Quantification of Polymer Fouling on Heat Transfer Surfaces During Synthesis,Macromolecular Reaction Engineering

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Quantification of Polymer Fouling on Heat Transfer Surfaces During Synthesis
Macromolecular Reaction Engineering ( IF 1.8 ) Pub Date : 2019-10-25 , DOI: 10.1002/mren.201900035
Annika Hohlen ₁ , Wolfgang Augustin ₁ , Stephan Scholl ₁

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During the synthesis and processing of polymers, a significant amount of polymer may be deposited on the heat transfer surfaces. This deposit is unwanted and is usually named fouling. This study deals with the fouling behavior of a vinyl acetate/vinyl ester copolymer during emulsion polymerization and compares this to fouling of an already reacted vinyl acetate/ethylene copolymer dispersion. Besides the state of polymerization, also the influence of the wall temperature is investigated. The experiments are performed on cooled and heated surfaces. The deposition process is quantified by the mass‐based fouling resistance, the height of the fouling layer, and the surface coverage using a digital microscope. It is found that the state of polymerization and the temperature gradient between wall and bulk exert a strong influence on the fouling behavior, especially on the structure of the fouling layer.

中文翻译：

合成过程中传热表面聚合物结垢的定量

在聚合物的合成和加工过程中，大量的聚合物可能沉积在传热表面上。这种沉积物是多余的，通常称为结垢。该研究处理了乳液聚合过程中乙酸乙烯酯/乙烯基酯共聚物的结垢行为，并将其与已经反应的乙酸乙烯酯/乙烯共聚物分散体的结垢进行了比较。除了聚合状态外，还研究了壁温的影响。实验在冷却和加热的表面上进行。沉积过程通过基于质量的结垢阻力，结垢层的高度以及使用数字显微镜的表面覆盖率进行量化。发现聚合状态和壁与本体之间的温度梯度对结垢行为有很大影响，

更新日期：2019-10-25

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