Measurement and prediction of liquid-liquid equilibria for polymer solutions including supercritical monomers

• Project/Area Number: 24360321
• Research Category: Grant-in-Aid for Scientific Research (B)
• Allocation Type: Partial Multi-year Fund
• Section: 一般
• Research Field: Properties in chemical engineering process/Transfer operation/Unit operation
• Research Institution: Hiroshima University
• Principal Investigator: TAKISHIMA Shigeki 広島大学, 工学(系)研究科(研究院), 教授 (10188120)
• Co-Investigator(Kenkyū-buntansha): KIHARA Shinichi 広島大学, 大学院工学研究院, 准教授 (30284524) ; HARUKI Masashi 広島大学, 大学院工学研究院, 助教 (90432682)
• Project Period (FY): 2012-04-01 – 2015-03-31
• Project Status: Completed (Fiscal Year 2014)
• Budget Amount: ¥19,890,000 (Direct Cost: ¥15,300,000、Indirect Cost: ¥4,590,000); Fiscal Year 2014: ¥2,990,000 (Direct Cost: ¥2,300,000、Indirect Cost: ¥690,000); Fiscal Year 2013: ¥2,860,000 (Direct Cost: ¥2,200,000、Indirect Cost: ¥660,000); Fiscal Year 2012: ¥14,040,000 (Direct Cost: ¥10,800,000、Indirect Cost: ¥3,240,000)
• Keywords: 液液平衡 / ポリマー溶液 / 超臨界モノマー / 多分散ポリマー / ポリエチレン / 分子量分布 / 多分散ポリエチレン / 超臨界エチレン / 状態方程式 / 超臨界流体

Outline of Final Research Achievements

Phase behavior and L-L phase equilibria for the hexane + polydisperse polyethylene (PE) and the ethylene + hexane + polydisperse PE were measured and were compared with the prediction by the Sanchez-Lacombe (S-L) equation of state. The following results were obtained: (1) The maximum phase separation pressure at a constant temperature shifted to low PE composition side with increasing polydispersity of PE. (2) The effect of feed PE composition on the PE composition of each liquid phase was different for both phases and different for binary and ternary systems. (3) Solvent-rich phase contained much low-molecular weight components and polymer-rich phase contained much high-molecular weight components. (4) The S-L equation of state could predict the measured phase equilibria and the molecular weight distributions of PE in each phase well.

Research Products

• [Presentation] ヘキサン+多分散ポリエチレン系の高温高圧相平衡 (2014)
  • Author(s): 波多野雄基、藤川 翔平、春木 将司、木原 伸一、滝嶌 繁樹
  • Organizer: 第１６回化学工学会学生発表会（堺大会）
  • Place of Presentation: 堺市
• [Presentation] ヘキサン+多分散ポリエチレン系の高温高圧相挙動 (2013)
  • Author(s): 足立晃太郎, 他4名
  • Organizer: 第15回化学工学会学生発表会(西日本地区)
  • Place of Presentation: 北九州市立大学(北九州市)
  • Year and Date: 2013-03-02
• [Presentation] ヘキサン+多分散ポリエチレン系の高温高圧相平衡 (2013)
  • Author(s): 藤川 翔平、中西 邦夫、春木 将司、木原 伸一、滝嶌 繁樹
  • Organizer: 化学工学会第４５回秋季大会
  • Place of Presentation: 岡山市