首页|硅氧树脂 Si-O 键伸缩振动模式 ATR 红外光谱研究?

硅氧树脂 Si-O 键伸缩振动模式 ATR 红外光谱研究?

扫码查看
原文链接
  • NETL
  • NSTL
  • 万方数据
在303~393 K 温度范围内，采用变温傅里叶变换衰减全反射红外光谱(ATR-FTIR)技术分别测定硅氧树脂的一维红外光谱、二阶导数红外光谱和四阶导数红外光谱。研究发现，在1800~600 cm-1范围内，聚硅氧树脂主要存在着 CH 3伸缩振动模式(νCH3)、CH 3变形振动模式(δCH3)、CH 3摇摆振动模式(ρCH3)、Si-O 伸缩振动模式(νSi-O )和 Si-C 伸缩振动模式(νSi-C )。在1100~1000 cm-1范围内，以νSi-O 为研究对象，研究了温度对硅氧树脂分子结构的影响。实验发现，随着测定温度的升高，硅氧树脂νSi-O 的主要红外吸收频率出现了明显的红移现象。进一步研究了硅氧树脂νSi-O 的二维红外光谱，考查温度对于νSi-O 红外吸收强度的影响。研究发现，随着测定温度的升高，硅氧树脂νSi-O 红外吸收强度的变化快慢顺序为：1024 cm-1>1096 cm-1>1010 cm-1>1076 cm-1>1083 cm-1>1064 cm-1。本研究拓展了 ATR-FTIR 技术在硅氧树脂材料热变性方面的研究范围。
Fourier Transform Attenuated Total Reflection Infrared Spectroscopy Study of Polysiloxanes Si-O Stretch Vibration
The polysiloxanes molecular structure had been studied by one-dimensional infrared spectroscopy, second derivative infrared spectroscopy and fourth derivative infrared spectroscopy with fourier transform attenuated total reflection infrared spectroscopy (ATR-FTIR)in the temperature range from 303 K to 393 K.The CH 3 stretch vibration mode (νCH3 ),the CH 3 bending vibration mode (δCH3 ),the CH 3 swing vibration mode (ρCH3 ),the Si-O stretch vibration mode (νSi-O )and the Si-C stretch vibration mode (νSi-C )were found from 1800 cm-1 to 600 cm-1 .The tempe-rature effect of the polysiloxanes molecular structure had been studied byνSi-O from 1 100 cm-1 to 1000 cm-1 and red shift was found obviously.Two-dimensional infrared spectroscopy of polysiloxanes was studied to determine the se-quence of intensity changes.It had been found that the sequence of intensity changes was 1024 cm-1 > 1096 cm-1 >1010 cm-1 > 1076 cm-1 > 1083 cm-1 > 1064 cm-1 with the increase of temperature.The study demonstrated the key roles of ATR-FTIR in the analysis of thermal denaturation of the polysiloxanes.

one-dimensional infrared spectroscopysecond derivative infrared spectroscopyfourth derivative infrared spectroscopytwo-dimensional infrared spectroscopypolysiloxanesthermal denaturation

常明、武玉洁、张海燕、程瑶、王佳阳、张宁、于宏伟

展开 >

石家庄学院化工学院，石家庄 050035

河北一品制药有限公司，石家庄 050035

一维红外光谱 二阶导数红外光谱 四阶导数红外光谱 二维红外光谱 硅氧树脂 热变性

河北省科技厅科学技术研究与发展计划石家庄市科学技术研究与发展计划课题石家庄学院校级科研平台资助项目

10215687131500142AXJPT008

2015

10.11896/j.issn.1005-023X.2015.16.015

材料导报
重庆西南信息有限公司

材料导报

CSTPCDCSCD北大核心
影响因子：0.605
ISSN：1005-023X
年,卷(期)：2015.(16)
  • 13
  • 2