Study of Crystal Defects and Spectroscopy Characteristics of Ammonium Polyphosphate  

作　　者：仪德启 杨荣杰 

机构地区：[1]School of Material Science and Engineering,Beijing Institute of Technology

出　　处：《Journal of Beijing Institute of Technology》2009年第2期238-242,共5页北京理工大学学报（英文版）

基　　金：Sponsored by the National Key Technology R&D Program(2006BAE03B05-2)

摘　　要：Two kinds of commercial ammonium polyphosphate （APP） and three kinds of APP which were prepared in the laboratory were studied by X-ray diffraction （XRD）, Fourier transforms infrared spectroscopy （FTIR）, scanning electron microscopy （SEM） and transmission electron microscopy （TEM）. In identification of the form Ⅱ crystal APP by XRD and FTIR, some discrepancies were discussed. It is pointed out that the absorbance of the FTIR spectra at 682 cm^-1 can exist not only in the form Ⅰ APP, but also in the form Ⅱ APP with the crystal lattice defects. The SEM images indicate that the form Ⅱ APP is of multilayer crystal structure. XRD and TEM can reveal the crystal lattice defects.Two kinds of commercial ammonium polyphosphate （APP） and three kinds of APP which were prepared in the laboratory were studied by X-ray diffraction （XRD）, Fourier transforms infrared spectroscopy （FTIR）, scanning electron microscopy （SEM） and transmission electron microscopy （TEM）. In identification of the form Ⅱ crystal APP by XRD and FTIR, some discrepancies were discussed. It is pointed out that the absorbance of the FTIR spectra at 682 cm^-1 can exist not only in the form Ⅰ APP, but also in the form Ⅱ APP with the crystal lattice defects. The SEM images indicate that the form Ⅱ APP is of multilayer crystal structure. XRD and TEM can reveal the crystal lattice defects.

关 键 词：ammonium polyphosphate（APP） infrared spectroscopy X-ray diffraction crystal defects 

分 类 号：O77[理学—晶体学] TQ314.248[化学工程—高聚物工业]