| 含氢甲基硅油含氢量的质谱法测定 |
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| 引用本文： | 郭志峰. 含氢甲基硅油含氢量的质谱法测定[J]. 分析化学, 1997, 25(3): 311-313 |
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| 作者姓名： | 郭志峰 |
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| 作者单位： | 河北大学理化中心!保定071002 |
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| 摘 要： | 含氢甲基硅油是高分子量的多聚物，用质谱方法对其Ｓｉ－Ｈ键上的氢含量的测定，仅用测定其分子量的办法不易实现。实验中发现，用其两个碎片离子ＳｉＯ９ＣＨ３）２和ＳｉＯ－ＨＣＨ＾＋３作为代表性离子，以它们的丰度比定出甲基含氢硅油的含氢量「Ｈ」。结果与用化学方法所测值十分接近。
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| 关 键 词： | 质谱 聚二甲基 甲基氢化硅氧烷 有机硅聚合物 |
Mass Spectrometric Determination of Active Hydrogen in Polydimethylhydrosiloxances |
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| Cuo Zhifeng. Mass Spectrometric Determination of Active Hydrogen in Polydimethylhydrosiloxances[J]. Chinese Journal of Analytical Chemistry, 1997, 25(3): 311-313 |
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| Authors: | Cuo Zhifeng |
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| Abstract: | Si-H bond in polydimethylhydrosiloxanes plays an important role in organic silicon industry. It is not easy to determnine the amount of Si-H bond in ploydimethlhydrosilioxanes using the molecular ions in mass spectrometry. We found that the amount of Si-H can be de- fined by the characteristic ions of SiO[CH3]2 and SiOHCH3.By comparing the intensities of m/z 59(y) and m/z 74(x) peaks in mass spectrum, the active hydrogen content can be deter- mined. Results obtained by this method can match the current chemical method. |
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| Keywords: | Si-H bond polydimethylhydrosiloxane mass spectrometry |
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