| 聚乙烯醇(PVA)在氢醌(H_2Q)存在下的氧化降解 |
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| 引用本文： | 张晓凯. 聚乙烯醇(PVA)在氢醌(H_2Q)存在下的氧化降解[J]. 电子显微学报, 1992, 0(3) |
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| 作者姓名： | 张晓凯 |
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| 作者单位： | 山东师范大学分析测试中心 济南 |
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| 摘 要： | 本文应用电子显微镜研究了PVA在H_2Q存在下的氧化降解机理,并对PVA降解前后的微观结构变化进行了观察。结果表明:高聚物PVA在有光敏剂(H_2Q)存在下,能引发PVA产生降解,其降解机理是按自由基连锁反应过程进行的,降解后的低聚合度PVA的微结构形态也与降解前不同。
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| 关 键 词： | 聚乙烯醇(PVA) 氢醌(H_2Q) 光敏剂 自由基连锁反应机理 |
Oxidative Degradation of Hydroquincne(H_2Q)Exist in Polyvinyl Alcohol(PVA) |
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| Zhang Xiaokai. Oxidative Degradation of Hydroquincne(H_2Q)Exist in Polyvinyl Alcohol(PVA)[J]. Journal of Chinese Electron Microscopy Society, 1992, 0(3) |
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| Authors: | Zhang Xiaokai |
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| Abstract: | Oxidative degradation mechanism of hydroquincne(H2Q)exist in polyvinyl alcohol(PVA) were studied with electron microscope in this paper. Microstructure chang of high degree of polymerization PVA and after degradation were observed. The results indicate:It can be initiate PVA degradation when photosensitizer (H_2Q)exist in high polymers PVA. Degradation mechanism is according to free radical chain reaction process. Microstructure morphology of low degree of polymerization PVA degradation before and after is not the same. |
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| Keywords: | Polyvinyl Alcohol(PVA) Hydroquincne(H_2Q):Photosensitizer:Free radical chain reaction mechanism |
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