Volume 136, Issue 46 48243
Article

Promoted dispersion of silica and interfacial strength in rubber/silica composites by grafting with oniums

Peijin Weng

Peijin Weng

Department of Polymer Materials and Engineering, State Key Laboratory of Pulp and Paper Engineering, South China University of Technology, Guangzhou, 510640 People's Republic of China

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Zhenghai Tang

Zhenghai Tang

Department of Polymer Materials and Engineering, State Key Laboratory of Pulp and Paper Engineering, South China University of Technology, Guangzhou, 510640 People's Republic of China

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Jing Huang

Jing Huang

Department of Polymer Materials and Engineering, State Key Laboratory of Pulp and Paper Engineering, South China University of Technology, Guangzhou, 510640 People's Republic of China

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Siwu Wu

Siwu Wu

Department of Polymer Materials and Engineering, State Key Laboratory of Pulp and Paper Engineering, South China University of Technology, Guangzhou, 510640 People's Republic of China

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Baochun Guo

Corresponding Author

Baochun Guo

Department of Polymer Materials and Engineering, State Key Laboratory of Pulp and Paper Engineering, South China University of Technology, Guangzhou, 510640 People's Republic of China

Correspondence to: B. Guo (E-mail: [email protected])Search for more papers by this author
First published: 13 July 2019
Citations: 19

ABSTRACT

The dispersion of filler and interfacial interaction are crucial in determining the properties of rubber composites. Aiming to improve the dispersion and filler–rubber interaction, we introduce rubber graft bearing oniums in a rubber/silica composite. To fulfill this goal, the graft, which is prepared via thio-ene click reaction between 1-methylimidazolium mercaptopropionate (MMP) and the pendent vinyl groups of a solution-polymerized styrene-butadiene rubber (SSBR), is introduced into the silica-filled styrene-butadiene rubber (SBR) composite. The dispersion of silica and interfacial interaction are improved via hydrogen bonding interaction. Moreover, the graft exhibits catalytic effect toward the silanization, which can improve interfacial interaction in the composites with bis [3-(triethoxysilyl) propyl] tetrasulfide. With 2 phr of the graft, the tensile modulus (stress at 300% strain) is increased by 18% and the abrasion loss is decreased by 31%. This study opens a new attempt to improve the filler dispersion and filler–rubber interaction in the composites with onium-bearing polymers. © 2019 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2019, 136, 48243.

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