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Synthesis and Mechanical Properties of Organic–Inorganic Hybrid Materials from Lignin and Polysiloxanes
Author(s) -
Lippach Andreas K. W.,
Krämer Ramona,
Hansen Michael R.,
Roos Stephan,
Stöwe Klaus,
Stommel Markus,
Wenz Gerhard,
Maier Wilhelm F.
Publication year - 2012
Publication title -
chemsuschem
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.412
H-Index - 157
eISSN - 1864-564X
pISSN - 1864-5631
DOI - 10.1002/cssc.201200095
Subject(s) - lignin , magic angle spinning , hybrid material , chemical engineering , materials science , fourier transform infrared spectroscopy , polymer , attenuated total reflection , kraft paper , spectroscopy , infrared spectroscopy , chemistry , polymer chemistry , organic chemistry , nuclear magnetic resonance spectroscopy , composite material , physics , quantum mechanics , engineering
The preparation of silica‐containing organic–inorganic hybrid materials composed of kraft lignin, alkoxysilanes, and organic linkers was investigated. 3‐Glycidyloxypropyltrimethoxysilane, 3‐(triethoxysilyl)propylisocyanate (IPTES), and bis(trimethoxysilyl)hexane were selected as the most promising linkers. The best materials obtained showed improved mechanical and thermal properties compared with lignin itself. The reaction of the hydroxyl groups with IPTES and the sol–gel reaction between the organic linker molecules were studied by attenuated total reflectance FTIR and solid‐state 29 Si magic‐angle spinning NMR spectroscopy. The homogeneous composition was demonstrated by electron microscopy and energy‐dispersive X‐ray spectroscopy mapping. The mechanical properties were investigated by microindentation and dynamic mechanical thermal analysis.