| 低密度聚乙烯光引发交联机理Ⅴ.光引发剂二苯甲酮光解产物的NMR研究 |
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| 引用本文： | 徐云华,瞿保钧.低密度聚乙烯光引发交联机理Ⅴ.光引发剂二苯甲酮光解产物的NMR研究[J].波谱学杂志,1996,13(1):19-24. |
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| 作者姓名： | 徐云华 瞿保钧 |
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| 作者单位： | 中国科学技术大学结构分析开放研究实验室, 合肥 230026 |
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| 摘 要： | 用NMR技术对光引发剂二苯甲酮(BP)引发低密度聚乙烯模型化合物正二十四烷、正十二烷、鲨烷(异三十烷)、异辛烷和乙烯-1紫外光交联过程中的光解产物进行了检测和研究.井首次确定了BP在光引发交联体系中光解的主要产物为苯并哪醇(1,1,2,2-四苯基-1,2-乙二醇),为BP光引发聚乙烯交联的机理提供了直接的实验证据.
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| 关 键 词： | 核磁共振 低密度聚乙烯 光交联 光降解 |
| 收稿时间： | 1995-02-25 |
MECHANISM OF PHOTOINITIATED CROSSLINKING OF LOW DENSITY POLYETHYLENE V. NMR Studies on Photolysis Products of Benzophenone |
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| Xu Yunhua, On Baojun,Lu Fei and Zhang Yuheng.MECHANISM OF PHOTOINITIATED CROSSLINKING OF LOW DENSITY POLYETHYLENE V. NMR Studies on Photolysis Products of Benzophenone[J].Chinese Journal of Magnetic Resonance,1996,13(1):19-24. |
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| Authors: | Xu Yunhua On Baojun Lu Fei and Zhang Yuheng |
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| Institution: | Structure Research Laboratory, University of Science and Technology of China, Hefei 230026 |
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| Abstract: | Taking n-C24H50, n-C12H26, squalane, isooctane and 1-hexene as model compounds of low density polyethylene (LDPE), we have detected and identified photolysis productS of bensophenone (BP) during the photoinitiated crosslinking of these model compounds for the first time by NMR spectroscopic method. The results show that main product of BP photoreduction is benzopinacol, which provides new experimental evidence for elucidating the mechanism of the photoinitiated crosslinking of LDPE. |
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| Keywords: | NMR Low density polyethylene Photocrosslinking Photolysis |
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