Dissolution–precipitation approach for long-term stable low-friction composites consisting of mesoporous TiO2 nanospheres and carbon black in Poly(Vinylidene fluoride) matrix

Min Su Park; Chang Soo Lee; Jae Hun Lee; Du Yeol Ryu; Jong Hak Kim

doi:10.1016/j.triboint.2020.106187

Dissolution–precipitation approach for long-term stable low-friction composites consisting of mesoporous TiO₂ nanospheres and carbon black in Poly(Vinylidene fluoride) matrix

Min Su Park, Chang Soo Lee, Jae Hun Lee, Du Yeol Ryu, Jong Hak Kim

Department of Chemical and Biomolecular Engineering

Research output: Contribution to journal › Article

Abstract

Low-friction composites with long-term stability based on three-dimensional, mass-producible mesoporous TiO₂ nanospheres (MTNs) with a large surface area and carbon black (CB) dispersed in a poly (vinylidene fluoride) (PVDF) matrix were developed via dissolution–precipitation approach. The interaction and miscibility were enhanced by the incorporation of a small amount of CB filler. A long-term test (4 h) indicated that the incorporation of 5% MTN reduced both the friction coefficient (0.480) and the specific wear rate (0.412 × 10⁻⁴ mm³ N⁻¹ m⁻¹) compared with neat PVDF. The friction coefficient (0.446) was further reduced by the addition of CB (MTN_15CB with 15% MTN) owing to the increased fraction of the nonpolar α phase in the PVDF and the good adhesion properties of the composites.

Original language	English
Article number	106187
Journal	Tribology International
Volume	145
DOIs	https://doi.org/10.1016/j.triboint.2020.106187
Publication status	Published - 2020 May

All Science Journal Classification (ASJC) codes

Mechanics of Materials
Mechanical Engineering
Surfaces and Interfaces
Surfaces, Coatings and Films

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Park, M. S., Lee, C. S., Lee, J. H., Ryu, D. Y., & Kim, J. H. (2020). Dissolution–precipitation approach for long-term stable low-friction composites consisting of mesoporous TiO₂ nanospheres and carbon black in Poly(Vinylidene fluoride) matrix. Tribology International, 145, [106187]. https://doi.org/10.1016/j.triboint.2020.106187

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title = "Dissolution–precipitation approach for long-term stable low-friction composites consisting of mesoporous TiO2 nanospheres and carbon black in Poly(Vinylidene fluoride) matrix",

abstract = "Low-friction composites with long-term stability based on three-dimensional, mass-producible mesoporous TiO2 nanospheres (MTNs) with a large surface area and carbon black (CB) dispersed in a poly (vinylidene fluoride) (PVDF) matrix were developed via dissolution–precipitation approach. The interaction and miscibility were enhanced by the incorporation of a small amount of CB filler. A long-term test (4 h) indicated that the incorporation of 5% MTN reduced both the friction coefficient (0.480) and the specific wear rate (0.412 × 10−4 mm3 N−1 m−1) compared with neat PVDF. The friction coefficient (0.446) was further reduced by the addition of CB (MTN_15CB with 15% MTN) owing to the increased fraction of the nonpolar α phase in the PVDF and the good adhesion properties of the composites.",

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AU - Ryu, Du Yeol

AU - Kim, Jong Hak

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