超临界CO_2流体中活性分散染料SCF-AOL1的溶解性

Solubility of disperse reactive dye SCF-AOL1 in supercritical carbon dioxide

采用团队前期研发的在线检测系统,对超临界CO_2流体中活性分散染料SCF-AOL1的溶解特性进行在线研究,并探讨系统温度、压力和溶解时间对活性分散染料溶解性的影响。研究结果表明,在试验条件下,升高系统温度、压力,适当延长溶解时间,能显著提高该活性分散染料在超临界CO_2流体中的溶解性。特别是当系统温度超过100℃时,该染料在流体中的溶解性显著增大;当系统压力从临界点压力升高到15 MPa时,流体中染料的溶解性增大明显,再继续升高系统压力,该染料的溶解性增大相对平缓。在试验系统条件下,当溶解时间达到120.0 min时,该染料溶解可达到或趋于平衡状态。

The solubility of disperse reactive dye SCF-AOL1 in supercritical carbon dioxide fluid is investigated by on-line monitoring method with an self-made online examination system. Moreover, the effects of system temperature, pressure and dissolving duration on the solubility of the employed dye are explored. The results show that the solubility of the disperse reactive dye SCF-AOLI in supercritical carbon dioxide fluid in creases with the in crease of the system temperature, pressure and dissolving duration under the experimental conditions. Particularly, the dye solubility is significantly improved as the system temperature exceeds 100℃, as well as for the system pressure increases from critical point to 15 MPa except for its further in crease which resulted in a relatively slow en hanceme nt in dye solubility. Additi on ally, a dissolving equilibrium could be achieved as a dissolving duration at 120.0 min in the employed system and experimental conditions.