| 低密度聚乙烯光引发交联机理 |
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| 引用本文： | 瞿保钧,徐云华,瞿欣.低密度聚乙烯光引发交联机理[J].波谱学杂志,1995(6). |
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| 作者姓名： | 瞿保钧 徐云华 瞿欣 |
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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 |
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| 基金项目： | 国家自然科学基金,国家教委留学回国人员资助 |
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| 摘 要： | 首次用溶液高分辨￣（１３）ＣＮＭＲ研究了由二苯甲酮光引发低密度聚乙烯（ＬＤＰＥ）交联所产生的交联结构，现已观测和鉴定了Ｈ型和Ｙ型长链支化两类交联点。对于熔融态紫外光交联５－１０ｓ的ＬＤＰＥ样品，其Ｈ型和Ｙ型交联点的浓度据估测分别为一万个碳原子中有５．７－１６．９和７．６－２１．６个结构单元。
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| 关 键 词： | 低密度聚乙烯，光交联机理，交联结构，￣（13）CNMR |
MZCHANISM OF PHOTOINITIATED CROSSLINKING OF LOW DENSITY POLYETHYLENEIV. ~(13)C NMR Study of H-and Y-type Crosslinks |
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| Qu Baojun, Xu Yunhua and Qu Xin.MZCHANISM OF PHOTOINITIATED CROSSLINKING OF LOW DENSITY POLYETHYLENEIV. ~(13)C NMR Study of H-and Y-type Crosslinks[J].Chinese Journal of Magnetic Resonance,1995(6). |
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| Authors: | Qu Baojun Xu Yunhua and Qu Xin |
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| Abstract: | tructures of crosslinks produeed in benzophenone-photoinitiated crosslinking oflow density polycthylene (LDPE) have been studied for the firet time by solution-state~(13)C NMR spedroscopy. The H-links and Y-type long branches havc been observedand identified. The concentrations of H- and Y-type crosslinks are estimated to be5.7- 16-9 and 7.6-21.6 structure units pcr 10000 carbon atonis with the LDPE sam-ples UV-irradiated for 5- 10 seconds in the melt, respectively. |
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