Palygorskite-cerium oxide filled rubber nanocomposites

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• 作者：Guozhang Zhao^a ; ^b ; ^{zhaoguozhang521@163.com} ; Liyi Shi^a ; ^b ; ^{hardmetal0810@163.com} ; Xin Feng^a ; Weijun Yu^b ; Dengsong Zhang^a ; Jifang Fu^a
• 关键词：Natural rubber (NR) ; Styrene butadiene rubber (SBR) ; Palygorskite (PA) ; Cerium oxide (CeO2) ; Nanocomposites
• 刊名：Applied Clay Science
• 出版年：2012
• 出版时间：October, 2012
• 年：2012
• 卷：67-68
• 期：Complete
• 页码：44-49
• 全文大小：1718 K

文摘

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 (CTAB-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 CTAB-PA-CeO₂.