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首页> 外文期刊>Journal of Applied Polymer Science >Modeling Gel Effect in Branched Polymer Systems: Free-Radical Solution Homopolymerization of Vinyl Acetate
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Modeling Gel Effect in Branched Polymer Systems: Free-Radical Solution Homopolymerization of Vinyl Acetate

机译：在支化聚合物体系中模拟凝胶效应：乙酸乙烯酯的自由基溶液均聚

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摘要

In this work a comprehensive mathematical framework is developed for modeling gel effect in branched polymer systems with application in the solution polymerization of vinyl acetate. This model is based On Sound principles such as the free-volume theory for polymer chains diffusion. The model predictions for monomer conversion and number- and weight-average molecular weights were found to be in good agreement with published data in the literature. Moreover, the joint molecular-weight distribution-long chain branching distribution is calculated by direct numerical integration of a large system of nonlinear ordinary integral-differential equations describing the mass conservation of macromolecular species in a batch reactor. This allows studying the effect of process conditions such as initiator and solvent concentration oil the product quality. It is believed that this work might contribute to a more rational design of polymerization reactors. (C) 2008 Wiley Periodicals, Inc. J Appl Polym Sci 111: 2171-2185, 2009
机译：在这项工作中，开发了一个综合的数学框架，用于模拟支链聚合物体系中的凝胶效应，并将其应用于乙酸乙烯酯的溶液聚合中。该模型基于声音原理，例如用于聚合物链扩散的自由体积理论。发现单体转化率和数均和重均分子量的模型预测与文献中公开的数据非常吻合。此外，通过对描述间歇反应器中大分子物种的质量守恒的非线性普通积分微分方程的大型系统的直接数值积分，来计算联合分子量分布-长链支化分布。这样可以研究工艺条件（例如引发剂和溶剂浓度）对产品质量的影响。认为这项工作可能有助于聚合反应器的更合理设计。 （C）2008 Wiley Periodicals，Inc.J Appl Polym Sci 111：2171-2185，2009

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