光盘表面材料三级红外光谱研究  

Research on Three-step IR Spectrum of Compact Disc Surface Material

作　　者：于宏伟[1] 赵茉含 高佳丽 殷俊荣 辛畅 刘海月 王鹏程 苑路鑫 YU Hong-wei;ZHAO Mo-han;GAO Jia-li;YIN Jun-rong;XIN Chang;LIU Hai-yue;WANG Peng-cheng;YUAN Lu-xin(School of Chemical Engineering,Shijiazhuang University,Shijiazhuang,Hebei 050035,China)

机构地区：[1]石家庄学院化工学院

出　　处：《石家庄学院学报》2019年第3期5-12,共8页Journal of Shijiazhuang University

基　　金：石家庄市藁城区科学技术研究与发展计划课题(G201804)

摘　　要：采用红外光谱(IR)研究光盘表面材料分子结构.实验发现:光盘表面材料红外吸收模式包括:CH3不对称伸缩振动(νasCH3),CH3对称伸缩振动(νsCH3),C=O伸缩振动(νC=O),C—O伸缩振动(νC—O),CH3弯曲振动(δCH3),对位取代苯环伸缩振动(νp-benzene)等,光盘表面材料的主要成分是聚碳酸酯.采用变温红外技术(TD-IR)进一步研究温度变化对光盘表面材料热稳定性的影响.研究发现:光盘表面材料中νp-benzene-2对应的官能团对于温度变化比较敏感.采用二维光谱技术(2D-IR),进一步研究了光盘表面材料νp-benzene-2.实验发现:δp-benzene-2对应的的吸收频率包括1506cm^-1(δp-benzene-2-A)和1493cm^-1(δp-benzene-2-B).随着测定温度的升高,光盘表面材料δp-benzene-2对应的吸收峰变化顺序为1506cm^-1(δp-benzene-2-A)早于1493cm^-1(δp-benzene-2-B).The molecular structure of the surface material of compact disc has been studied by infrared spectroscopy (IR).There are CH3 asymmetrical stretching vibration (νasCH3),CH3 symmetrical stretching vibration (νsCH3),C=O stretching vibration (νC=O),C-O stretching vibration (νC-O),CH3 bendingvibration (δCH3) and p-benzene stretching vibration(νp-benzene).The main component of the surface material is polycarbonate.The thermal stability of the compact disc surface material molecular structure has been further studied by temperature-dependent infrared spectroscopy (TD-IR).The study finds that νp-benzene-2 corresponding functional group is more sensitive to temperature changes.The two dimensional infrared spectroscopy(2D-IR) of compact disc surface material νp-benzene-2 is researched also.The infrared absorption frequencies of νp-benzene-2 includes 1 506 cm^-1 (δp-benzene-2-A)和1 493 cm^-1 (δp-benzene-2-B),and the sequence of peak changes is 1 506 cm^-1 (δp-benzene-2-A)>1 493 cm^-1 (δp-benzene-2-B) with the increase of temperature.

关 键 词：光盘 表面材料 红外光谱 变温红外光谱 二维红外光谱 热稳定性 

分 类 号：O657.3[理学—分析化学]