物理化学学报 >> 1999, Vol. 15 >> Issue (06): 488-494.doi: 10.3866/PKU.WHXB19990602

研究论文 上一篇    下一篇

芘从H2O/DMF溶剂向两亲嵌段共聚物平头胶团增溶

赵剑曦, 戴闽光   

  1. 福州大学化学系，福州 350002
  • 收稿日期:1998-07-07 修回日期:1998-09-24 发布日期:1999-06-15
  • 通讯作者: 赵剑曦

Pyrene Solubilization from H2O/DMF Solvent Mixture to the "Crew cut" Micelles of Polystyrene-Polyacrylic Acid Diablock Copolymer*

Zhao Jian-Xi, Dai Min-Guang   

  1. Department of Chemistry,fuzhou University,Fuzhou 350002
  • Received:1998-07-07 Revised:1998-09-24 Published:1999-06-15
  • Contact: Zhao Jian-Xi

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摘要：

发展了从荧光发射谱计算芘（Py）增溶量的方法，以此研究Py从H2O／DMF混合溶剂向PS-b-PAA二嵌段共聚物平头胶团的增溶．实验结果表明，混合溶剂中水含量强烈影响Py的增溶，随水含量增加，Py增溶量增大．结合公式和分布系数，计算并讨论了Py的增溶等温线．理论处理给出了从实验荧光强度直接计算Py在胶团和溶剂相间分布系数的方法.

关键词: 两亲嵌段共聚物, 平头胶团, 混合溶剂, 计算方法, 增溶等温线

Abstract:

 A method of calculation of the amount of pyrene absorbed from the fluorescence emission spectrum has been developed. By this method the solubilization of pyrene from H2O/DMF solvent mixture to the crew-cut micelles of polystyrene-b-polyacrylic acid diblock copolymer has been investigated. The results showed that the solubilization of pyrene depends strongly upon water content in the solvent mixture. The amount 0f pyrene absorbed was enhanced with increasing the water content. The absorption isotherms were calculated and discussed by combination of the formula developed and the partition coefficient Kv. The theoretical treatment suggested an approach to calculate Kv directly from the intensity values measured experimentally.

Key words: Amphiphilic bolck copolymer, Crew-cut micelle, Solvent mixture, Calculating method, Solubiliztion isothrm