Rubber Blend of 80/20 NR/SBR Reinforced with Nanosilica and PS-Encapsulated Nanosilica

Anyaporn Boonmahitthisud; Zheng Hua Song

doi:10.4028/www.scientific.net/MSF.695.332

Paper Titles

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Rubber Blend of 80/20 NR/SBR Reinforced with Nanosilica and PS-Encapsulated Nanosilica
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Electrochemical Synthesis of Sensitive Layer of Polyaniline/Multi Wall Carbon Nanotube Composite
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HomeMaterials Science ForumMaterials Science Forum Vol. 695Rubber Blend of 80/20 NR/SBR Reinforced with...

Rubber Blend of 80/20 NR/SBR Reinforced with Nanosilica and PS-Encapsulated Nanosilica

Abstract:

In this study, rubber blend of natural rubber (NR) and styrene butadiene rubber (SBR) at 80/20 NR/SBR was reinforced with nanosilica (nSiO₂) and polystyrene-encapsulated nanosilica (PS-nSiO₂) in the latex state. The latex of PS-nSiO₂was synthesized by in situ differential microemulsion polymerization using sodium dodecyl sulfate and azobisisobutyronitrile as the surfactant and initiator, respectively. The nanoparticles at the amount of 0.1, 0.2, 0.3 and 0.4 parts per hundred of rubber (based on dry weight of nSiO₂) were dispersed in the rubber blend compound and subsequently cured at 80°C for 3 h to prepare rubber nanocomposites. Using this technique, nanoparticles could be well dispersed in the rubber matrix. The influences of the nSiO₂ and PS-nSiO₂on the mechanical and thermal properties of the resulting nanocomposites were quantified and compared. It is found that the tensile properties and thermal stability of the rubber blends were improved with the appropriate amounts of the nanofillers. However, the PS-nSiO₂exhibited reinforcing efficiency superior to nSiO₂ with the same nSiO₂ content due to the stronger rubber-filler interfacial adhesion.

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Periodical:

Materials Science Forum (Volume 695)

Pages:

332-335

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.695.332

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Online since:

July 2011

Authors:

Anyaporn Boonmahitthisud, Zheng Hua Song

Keywords:

Differential Microemulsion Polymerization, Nanosilica, Natural Rubber (NR), PS-Encapsulated Nanosilica, Sequencing Batch Reactor (SBR)

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