XPS分析过程中X-射线照射对PET的影响  

Effects of X-ray Irradiation on PET during XPS Analysis

作　　者：范燕[1,2] 王海[2] 王梅玲[2] 马一博[1,2] 魏伟胜[1] 邢化朝 

机构地区：[1]中国石油大学(北京)化学工程学院,北京102249 [2]中国计量科学研究院,北京100029

出　　处：《化学试剂》2015年第12期1091-1093,1096,共4页Chemical Reagents

基　　金：国家科技支撑计划项目(2011BAK15B05)

摘　　要：利用X-射线光电子能谱仪的X-射线源照射PET薄膜样品,通过XPS方法原位分析表征了X-射线照射对PET样品的损伤影响。X-射线照射对PET样品的影响显著:随着X-射线照射时间的延长,C1s峰整体向低结合能端发生位移,PET样品中元素C和O的原子百分含量分别呈线性升高和线性下降的趋势,官能团C—O和O=C—O的数量呈线性减小趋势。X-射线照射热效应导致的PET热降解是造成这些变化的主要原因。The damage to surface structure of PET by X-ray irradiation was examined using in-situ X-ray photoelectron spectroscopy（ XPS） analysis. The influences of the X-ray irradiation time on PET samples were significant in these experiments. The C1 s peaks shifted to lower binding energy,and the atomic fractions of C element gradually increased linearly with increase of the X-ray irradiation time,but the O element showed reveres variation. Furthermore,the percentages of C—O and O= C—O functional groups gradually decreased linearly. These changes may be attributed to the thermal degradation of PET samples caused by X-ray irradiation and its thermal effects.

关 键 词：聚对苯二甲酸乙二醇酯(PET) X-射线照射 X-射线光电子能谱(XPS) 降解 

分 类 号：O657.62[理学—分析化学]