...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Polymer: The International Journal for the Science and Technology of Polymers >Kinetics of interfacial polycondensation reactions – Development of a new method and its validation
【24h】

Kinetics of interfacial polycondensation reactions – Development of a new method and its validation

机译：界面缩聚反应的动力学 - 一种新方法的开发及验证

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

AbstractThe structure and function of the thin polymeric functional layer in reverse osmosis membranes depend on the kinetics of the interfacial polycondensation (IP) reaction by which the film is formed. It has been a challenge to achieve a quantitative understanding of these kinetics because of the high velocity of the reactions and the complex geometry of the support membrane in which the reaction takes place. In this work, we describe a novel and convenient technique for studying such kinetics, and demonstrate the method on the IP reaction betweenmeta-phenylene diamine and trimesoyl chloride. The method involves studying the reaction in a simple geometry of a drop-continuous phase interface in an emulsion, under such conditions that all transport resistances are eliminated. The reaction course is followed through an on-line pH measurement using a fast probe. Interfacial areas available for reaction are measured by an encapsulation technique, under the conditions of reaction. The methods developed have been used to study the kinetics of them-PDA-TMC reaction as a function ofm-PDA concentration and surfactant (tween-85) concentration, and a surface-area based rate function has been shown to fit the data adequately.Graphical abstractDisplay Omitted
机译：<！[CDATA [ 抽象 反渗透膜中薄聚合物功能层的结构和功能取决于界面缩聚的动力学（形成薄膜的IP）反应。由于反应的高速度和反应发生的载体膜的复杂几何形状，对这些动力学的定量理解具有挑战。在这项工作中，我们描述了一种研究这种动力学的新颖，方便的技术，并证明了 Meta - 苯二二胺和三咪酰氯之间的IP反应方法。该方法包括在乳液中的滴落连续相界面的简单几何形状中研究反应，在所有传输电阻被消除的条件下。反应过程遵循使用快速探针的在线pH测量。可用于反应的界面区域通过封装技术在反应条件下测量。已开发的方法用于研究 m -pda-tmc反应的动力学作为 m -pda浓度和表面活性剂的函数（TWEEN-85）浓度，并且已经显示了表面积的速率功能以充分适应数据。 图形抽象 显示省略

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