• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Journal of Applied Polymer Science >Polymerization of acrylonitrile initiated by cerium (IV)-oxalic acid redox system: A kinetic study
【24h】

Polymerization of acrylonitrile initiated by cerium (IV)-oxalic acid redox system: A kinetic study

机译：铈（IV）-草酸氧化还原体系引发的丙烯腈聚合反应动力学研究

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

The kinetics of aqueous polymerization of Acrylonitrile initiated by the Cerium (IV)-Oxalic acid redox system in Sulfuric acid medium has studied under nitrogen atmosphere in the temperature range of 25-50 degrees C. The rate of polymerization (R-p) and the disappearance of Cerium (IV) have been measured. The water-miscible organic solvents and inorganic salts were depressed both the rate and the conversion. The effects of ionic strength, effects of surfactant have been investigated. The temperature dependence of the rate was studied and the activation parameters were computed using Arrhenius and Eyring plots. A mechanism consistent with the experimental data, involving Ce(IV)-Oxalic acid complexation that generates free radical was suggested. The chain termination step of the polymerization reaction was determined. (c) 2008 Wiley Periodicals, Inc.
机译：在25-50摄氏度的氮气氛下，研究了铈（IV）-草酸氧化还原体系在硫酸介质中引发的丙烯腈的水性聚合动力学。聚合速率（Rp）和消失现象。铈（IV）已被测量。与水混溶的有机溶剂和无机盐均降低了转化率和转化率。研究了离子强度的影响，表面活性剂的影响。研究了速率的温度依赖性，并使用Arrhenius和Eyring曲线计算了活化参数。建议的机制与实验数据一致，涉及生成自由基的Ce（IV）-草酸络合。确定了聚合反应的链终止步骤。 （c）2008年Wiley Periodicals，Inc.

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号