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›› 2009, Vol. 9 ›› Issue (4): 722-730.

• 过程与工艺 • 上一篇    下一篇

Micellization, Interaction and Microenvironment in the Mixed Solution of Pluronics and Surfynol 104 with Nuclear Magnetic Resonance

宋寒 郭晨 马俊鹤 唐亚林 P. Bahadur 刘会洲 刘会洲   

  1. 中国科学院过程工程研究所分离科学与工程实验室 中科院过程工程研究所分离科学与工程青年实验室、生化工程国家重点实验室、中科院研究生院 中国科学院研究生院 Department of Chemistry, V. N. South Gujarat University 中国科学院过程工程研究所分离工程与工程青年实验室
  • 收稿日期:2009-04-08 修回日期:2009-05-07 出版日期:2009-08-20 发布日期:2009-08-20
  • 通讯作者: 宋寒

Micellization, Interaction and Microenvironment in the Mixed Solution of Pluronics and Surfynol 104 with Nuclear Magnetic Resonance

SONG Han, GUO Chen, MA Jun-he, XIANG Jun-feng, TANG Ya-lin, LIU Hui-zhou, LIU Hui-zhou,   

  1. Laboratory of Separation Science and Engineering, State Key Laboratory of Biochemical Engineering, Institute of Process and Engineering, Chinese Academy of Sciences Young Scientist Laboratory of Separation Science and Engineering, State Key Laboratory of Biochemical Engineering, Institute of Process Engineering, Chinese Academy of Sciences Institute of Chemistry, Chinese Academy of Sciences Chinese Academy of Sciences Department of Chemistry, V. N. South Gujarat University Institute of Process Engineering, Chinese Academy of Sciences
  • Received:2009-04-08 Revised:2009-05-07 Online:2009-08-20 Published:2009-08-20
  • Contact: SONG Han,

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4

摘要： The micellization, intermolecular interaction and microenvironment of molecular segments in the mixed aqueous solution of PEO-PPO-PEO triblock copolymer (Pluronic? F88, P84 and P123) and Surfynol? 104 (S104) were studied by nuclear magnetic resonance method. The results showed that the addition of S104 decreased the critical micellization temperature of copolymer. When its concentration was 0.5 g/L, the most reduction was up to more than 10℃ for F88, which was most hydrophilic in the selected copolymers. This reduction was caused by the hydrophobic interaction between S104 molecules and PPO segments. The addition of S104 enhanced the hydration of PEO segments most obviously for P123. And S104 slightly increased the hydration of PPO segments before the micellization, but obviously decreased their hydration after micellization, which was attributed to the hydrophobic interaction mentioned above and temperature rising. This effect was most observable for F88.

关键词: pluronic triblock copolymer, surfynol 104?, micellization, microenvironment, nuclear magnetic resonance

Abstract: The micellization, intermolecular interaction and microenvironment of molecular segments in the mixed aqueous solution of PEO-PPO-PEO triblock copolymer (Pluronic? F88, P84 and P123) and Surfynol? 104 (S104) were studied by nuclear magnetic resonance method. The results showed that the addition of S104 decreased the critical micellization temperature of copolymer. When its concentration was 0.5 g/L, the most reduction was up to more than 10℃ for F88, which was most hydrophilic in the selected copolymers. This reduction was caused by the hydrophobic interaction between S104 molecules and PPO segments. The addition of S104 enhanced the hydration of PEO segments most obviously for P123. And S104 slightly increased the hydration of PPO segments before the micellization, but obviously decreased their hydration after micellization, which was attributed to the hydrophobic interaction mentioned above and temperature rising. This effect was most observable for F88.

Key words: pluronic triblock copolymer, surfynol 104?, micellization, microenvironment, nuclear magnetic resonance

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