三羟甲基甲胺固-固相变的变温红外光谱研究

IR Spectra at Various Temperatures for Tris(hydroxymethyl)aminomethane

在 4 0 0 0～ 4 50 cm- 1波段范围内测定了三羟甲基甲胺 ( TAM)在 2 0～ 1 4 0℃的红外光谱 .研究发现 ,在1 3 0～ 1 3 5℃区间内 ,TAM的特征吸收峰的位置、形状、强度均发生较大变化 ,该温度区间与 TAM的固 -固相变温度1 3 4 .73℃相对应 .研究结果可以验证 TAM的固

The infrared spectra of tris(hydroxymethyl)aminomethane(TAM)in the range 4000～450 cm -1 were measured from 20℃ to 140℃.In the temperature range corresponding to the solid solid phase transition the characteristic absorption has a sudden change which can declare the mechanism of the solid solid phase transition of TAM.