Abstract

This paper discusses the results of theoretical and experimental studies on the implementation of frontal polymerization in continuous-flow reactors of various geometric designs. The stationarity and stability of propagation of the front wave are shown to depend on macrokinetic and kinetic parameters. The effects of the feed rate, reactor dimensions, and concentration of the mixtures of initiators and polymer additives on the conversion rate and molecular-weight characteristics of the formed polymer are studied. The causes of frontal stationarity disturbance, which are manifested by the formation of nonlinear phenomena in the form of various oscillation modes, are revealed.Brief characteristics of tubular reactors, as found theoretically and experimentally, and their shortcomings are presented. A cylindrical reactor for the frontal polymerization of methyl methacrylate is presented, which was developed at the Experimental Plant in Chernogolovka (Moscow oblast) and introduced into industrial production in Dzerzhinsk. A tubular reactor that was built in to a flow for the synthesis of hydrogels under the conditions of frontal polymerization is also presented.

中文翻译：

---

连续流反应器中的前沿聚合

摘要

本文讨论了在各种几何设计的连续流反应器中实施正面聚合的理论和实验研究结果。显示前波的平稳性和稳定性取决于宏观动力学和动力学参数。研究了进料速率，反应器尺寸以及引发剂和聚合物添加剂的混合物的浓度对所形成的聚合物的转化率和分子量特性的影响。揭示了以各种振荡模式形式出现的非线性现象所表现出的正面平稳扰动的原因。管状反应堆的简要特征，从理论和实验上提出了其缺点。提出了一种用于甲基丙烯酸甲酯的正面聚合反应的圆柱形反应器，该反应器是在Chernogolovka（莫斯科州）的实验工厂开发的，并已在捷尔任斯克生产。还提出了在正面聚合条件下内置于流中用于合成水凝胶的管式反应器。