Synthesis, thermal and structural characterization of nanocomposites for potential applications in construction

被引:0
作者
S. C. Mojumdar
L. Raki
机构
[1] National Research Council of Canada,Institute for Research in Construction
来源
Journal of Thermal Analysis and Calorimetry | 2006年 / 86卷
关键词
C–S–H; DSC; DTG; FTIR spectroscopy; nanocomposites; PAA; SEM; TG; XRD;
D O I
暂无
中图分类号
学科分类号
摘要
Several calcium silicate hydrate (C–S–H)-polymer nanocomposite (C–S–HPN) materials have been prepared by incorporating poly(acrylic acid) (PAA) into the inorganic layers of C–S–H during precipitation of quasicrystalline C-S-H from aqueous solution. The synthetic C–S–HPN materials were characterized by X-ray fluorescence (XRF), X-ray diffraction (XRD), Fourier-transform infrared (FTIR) spectroscopy, scanning electron microscopy/energy dispersive spectroscopy (SEM-EDS), thermogravimetry (TG), differential thermogravimetry (DTG) and differential scanning calorimetry (DSC). The XRD peaks of C–S–HPN materials suggest the intermediate organizations presenting both intercalation of PAA and exfoliation of C–S–H. The SEM images of C–S–H and C–S–HPN materials with different PAA contents exhibit the significant differences in their morphologies. Effects of the material compositions on the thermal stability of series of C–S–HPN materials along with PAA and C–S–H has been studied by TG, DTG and DSC. Three significant decomposition temperature ranges were observed on the TG curves of all C–S–HPN materials.
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页码:651 / 657
页数:6
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