硅橡胶甲基弯曲振动模式的三级红外光谱研究  

Study on Third-step Infrared Spectroscopy of Silicone Methyl Bending Vibration Mode

作　　者：武玉洁 封卓帆 殷俊荣 辛畅 肖霄[2] 于宏伟[2] WU Yu-jie;FENG Zhuo-fan;YIN Jun-rong;XIN Chang;XIAO Xiao;YU Hong-wei(Hebei Yipin Pharmaceutical Co.,Ltd.,Shijiazhuang 052165,Hebei;School of Chemical Engineering,Shijiazhuang University,Shijiazhuang 050035,Hebei)

机构地区：[1]河北一品制药股份有限公司,石家庄052165 [2]石家庄学院化工学院,石家庄050035

出　　处：《有机硅材料》2019年第5期395-402,共8页Silicone Material

基　　金：石家庄市麻醉药技术创新中心自研项目(201901);石家庄市藁城区科学技术研究与发展计划(G201804)

摘　　要：采用红外光谱(IR)研究了硅橡胶结构,并以硅橡胶甲基弯曲振动(δCH3-silicone)为研究对象,进一步研究了硅橡胶的变温红外光谱(TD-IR)和二维红外光谱(2D-IR)。结果表明,随着测定温度的升高,硅橡胶δCH3-silicone对应的吸收强度及频率发生明显改变。硅橡胶δCH3-silicone包括面内弯曲振动(βCH3-silicone)和面外弯曲振动(γCH3-silicone)。硅橡胶βCH3-silicone对应的吸收频率为1413 cm^-1(βCH3-1-silicone)和1404 cm^-1(βCH3-2-silicone),热扰动下硅橡胶βCH3-silicone吸收峰变化快慢顺序为:1413 cm^-1(βCH3-1-silicone)>1404 cm-1(βCH3-2-silicone)。硅橡胶γCH3-silicone对应的吸收频率为1260 cm^-1(γCH3-1-silicone)和1253 cm^-1(γCH3-2-silicone),热扰动下硅橡胶γCH3-silicone吸收峰变化快慢顺序为:1260 cm^-1(γCH3-1-silicone)>1253 cm^-1(γCH3-2-silicone)。The structure of silicone rubber was studied by infrared spectroscopy(IR).The temperature-dependent infrared spectroscopy(TD-IR)and two-dimensional infrared spectroscopy(2D-IR)of silicone rubber were further studied by taking silicone rubber methyl bending vibration(δCH3-silicone)as the research object.Results show that with the increase of the measured temperature,the infrared absorption intensity and frequency of siliconeδCH3-silicone changed obviously.The bending vibration of the silicone rubber methylationδCH3-silicone includes in-plane bending vibration(βCH3-silicone)and out-of-plane bending vibration(γCH3-silicone).The band resulting from the siliconeβCH3-silicone are 1413 cm-1(βCH3-1-silicone)and 1404 cm-1(βCH3-2-silicone),but the infrared absorption peak of intensity changes is 1413 cm-1(βCH3-1-silicone)>1404 cm-1(βCH3-2-silicone).The band resulting from the siliconeγCH3-siliconeappears near 1260 cm-1(γCH3-1-silicone)and 1253 cm-1(γCH3-2-silicone),and the sequence of infrared absorption peak changes are 1260 cm-1(γCH3-1-silicone)>1253 cm-1(γCH3-2-silicone).

关 键 词：硅橡胶 红外光谱 变温红外光谱 二维红外光谱 热稳定性 

分 类 号：O434.3[机械工程—光学工程]