摘要
测定了三个系列玻璃组成红外光谱。并且,对红外吸收谱带的归属进行了讨论。测定的结果表明: 对于组成为(80-X)P_2O_5-20Li_2O-XMnO_2(X=0,10,20,30,40,50,55)玻璃系列,随着MnO_2含量的增加,逐步取代P_2O_5,P=0键伸缩振动频率朝低波数方向移动。当MnO_2含量为40mol％时,谱带消失而出现新的谱带。在组成为(75-x)P_2O_5-XLi_2O-25MnO_2(x=0.10.20.25 30.40,45)玻璃中,当P_2O_5含量较低时,随着Li_2O含量的增加,P=0键逐渐被破坏,一直到Li_2O含量为35mol％,P=0键消失。在组成为5DP_2O_5-(50-x)Lb_2O-xMnO_2r(x=0,5,10,20,25,30,35,40,45,50)玻璃中,随着MnO_2含量的增加,逐步取代Li_2O,振动频率和峰的强度只是发生微小的变化。
The infrared spectra of three glass compositions have been measured. Absorption bands and mode attri- butions have been fully discussed. The infrared data of the system (80-X) P_2O_5-20Li_2O-XMnO_2 (X=0,10,20,30,40,40,55) suggest that the P=0 bond stretching band shifts to lower wave numbers with increasing MnO_2content and disappears at about 40 mol% MnO_2content. In the system (75-X) P_2O_5-XLi_2O-25MnO_2 (X=0,10,20,25,30,40,45) the infrared data suggest that with increasing Li_2O content progresive rupture of P=0 bonds take place go that these bonds have more or less disappeared at about 35 mol% Li_2O content. In the system 50P_2O_5-(50-X)Li_2O-XMnO_2(X=0,5,10,15,20,25,30,35,40,45,50) the infrared spectra show that with increasing MnO_2 content slight change in vibrational frequencies and intensities take place merely.
关键词
玻璃
结构
红外光谱
IR spectra, Structure, P=0 stretching vibration, P-O-P stretching vibration
