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Emulsion polymerization of isoprene: Mathematical model for long-chain branching

机译:异戊二烯的乳液聚合:长链支化的数学模型

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摘要

For a batch emulsion polymerization of isoprene at 10°C in the presence of a chain transfer agent, a previous mathematical model (Minari et al., J. Appl. Polym. Sci. 2010, 116, 590) was extended for predicting the molecular weight distributions of all the generated long chain branched topologies; with each topology characterized by the number of tri- and tetra-functional branches per molecule. According to the new model predictions, at the reaction end the linear topology remains as the most abundant (with ~ 40% of the total mass), followed by the single trifunctionally branched topology (with ~ 20% of the total mass). The model can be used for developing strategies for controlling the distribution of branches/molecule, for estimating melt viscosities, etc.
机译:对于在链转移剂存在下在10℃下异戊二烯的间歇乳液聚合,扩展了先前的数学模型(Minari等人,J.Appl.Polym.Sci.2010,116,590)以预测分子。所有生成的长链分支拓扑的权重分布;每个拓扑的特征是每个分子的三官能和四官能分支数。根据新模型的预测,在反应末端,线性拓扑保持最丰富(占总质量的40%),其次是单个三功能分支拓扑(占总质量的20%)。该模型可用于开发策略,以控制支链/分子的分布,估算熔体粘度等。

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