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Reinforcement of Solution Styrene Butadiene Rubber by Silane Functionalized Halloysite Nanotubes

We describe a nanocomposite based on solution styrene butadiene rubber (SSBR) and naturally occurring tube-like nanoparticles called halloysite nanotubes (HNT). Highly hydrophilic HNT nanotubes were modified by different silane coupling agents namely diethoxydimethyl silane (DMS) and bis[3-(triethox...

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Bibliographic Details
Published in:Journal of macromolecular science. Part A, Pure and applied chemistry Pure and applied chemistry, 2013-01, Vol.50 (11), p.1091-1106
Main Authors: Raman, V. S., Rooj, S., Das, A., Stöckelhuber, K. W., Simon, F., Nando, G. B., Heinrich, G.
Format: Article
Language:English
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Summary:We describe a nanocomposite based on solution styrene butadiene rubber (SSBR) and naturally occurring tube-like nanoparticles called halloysite nanotubes (HNT). Highly hydrophilic HNT nanotubes were modified by different silane coupling agents namely diethoxydimethyl silane (DMS) and bis[3-(triethoxysilyl)­propyl]tetrasulfide (TESPT) to ensure good dispersion of these nanoparticles in the hydrophobic SSBR matrix. Fourier transform infrared (FTIR) spectroscopy and X-ray photoelectron spectroscopy (XPS) were used to characterize the functional groups on the surface of the HNT after the silane modification. Contact angle measurements, thermogravimetric analysis (TGA), scanning electron microscopy (SEM) and transmission electron microscopy (TEM) were also carried out to understand the extent of modification. The reinforcing effect of modified HNT in SSBR matrix was perceived from both static and dynamic mechanical properties. The tensile strength and elongation at break of the modified HNT filled SSBR nanocomposites are found to be much higher than that of pristine HNT (pHNT) filled nanocomposites. In addition, transmission electron microscopic analysis unveiled the fact that, owing to more rubber-filler interaction modified HNT dispersed in a very fine state as compared with pHNT.
ISSN:1060-1325
1520-5738
DOI:10.1080/10601325.2013.829349