Modeling and Simulation of an Emulsion Copolymerization Process
Modeling and Simulation of an Emulsion Copolymerization Process
复制标题
乳液共聚过程的建模与仿真
DOI：
10.3303/cet1332127
复制
发表时间：
2013
影响因子：
--
通讯作者：
V. Torretta
中科院分区：
文献类型：
--
作者：
S. Copelli;M. Dente;M. Derudi;G. Bozzano;V. Torretta
自由基乳液共聚是应用最广泛的工艺之一，旨在生产由于粘度低而易于使用的涂料。在工业规模上，此类过程需要对所有操作变量进行高水平的控制。特别地，乳液聚合过程在窄范围内的可重复性是最理想的特征之一，因为它还允许控制其他重要的产品质量，如最终固体含量、平均粒度、胶乳粘度和聚合物平均分子量。整个工厂的其他重要要求是尽量减少反应物的投料时间以及制备尽可能高浓度的乳胶。在这项工作中，考虑了复杂工业共聚过程的第一步。由于涉及不同的单体类型（丙烯酸丁酯、苯乙烯、丙烯酸和丙烯酰胺），因此有必要为自由基乳液反应链的所有传统步骤（即引发、增长、自由基终止、背咬和长链支化、胶束晶种等）提出一套完整的速率常数。然后将这些参数插入到系统中
Radical emulsion copolymerization is one of the most widely diffused processes aimed to produce paints easy to use because of their low viscosity. At industrial scale, such processes require a high control level of all the operating variables. Particularly, the repeatability of an emulsion polymerization process within narrow limits is one of the most desirable features because it allows for controlling also other important product qualities as final solids content, average particle size, latex viscosity and polymer average molecular weight. Other important full plant requirements are the minimization of reactants dosing times and the preparation of a latex at the highest possible concentration. In this work, the first step of a complex industrial copolymerization process has been considered. Since different monomer types (butyl acrylate, styrene, acrylic acid and acrylamide) are involved, it has been necessary to propose a complete set of rate constants for all the traditional steps of the radical emulsion reactions chain (i.e. initiation, propagation, radicals termination, backbiting and long-chain branching, micelles seeding, etc..). These parameters have then been inserted into a system of