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首页> 外文会议>First Sino-Japanese Conference on Polymerization Reaction Engineering and Mixing Technology >Supercritical Carbon Dioxide Assisted Solid-State Grafting of Methyl Methacrylate onto Polypropylene
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Supercritical Carbon Dioxide Assisted Solid-State Grafting of Methyl Methacrylate onto Polypropylene

机译：超临界二氧化碳辅助的甲基丙烯酸甲酯固相接枝到聚丙烯上

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摘要

The work reported in this paper aimed at exploring the advantages of using supercritical carbon dioxide (scCO_2) as an environmentally benign solvent and swelling agent for carrying out the grafting process of methyl methacrylate (MMA) onto polypropylene in the solid state. The effects of various factors on the grafted content and on changes in the molecular-scale and microscale structures of the resulting iPP were then investigated. Those factors included the reaction operation mode, reaction temperature, reaction time, monomer and initiator concentrations, pressure. Results showed that the scCO_2-assisted solid-state grafting process of methyl methacrylate onto iPP did have some scientifically interesting and industrially relevant advantages over the classical solid-state or melt process. Among them, it was worth pointing out that the CO_2 pressure itself constituted an additional and sensitive process parameter capable of significantly modifying the overall reaction pathway and the product quality. For example, the CO_2 pressure could also regulate the grafted content with ease. With CO_2; assisted, through changing reaction operation mode, diffusion and side reaction could bei overcome and grafted PP uniform in grafted content had been produced.
机译：本文报道的工作旨在探索使用超临界二氧化碳（scCO_2）作为对环境有益的溶剂和溶胀剂来进行固态丙烯酸甲酯（MMA）接枝到聚丙烯上的优势。然后研究了各种因素对所得iPP的接枝含量以及分子尺度和微观尺度结构变化的影响。这些因素包括反应操作模式，反应温度，反应时间，单体和引发剂浓度，压力。结果表明，与经典的固态或熔融工艺相比，scCO_2辅助的甲基丙烯酸甲酯固态接枝工艺在iPP上确实具有一些科学上有趣的和工业上相关的优势。其中，值得指出的是，CO_2压力本身构成了一个额外的敏感工艺参数，能够显着改变整个反应路径和产品质量。例如，CO 2压力也可以轻松调节接枝含量。用CO_2;通过改变反应操作方式，可以克服扩散和副反应，制得接枝含量均匀的接枝PP。

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