Abstract The solubility and diffusion coefficient of supercritical CO2 in polystyrene (PS) dynamic melt were studied by using a new constant pressure experimental device. By comparing the experimental results with those of other researchers, the validity of the experimental device and the reliability of the calculated results are verified. The solubility and diffusion coefficient of supercritical CO2 in polystyrene dynamic melts at different temperatures and pressures were obtained. The numerical calculation method, dissolution process, and experimental results are analyzed and compared with that of the static melt. Finally, the effects of stirring speed, pressure, and temperature fluctuation on the solubility and diffusion coefficient are also analyzed.

中文翻译：

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超临界 CO2 在聚苯乙烯动态熔体中的溶解度和扩散系数

摘要 利用新型恒压实验装置研究了超临界CO2在聚苯乙烯(PS)动态熔体中的溶解度和扩散系数。通过与其他研究人员的实验结果对比，验证了实验装置的有效性和计算结果的可靠性。得到了超临界CO2在不同温度和压力下在聚苯乙烯动态熔体中的溶解度和扩散系数。对数值计算方法、溶解过程和实验结果进行了分析，并与静态熔体进行了比较。最后，还分析了搅拌速度、压力和温度波动对溶解度和扩散系数的影响。