【聚合物系超临界流体脱挥的研究】.pdf
浙江大学博士学位论文 摘要 本文首先对超临界流体萃取(SFE)技术发展的历史和现状作了综述,指出挥份-聚 合物/超临界流体这类多元体系相行为及其传递行为的复杂性和研究的困难及不足.在分析了各种溶解度的测定方法后,认为流动法是一种较为切实可行的溶解度测定方 法。本文也阐述了建立该类多元体系溶解度数学模型的方法.分析了当前关联、预测 超临界体系二元扩散系数的两种常用方法,即硬球理论方法与流体力学理论方法。并 对超临界流体(SCF)技术在聚合物脱挥、纯化方面的应用作了两则例解。
浙江大学博士学位论文 Ⅲ ABSTRACT The history and the current state of the supercritical fluid(SCF) science and technology were reviewed.The complication of the phase behavior ofthe multicomponent systems such as volatiles-polymers/SCF and the difficulties and defects in researches were pointed out.
浙江大学博士学位论文 V On the basis of studyon the solubility of the STfrom thePSinSC-CO,operation pressure was selected in 18MPa at 343K.And the optimalfeedratiOf CO toPSwas 2.3 Lco,/hgPS.SFDV of the PS was put into effect under the conditions above, the concentrationof theSTin thePScanbelowered toab