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首页> 外文期刊>Journal of Applied Polymer Science >Impact of Impeller Type on Methyl Methacrylate Emulsion Polymerization in a Batch Reactor
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Impact of Impeller Type on Methyl Methacrylate Emulsion Polymerization in a Batch Reactor

机译：叶轮类型对间歇式反应器中甲基丙烯酸甲酯乳液聚合的影响

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The emulsion polymerization of methyl methacrylate (MMA) was carried out in a lab-scale reactor, which was equipped with a top-entry agitator, four wall baffles, a U-shaped cooling coil, and a temperature controller. Potassium per sulfate and sodium dodecyl sulfate as were used as the initiator and the surfactant, respectively. The experimental investigation demonstrated the impact of the impeller type (45° six pitched-blade turbine and Rushton impeller), number of impellers (single and double impellers), and impeller speed (100–350 rpm) on the monomer conversion, polymer particles size, molecular weight, and glass transition temperature. The results revealed that the effect of the impeller speed on the characteristics of the polymer attained using the pitched-blade turbine was more prominent than that for the Rushton turbine. It was also found that the impact of the impeller speed on the polymer characteristics was much more pronounced for the double pitched-blade turbines rather than for the double Rushton turbines. However, more uniform size distribution was achieved with the Rushton turbine.
机译：甲基丙烯酸甲酯（MMA）的乳液聚合是在实验室规模的反应器中进行的，该反应器配有顶入式搅拌器，四个壁挡板，U型冷却盘管和温度控制器。过硫酸钾和十二烷基硫酸钠分别用作引发剂和表面活性剂。实验研究表明，叶轮类型（45°六桨距涡轮和Rushton叶轮），叶轮数量（单叶轮和双叶轮）以及叶轮速度（100-350 rpm）对单体转化率，聚合物颗粒尺寸的影响，分子量和玻璃化转变温度。结果表明，叶轮转速对使用桨叶式涡轮机获得的聚合物特性的影响比Rushton涡轮机更为突出。还发现，对于双节距叶片式涡轮机，而不是对于双Rushton涡轮机，叶轮速度对聚合物特性的影响要明显得多。但是，使用Rushton涡轮机可获得更均匀的尺寸分布。

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