Volume 137, Issue 5 48332
Article

Novel CNC/silica hybrid as potential reinforcing filler for natural rubber compounds

Syed Danish Ali

Syed Danish Ali

Corimav-Pirelli, Department of Material Science, University of Milano-Bicocca, Via R. Cozzi 53, Milan, 20126 Italy

Nanoscience and Technology Department, National Centre for Physics, 45320 Islamabad, Pakistan

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Iikpoemugh Elo Imiete

Iikpoemugh Elo Imiete

Corimav-Pirelli, Department of Material Science, University of Milano-Bicocca, Via R. Cozzi 53, Milan, 20126 Italy

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Marco Emilio Orlandi

Marco Emilio Orlandi

Department of Earth and Environmental Sciences, University of Milano-Bicocca, Piazza della Scienza 1, Milan, 20126 Italy

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Luca Castellani

Luca Castellani

Pirelli Tyre S.p.A, Viale Sarca 222, Milan, 20126 Italy

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Thomas Hanel

Thomas Hanel

Pirelli Tyre S.p.A, Viale Sarca 222, Milan, 20126 Italy

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Luca Zoia

Corresponding Author

Luca Zoia

Department of Earth and Environmental Sciences, University of Milano-Bicocca, Piazza della Scienza 1, Milan, 20126 Italy

Correspondence to: L. Zoia (E-Mail: [email protected])Search for more papers by this author
First published: 05 August 2019
Citations: 15

ABSTRACT

This work describes the development of a low-density, renewable, and high reinforcing filler for natural rubber (NR) compounds. The cellulose nanocrystal (CNC)-based hybrid filler was synthesized by decorating the surface of CNCs with silica using a simple and efficient coprecipitation method. The properties of the prepared hybrid were investigated by field emission scanning electron microscopy, Fourier transform infrared spectroscopy, X-ray diffraction, nitrogen physisorption measurements, and Thermogravimetric analysis. Then, the prepared hybrid was incorporated in NR using two different approaches, namely, dry mixing and coprecipitation. The dynamic and tensile mechanical properties of the hybrid/NR compounds were evaluated indicating that: the coprecipitation method was found much more effective for homogeneous dispersion and the CNC/silica hybrid provided quite higher reinforcement to NR than reference silica; however, much lower density of the final compounds was obtained. © 2019 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2020, 137, 48332.

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