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首页> 外文期刊>Journal of Applied Polymer Science >Temperature distribution effects during polymerization of methacrylate-based monoliths
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Temperature distribution effects during polymerization of methacrylate-based monoliths

机译：甲基丙烯酸酯基整料聚合过程中的温度分布效应

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Monolithic stationary phases are becoming increasingly important in the field of liquid chromatography. Methacrylate-based monoliths are produced via free-radical bulk polymerization. The preparation of large-volume monoliths is a major problem because the intensive heat released during polymerization causes distortion of the porous monolithic structure. This work presents experimental measurements of temperature distributions during polymerization in moulds of different sizes and at various experimental conditions. A mathematical model for the prediction of temporal and spatial temperature distribution during the polymerization of methacrylate-based monolithic columns is introduced. The polymerization is described by an unsteady-state heat conduction equation with the generation of heat related to the general kinetics of polymerization. Predictions from the mathematical model are in good agreement with the experimental measurements at different experimental conditions. A method for construction of large-volume monolithic columns is presented and an attempt is made to adopt the developed mathematical model in annular geometry. (C) 2003 Wiley Periodicals, Inc. J AppI Polym Sci 87: 2326-2334,2003. [References: 20]
机译：在液相色谱领域中，整体式固定相变得越来越重要。甲基丙烯酸酯基整料是通过自由基本体聚合生产的。大体积整料的制备是一个主要问题，因为在聚合过程中释放的大量热量导致多孔整料结构的变形。这项工作提出了在不同尺寸和各种实验条件下的模具中聚合过程中温度分布的实验测量。介绍了用于预测甲基丙烯酸酯整体柱聚合过程中时空分布的数学模型。聚合反应是通过非稳态热传导方程来描述的，其中产生的热量与聚合反应的一般动力学有关。数学模型的预测与不同实验条件下的实验测量结果非常吻合。提出了一种构造大体积整体柱的方法，并尝试将开发的数学模型应用于环形几何。 （C）2003 Wiley Periodicals，Inc.J AppI Polym Sci 87：2326-2334，2003。 [参考：20]

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