纺织学报 ›› 2005, Vol. 26 ›› Issue (1): 4-6.

• 科研报告 • 上一篇    下一篇

平平加O-20单分子膜的解吸扩散系数

姚永毅,朱谱新,胡杰,吴大诚   

  1. 四川大学纺织研究所 四川成都610065
  • 收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:2005-02-15 发布日期:2005-02-15

Diffusion coefficient for peregal O-20 desorpted from its monolayer

YAO Yong-yi;ZHU Pu-xin;HU Jie;WU Da-cheng   

  1. Textile Institute;Sichuan University;Chengdu;Sichuan 610065;China
  • Received:1900-01-01 Revised:1900-01-01 Online:2005-02-15 Published:2005-02-15

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摘要： 由平平加O-20铺展单分子膜的动态表面压Πt,用外推法可以得到动态表面浓度c。根据Πt～c关系 ,计算出平平加O-20从空气 水界面向水本体解吸扩散系数 (D0) ,其数量级为 10-4～10-3cm2/s。结果表明 ,初始表面浓度c0是影响D0的重要因素。

Abstract:

From the dynamic surface pressure of Peregal O-20 spreading monolayres, the variation of the model material surface concentrations was obtained by extrapolating method.Taking advantage of the relation Πt～c , the diffusion coefficients (D0) of the Peregal O-20 desorpted from the surface at air-water interface to the aqueous bulk was calculated.The order of D0 was 10-4～10-3 cm2/s.The initial surface concentration is the key factor of influence on the diffusion coefficients of Peregal O-20.

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