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Open AccessArticle

Physicochemical Characterization of Functional Lignin–Silica Hybrid Fillers for Potential Application in Abrasive Tools

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Faculty of Chemical Technology, Institute of Chemical Technology and Engineering, Poznan University of Technology, Berdychowo 4, Poznan PL-60965, Poland
2
Faculty of Construction Engineering and Management, Institute of Materials Technology, Poznan University of Technology, Piotrowo 3, Poznan PL-61138, Poland
*
Authors to whom correspondence should be addressed.
Academic Editor: Susana C. M. Fernandes
Materials 2016, 9(7), 517; https://doi.org/10.3390/ma9070517
Received: 28 April 2016 / Revised: 30 May 2016 / Accepted: 20 June 2016 / Published: 25 June 2016
(This article belongs to the Special Issue Advances in Functionalization of Lignocellulosic Materials)
Functional lignin–SiO2 hybrid fillers were prepared for potential application in binders for phenolic resins, and their chemical structure was characterized. The properties of these fillers and of composites obtained from them with phenolic resin were compared with those of systems with lignin or silica alone. The chemical structure of the materials was investigated by Fourier transform infrared spectroscopy (FT-IR) and carbon-13 nuclear magnetic resonance spectroscopy (13C CP MAS NMR). The thermal stability of the new functional fillers was examined by thermogravimetric analysis–mass spectrometry (TG-MS). Thermo-mechanical properties of the lignin–silica hybrids and resin systems were investigated by dynamic mechanical thermal analysis (DMTA). The DMTA results showed that abrasive composites with lignin–SiO2 fillers have better thermo-mechanical properties than systems with silica alone. Thus, fillers based on lignin might provide new, promising properties for the abrasive industry, combining the good properties of lignin as a plasticizer and of silica as a filler improving mechanical properties. View Full-Text
Keywords: lignin–silica fillers; lignin; phenolic resins; thermo-mechanical and physicochemical properties; abrasive tools lignin–silica fillers; lignin; phenolic resins; thermo-mechanical and physicochemical properties; abrasive tools
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Strzemiecka, B.; Klapiszewski, Ł.; Jamrozik, A.; Szalaty, T.J.; Matykiewicz, D.; Sterzyński, T.; Voelkel, A.; Jesionowski, T. Physicochemical Characterization of Functional Lignin–Silica Hybrid Fillers for Potential Application in Abrasive Tools. Materials 2016, 9, 517.

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