| 乳液聚合法制备聚乙烯醇的工艺研究 |
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| 引用本文： | 孙义明,周建刚,彭少贤.乳液聚合法制备聚乙烯醇的工艺研究[J].合成技术及应用,2003,18(3):8-10. |
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| 作者姓名： | 孙义明 周建刚 彭少贤 |
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| 作者单位： | 湖北工学院化学工程系,湖北,武汉,430068 |
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| 摘 要： | 用热分解型引发剂在较低的乳化剂浓度下进行了醋酸乙烯(VAc)的乳液聚合,并将所得聚合物(PVAc)干法醇解。讨论了聚合反应中反应温度、引发剂用量、反应时间对转化率、粘度、最终产物分子质量(M_η)的影响,同时讨论了干法醇解反应中聚合物的甲醇浓度、碱摩尔比、温度与最终醇解率的关系。
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| 关 键 词： | 聚乙烯醇 高分子质量 乳液聚合 醇解 |
| 文章编号： | 1006-334X(2003)03-0008-03 |
Study on technics of polyvinyl alcohol preparation by emulsion |
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| SUN Yi-ming,ZHOU Jian-gang,PENG Shao-xian.Study on technics of polyvinyl alcohol preparation by emulsion[J].Synthetic Technology and Application,2003,18(3):8-10. |
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| Authors: | SUN Yi-ming ZHOU Jian-gang PENG Shao-xian |
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| Abstract: | Emulsion of vinyl acetate was conducted with latex of low concentration and initiator of pyrolytic reaction, the product was processed by dry alcoholysis reaction. Influences of initiator s dosage ., reaction temperature and time on conversion, viscosity, molecular weight was discussed. Concentration of the polymer, alkaline mol ratio, temperature on the final alcoholysis rate were also discussed. |
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| Keywords: | polyvinyl alcohol high relative molecular weight emulsion alcoholysis |
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