摘要
采用变温傅里叶变换衰减全反射红外光谱(ATR-FTIR)技术,分别研究了聚氯乙烯C-Cl伸缩振动模式(νC-Cl)的红外一维光谱、红外二阶导数光谱、红外四阶导数光谱、红外去卷积光谱和二维相关红外光谱。研究发现:在700~600cm^(-1)的频率范围内,聚氯乙烯νC-Cl分别在604、615、637和695cm^(-1)频率处有红外吸收峰。玻璃化转变温度前,随着测定温度的升高,聚氯乙烯νC-Cl红外吸收强度的变化快慢顺序为:604cm^(-1)>695cm^(-1)>615cm^(-1)>637cm^(-1)。玻璃化转变温度后,而随着测定温度的升高,聚氯乙烯νC-Cl红外吸收强度的变化快慢顺序为:695cm^(-1)>604cm^(-1)>615cm^(-1)>637cm^(-1)。
The polyvinyl chloride molecularstructure had been studied by one-dimensional ATR infrared spectroscopy, second derivative ATR infrared spectroscopy, fourth derivative ATR infrared spectroscopy, deconvolution ATR infrared spectroscopy and two-dimensional infrared spectroscopy with attenuated total reflection Fourier transforminfrared spectroscopy （ATR-FTIR）. Before glass transition temperature and between the frequency band700-600cm^-1）, the band resulting from the C-CI stretching vibration （vc-Cl） appeared near 604, 615, 637and 695cm^-1 and the sequence of intensity changes was 604cm^-1〉695cm^-1〉 615cm^-1 〉637cm^-1with the increase of temperature. After glass transition temperature, the sequence of intensity changes was 695cm^-1〉 604cm^-1 〉 615cm^-1 〉 637cm^-1 with the increase of temperature.
出处
《红外技术》
CSCD
北大核心
2016年第6期529-535,共7页
Infrared Technology
基金
河北省科技厅科学技术研究与发展计划(12222802)
石家庄市科学技术研究与发展计划课题(151500182A)
关键词
红外一维光谱
红外二阶导数光谱
红外四阶导数光谱
红外去卷积光谱
二维相关红外光谱
聚氯乙烯
玻璃化转变温度
one-dimensional ATR infrared spectroscopy, second derivative ATR infrared spectroscopy, fourth derivative ATR infrared spectroscopy, deconvolution ATR infrared spectroscopy, two-dimensional infrared spectroscopy, polyvinyl chloride, glass transition temperature
