物理化学学报 >> 2000, Vol. 16 >> Issue (02): 145-152.doi: 10.3866/PKU.WHXB20000210

研究论文 上一篇    下一篇

超临界二氧化碳中聚氨酯对小分子的吸附作用

叶树集, 陈鸣才, 黄玉惠, 丛广民   

  1. 中国科学院广州化学研究所，广州 510650
  • 收稿日期:1999-05-31 修回日期:1999-08-27 发布日期:2000-02-15
  • 通讯作者: 陈鸣才

Absorption of Small Molecules into Polyurethane in Supercritical Carbon Dioxide

Ye Shu-Ji, Chen Ming-Cai, Huang Yu-Hui, Cong Guang-Min   

  1. Guangzhou Institute of Chemistry,Academia Sinica,Guangzhou 510650
  • Received:1999-05-31 Revised:1999-08-27 Published:2000-02-15
  • Contact: Chen Ming-Cai

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摘要：

研究了超临界CO2 中聚氨酯对乙醇、麝香草酚和β-苯乙醇等小分子的吸附作用 ,观测了超临界CO2 的温度、压力、吸附时间和聚氨酯厚度对小分子吸附量的影响以及小分子在聚氨酯中的释放规律 ,并探讨了小分子的渗透机理.

关键词: 超临界CO2, 聚氨酯, 吸附量, 渗透机理

Abstract:

A systematic study was undertaken in supercritical carbon dioxide to absorb thymol, benzyl carbinol and alcohol into polyurethane by a simple gravimetric method. The uptake of small molecule in PU had been observed with the changes of the factors such as temperature, pressure of supercritical carbon dioxide, absorption time and dimension of PU. Moreover, the mass change of PU after treatment was observed and the impregnation mechanism of small molecule was discussed to explain the experimental results.

Key words: Supercritical carbon dioxide, Polyurethane, Absorption amount, Impregnation mechanism