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13C—NMR高密度聚乙烯定量分析中峰强度的采集及处理方法
Collection and Calculation of 13C-NMR Spectra in High Density Polyethylene
【Author】 Zhang Yubing Chen Dianbao Yu Yongliang Yong Lianqi
【机构】 青岛化工学院；
【摘要】 <正>高密度聚乙烯（HDPE）的主链碳占95%以上,故13C-NMR通常在超导核磁谱仪上进行测量。本文介绍了用AC-80 NMR谱仪上进行测量的结果。并对峰采集和强度处理进行了探讨。
【Abstract】 The chain structure and existence of various branch of high density polyethylene were determined by 13C-NMR.The observed peaks of all kinds of branches have been compared with 13C chemical shifts which calculated by Lindeman -Adams additivity rule.The intensity of peaks（peak height） were determined directly by compter.As the ratio of sound to noise is rather poor,the intensity of peaks has to be rectified.The concentration of all branches have been found quantitatively by a least-square and observing average methods,and comparison of this two methods were made.The latter also has rather precision rusults for the number of carbon atoms of branches being greater than one per ten thousand carbon atoms.
- 【会议录名称】 第七届全国波谱学学术会议论文摘要集
- 【会议名称】第七届全国波谱学学术会议
- 【会议时间】1992-10
- 【会议地点】中国河南郑州
- 【分类号】O632.12
- 【主办单位】中国物理学会波谱学专业委员会