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- Title
Original Basic Activation for Enhancing Silica Particle Reactivity: Characterization by Liquid Phase Silanization and Silica-Rubber Nanocomposite Properties.
- Authors
Moretto, Enzo; Yan, Chuanyu; Dieden, Reiner; Steiner, Pascal; Duez, Benoît; Lenoble, Damien; Thomann, Jean-Sébastien
- Abstract
Silica fillers are used in various nanocomposites in combination with silanes as a reinforcing filler. In tire technology, silica is generally functionalized before (pre-treated) or during mixing (in-situ silanization or post-treated). In both cases, a soft base catalyst (e.g., triethylamine or diphenyl guanidine, DPG) is typically used to accelerate and increase the yield of the silane/silica coupling reaction. In this study, we investigated how pre-treatments of silica particles with either strong amine or hydride bases impact the silanization of silica prior to or during SBR mixing for silica-rubber nanocomposite fabrication. Our findings are supported by molecular characterization (solid state 29Si NMR, 1H NMR and TGA), and scanning electron microscopy. In addition, the impact of these silica pre-treatments on a nanocomposite's mechanical properties was evaluated using dynamic mechanical analysis (DMA).
- Subjects
SILANIZATION; DYNAMIC mechanical analysis; BASE catalysts; NANOCOMPOSITE materials; SCANNING electron microscopy
- Publication
Polymers (20734360), 2022, Vol 14, Issue 9, p1676
- ISSN
2073-4360
- Publication type
Article
- DOI
10.3390/polym14091676