期刊
APPLIED CLAY SCIENCE
卷 67-68, 期 -, 页码 44-49出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.clay.2012.07.002
关键词
Natural rubber (NR); Styrene butadiene rubber (SBR); Palygorskite (PA); Cerium oxide (CeO2); Nanocomposites
资金
- Shanghai Science and Technology Commission [09DZ1203902]
- National High Technology Research and Development Program (863 Program) of China [2007AA03Z335]
- Shanghai University [SHUCX101050]
Palygorskite (PA)-cerium oxide (CeO2) was modified with cetyl-trimethylammonium bromide (CTAB) to be used as filler of high-performance natural rubber (NR)/styrene butadiene rubber (SBR) nanocomposites. The microstructure of the filler and the rubber nanocomposites were characterized by transmission electron microscope (TEM), X-ray diffraction (XRD), high-resolution TEM (HRTEM), selected area electron diffraction (SAED). Fourier transform infrared spectroscopy (FTIR), scanning electron microscope (SEM) and thermal gravimetric analysis (TGA). The TEM/HRTEM images and XRD/SAED patterns revealed that face-centered cubic CeO2 nanoparticles with an average diameter of 5 nm were homogeneously distributed on the surfaces of the PA fibers. The influences of CTAB modified PA-CeO2 (GAB-PA-CeO2) on the curing, morphological, mechanical and thermal properties of the rubber nanocomposites were investigated. The curing measurements indicated that the addition of CTAB-PA-CeO2 increased the crosslink density and shortened the curing process of the rubber nanocomposites. The SEM and TEM images demonstrated that the CTAB-PA-CeO2 fibers were homogeneously distributed within the NR/SBR matrix. The nanoscale dispersion of CTAB-PA-CeO2 and adequate rubber/filler interactions as well as the special rubber/filler network resulted in an obvious reinforcement. The TGA curves illustrated that the thermal stability of the rubber nanocomposites was also improved due to the addition of GAB-PA-CeO2. Crown Copyright (C) 2012 Published by Elsevier B.V. All rights reserved.
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