Effects of the Size of Fillers on Viscoelasticity in the Glassy State of Poly(styrene-<i>co</i>-butadiene) Reinforced by Carbon Black

We investigated how the particle size of carbon black (CB) affects the reinforcement of CB to vulcanized poly(styrene-co-butadiene) (SBR) in the glassy state. When the average diameter of CB d is larger than 100 nm, the enhancement of the modulus can be expressed by the Eshelby/Mori–Tanaka model, which agrees with the results obtained for an SBR/silica system. On the other hand, at d < 100 nm, the volume fraction dependence of the enhancement becomes stronger than the theory’s prediction. The scattering studies on the SBR/CB systems revealed that the aggregates of CB at d < 100 nm consist of densely packed CB, while the aggregates of CB at d > 100 nm exhibit branch structures. At d < 100 nm, the voids or the occluded region in the packed CB increase the volume fraction, resulting in a stronger volume fraction dependence of the enhancement.

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Publication Details

Journal
Macromolecules
Published
2025-08-11
DOI
https://doi.org/10.1021/acs.macromol.5c01357
Primary Topic
Polymer Nanocomposites and Properties
Type
article
Field-Weighted Citation Impact
0.00

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article

Effects of the Size of Fillers on Viscoelasticity in the Glassy State of Poly(styrene-co-butadiene) Reinforced by Carbon Black

Yuki Watanabe, Ryuhei Motokawa, Tsukasa Miyazaki, Tsuyoshi Sugita et al.
Macromolecules
Polymer Nanocomposites and Properties
article

Effects of the Size of Fillers on Viscoelasticity in the Glassy State of Poly(styrene-co-butadiene) Reinforced by Carbon Black

Yuki Watanabe, Ryuhei Motokawa, Tsukasa Miyazaki, Tsuyoshi Sugita, Kazuki Mita, Takayuki Kumada, Motoki Shibata, Hitoshi IWABUKI, Daiki Kumagawa, Katsuhiro Yamamoto, Tadashi Inoue, Yuki Ueda, Mikihito Takenaka, Y. Nakanishi, Shu Karitani
article en

Abstract

We investigated how the particle size of carbon black (CB) affects the reinforcement of CB to vulcanized poly(styrene-co-butadiene) (SBR) in the glassy state. When the average diameter of CB d is larger than 100 nm, the enhancement of the modulus can be expressed by the Eshelby/Mori–Tanaka model, which agrees with the results obtained for an SBR/silica system. On the other hand, at d < 100 nm, the volume fraction dependence of the enhancement becomes stronger than the theory’s prediction. The scattering studies on the SBR/CB systems revealed that the aggregates of CB at d < 100 nm consist of densely packed CB, while the aggregates of CB at d > 100 nm exhibit branch structures. At d < 100 nm, the voids or the occluded region in the packed CB increase the volume fraction, resulting in a stronger volume fraction dependence of the enhancement.

MacromoleculesVol. 58(16)
Japan Atomic Energy Agency (JP), Nagoya Institute of Technology (JP), Kyoto University (JP), Division of Materials Research (US), Comprehensive Research Organization for Science and Society (JP), Kyoto Katsura Hospital (JP), Instituto de Investigaciones Químicas (ES), Industrial Technology Center of Okayama Prefecture (JP), The University of Osaka (JP)
Japan Society for the Promotion of Science
Openalex Percentile: Top 82%
Polymer Nanocomposites and Properties
DOISourceOpenAlex
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