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首页> 外文会议>European symposium of the working party on computer aided process engineering >Semi-Batch Emulsion Copolymerization: A General Model for a Copolymer Formed from n Monomer Units
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Semi-Batch Emulsion Copolymerization: A General Model for a Copolymer Formed from n Monomer Units

机译：半批料乳液共聚：由N单体单元形成的共聚物的一般模型

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摘要

A detailed, general monodisperse mathematical model for seeded semi-continuous emulsion copolymerisation (SCEP) with n comonomers is presented. The presented model describes the SCEP process in detail using radical, monomer and particle balances in water and particle phase and employing a phase equilibrium as the connection. This approach, though in parts known from other modelling approaches, is new in incorporating the latest research on dynamic radical balances, particle nucleation, the gel effect and the avarage number of radicals per particle. It is, however, limited to conditions without a droplet phase. Every conceivable SCEP process can thus be described once the physical data has been provided and the model can easily be extended by a batch-reactor heat balance. Results have been calculated for the pairs and triples (Vinyl Acetate-Butyl Acrylate), (Vinyl Acetate-Butyl Acrylate-Methyl Methacrylate), (Butyl Acrylate-Methyl Methacrylate), (Methyl Methacrylate-Styrene). The model works also for the homopolymerisation for Methyl Methacrylate, Styrene and Vinyl Acetate. The results for Vinyl Acetate and Butyl Acrylate show reasonable agreement with published experimental data.
机译：提出了一种具有N共聚单体的种子半连续乳液共聚（SCEP）的详细的一般单分散数学模型。本模型使用水和粒子相中的自由基，单体和颗粒平衡详细描述了SCEP方法，并采用相位平衡作为连接。这种方法虽然在其他建模方法中已知的部分是新的，但在整个关于动态自由基余额，颗粒成核，凝胶效应和每种颗粒的自由基的贪婪数量的最新研究中是新的。然而，它限于没有液滴阶段的条件。一旦提供了物理数据并且可以通过批量反应器热平衡容易地延伸，因此可以描述每个想到的SCEP过程。已经计算了对和三级（乙酸丙烯酸丁酯），（乙酸乙烯酯 - 丙烯酸甲酯 - 甲基丙烯酸甲酯），（丙烯酸丙烯酸甲酯 - 甲基丙烯酸甲酯），（甲基丙烯酸甲酯 - 苯乙烯）。该模型还适用于甲基丙烯酸甲酯，苯乙烯和乙酸乙烯酯的均聚。乙酸乙烯酯和丙烯酸丁酯的结果显示出合理的协议与公布的实验数据。

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