Reinforced chloroprene rubber by in situ generated silica particles: Evidence of bound rubber on the silica surface
Bharat P. Kapgate
Department of Chemistry, Visvesvaraya National Institute of Technology, Nagpur, India
Search for more papers by this authorCorresponding Author
Chayan Das
Department of Chemistry, Visvesvaraya National Institute of Technology, Nagpur, India
Correspondence to: C. Das (E-mail: [email protected] or [email protected])Search for more papers by this authorAmit Das
Leibniz-Institut für Polymerforschung Dresden e.V., Dresden, Germany
Tampere University of Technology, Tampere, Finland
Search for more papers by this authorDebdipta Basu
Leibniz-Institut für Polymerforschung Dresden e.V., Dresden, Germany
Search for more papers by this authorSven Wiessner
Leibniz-Institut für Polymerforschung Dresden e.V., Dresden, Germany
Technische Universität Dresden, Institut Für Werkstoffwissenschaft, Dresden, Germany
Search for more papers by this authorUta Reuter
Leibniz-Institut für Polymerforschung Dresden e.V., Dresden, Germany
Search for more papers by this authorGert Heinrich
Leibniz-Institut für Polymerforschung Dresden e.V., Dresden, Germany
Technische Universität Dresden, Institut Für Werkstoffwissenschaft, Dresden, Germany
Search for more papers by this authorBharat P. Kapgate
Department of Chemistry, Visvesvaraya National Institute of Technology, Nagpur, India
Search for more papers by this authorCorresponding Author
Chayan Das
Department of Chemistry, Visvesvaraya National Institute of Technology, Nagpur, India
Correspondence to: C. Das (E-mail: [email protected] or [email protected])Search for more papers by this authorAmit Das
Leibniz-Institut für Polymerforschung Dresden e.V., Dresden, Germany
Tampere University of Technology, Tampere, Finland
Search for more papers by this authorDebdipta Basu
Leibniz-Institut für Polymerforschung Dresden e.V., Dresden, Germany
Search for more papers by this authorSven Wiessner
Leibniz-Institut für Polymerforschung Dresden e.V., Dresden, Germany
Technische Universität Dresden, Institut Für Werkstoffwissenschaft, Dresden, Germany
Search for more papers by this authorUta Reuter
Leibniz-Institut für Polymerforschung Dresden e.V., Dresden, Germany
Search for more papers by this authorGert Heinrich
Leibniz-Institut für Polymerforschung Dresden e.V., Dresden, Germany
Technische Universität Dresden, Institut Für Werkstoffwissenschaft, Dresden, Germany
Search for more papers by this authorABSTRACT
Nano silica is generated in situ inside the uncrosslinked chloroprene rubber (CR) by the sol-gel reaction of tetraethoxysilane (TEOS). This results in appreciable improvement in mechanical properties of the CR composites at relatively low filler content. Furthermore, exploitation of reactive organosilanes, γ-aminopropyltrimethoxysilane (γ-APS) in particular, in the silica synthesis process facilitates growing of spherical silica particles with a size distribution in the range of 20-50 nm. The silica particles are found to be uniformly dispersed and they do not suffer from filler-filler interaction. Additionally, it is observed that the silica particles are coated by silane and rubber chains together which are popularly known as bound rubber. The existence of the bound rubber on silica surface has been supported by the detailed investigations with transmission electron microscopy (TEM), energy filtered transmission electron microscopy (EFTEM) and energy dispersive X-ray spectroscopy (EDAX). The interaction between rubber and silica, via bi-functionality of the γ-APS, has been explored by detailed FTIR studies. © 2016 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2016, 133, 43717.
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