| 聚乙酸乙烯酯和部分水解聚丙烯酰胺在超声波辐照下降解与嵌段共聚的研究 |
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| 引用本文： | 曹志强,徐僖. 聚乙酸乙烯酯和部分水解聚丙烯酰胺在超声波辐照下降解与嵌段共聚的研究[J]. 化工学报, 1985, 36(1): 56-64 |
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| 作者姓名： | 曹志强 徐僖 |
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| 作者单位： | 成都科技大学高分子研究所,成都科技大学高分子研究所 |
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| 摘 要： | 本文分别研究了在超声波辐照作用下聚乙酸乙烯酯(PVAc)和部分水解聚丙烯酰胺(HPAM)在乙醇/水(55/45)中的降解和两者的嵌段共聚反应.结果表明:PVAc的降解速率大致可以用Ovenall方程表示,而HPAM的偏离较大.在25℃、频率为18.2kHz、逆变器主回路输入电流为2.4A的超声强度下,将浓度为0.50%的PVAc/HPAM(1/1)乙醇/水(55/45)溶液辐照10分钟,所得共聚物产率为4.3%.通过溶解试验、电子显微镜、相差显微镜、元素分析、IR和NMR分析了共聚物的结构,证明该共聚物主要为嵌段体.
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Ultrasonic Degradation and Copolymerizationof Polyvinyl Acetate with PartiallyHydrolyzed Polyacrylamide |
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| Cao Zhiqiang and Xu Xi. Ultrasonic Degradation and Copolymerizationof Polyvinyl Acetate with PartiallyHydrolyzed Polyacrylamide[J]. Journal of Chemical Industry and Engineering(China), 1985, 36(1): 56-64 |
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| Authors: | Cao Zhiqiang and Xu Xi |
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| Affiliation: | Cao Zhiqiang and Xu Xi(Polymer Research Institute,Chengdu University of Science and Technology) |
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| Abstract: | The ultrasonic degradation and copolymerization of polyvinyl acetate (PVAc) with partially hydrolyzed polyacrylamide (HPAM) in ethanol/water (55/45) have been studied. The experimental results showed that the rate of degradation of PVAc follows Ovenalls equation approximately and that of HPAM deviates from the equation. The effects of the ultrasonic intensity and reaction temperature on the rates of degradation are the same. By irradiating 0.50% PVAc/HPAM (1/1 by weight) at 25℃ by ultrasound of 18.2 kHz with 2.4 A imput current on reversed main circuit for a period of 10 min, the yield of copolymer amounted to 4.3%. Its structure was identified by means of solubility test, IR, NMR, element analysis, electron microscope and phase contrast microscope, and the copolymer was proved to be mainly a block one. |
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