The Study of ternary liquid-liquid equilibria and the fluidness of solution contains the poly(DL-lactic) acid

• Main Authors: Chun-Hua Chen, 陳均樺
• Other Authors: 張基昇
• Format: Others
• Language: zh-TW
• Published: 2008
• Online Access: http://ndltd.ncl.edu.tw/handle/smr6hm

碩士 === 國立臺北科技大學 === 化學工程研究所 === 96 === In the study of ternary system of nonsolvent – solvent – polymer phase equilibrium. For substances choosing, we had taken poly-(DL-lactic acid) as our polymer one, chosen ethanol as our solvent one, and taken acetone or water as our nonsolvnet ones. In the first part of our researches, we had used the cloud point method to prepare binodal curve. Experiment temperatures were chosen at 24℃、37℃、45℃, pressure in normal. The second part we used Brookfield instrument to measure the viscosity of ternary component mixtures , to observe the fludility of solutions. According to the experiment data, we have found the phase behavior of our systems depend on temperature. We can used the Flory-Huggins model to correlate the data of binodal curve that the values of three binary interaction parameters were determined from those correlation calculations.