Wypych Fernando, Schreiner Wido H, Richard Emerson
Centro de Pesquisas em Química Aplicada, CEPESQ, Departamento de Química, Universidade Federal do Paraná, UFPR, CP 19081, 81531-990 Curitiba, PR, Brazil.
J Colloid Interface Sci. 2004 Aug 1;276(1):167-73. doi: 10.1016/j.jcis.2004.03.022.
The products of reaction of natural chrysotile fibers with phenylarsonic acid or 2-nitrophenol-4-arsonic acid are described. The new grafted layered materials with basal spacing of 15.5 and 17.0 A were characterized by powder X-ray diffraction, thermal analysis, X-ray photoelectron spectroscopy, and Fourier transform infrared spectroscopy. The experimental data are consistent with the grafting of phenylarsonate and 2-nitrophenol-4-arsonate groups onto the surface of the disordered silica, obtained by the in situ acidic leaching of the brucite-like sheets starting from the original chrysotile structure.
描述了天然温石棉纤维与苯胂酸或2-硝基苯酚-4-胂酸反应的产物。通过粉末X射线衍射、热分析、X射线光电子能谱和傅里叶变换红外光谱对新的接枝层状材料进行了表征，其层间距分别为15.5和17.0埃。实验数据与从原始温石棉结构出发，通过水镁石状片层的原位酸浸得到的无序二氧化硅表面接枝苯胂酸酯和2-硝基苯酚-4-胂酸酯基团的情况一致。
