Measurement and correlation of physical properties in supercritical CO2 dyeing process

在温度为353 ~ 383 K、压力为10 ~ 15 MPa的条件下，测定了含OH、NH_2和CH_3基团的蒽醌染料在超临界CO_2中的溶解度。实验结果与作为温度和压力的函数的状态方程精确关联。此外，IGC装置是新开发的聚合物玻璃化转变温度的测量。根据聚合物的平均分子量成功地关联了聚丙烯酸的玻璃化转变温度的压力下降。

Solubilities of dyestuffs like as anthraquinone with OH, NH2, and CH3 groups in supercritical CO2 were measured at the temperature from 353 to 383 K and the pressure ranges of 10 to 15 MPa. The experimental results were correlated accurately by an equation of state as a function of temperature and pressure. Moreover the IGC apparatus was newly developed for the measurements of the polymer glass transition temperature. The pressure depression of glass transition temperature of polyacrylic acids were correlated successfully in terms of average molecular weight of the polymer.