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化学学报
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化学学报 ›› 2005, Vol. 63 ›› Issue (7): 562-566. 上一篇    下一篇

研究论文

聚氧乙烯-粘土-碱金属离子插层复合物作用机理研究

孙明波1,2，侯万国*,1，孙德军1，戴肖南1   

  1. (1山东大学胶体与界面化学教育部重点实验室 济南 250100)
    (2石油大学(华东)石油工程学院 东营 257061)
  • 投稿日期:2004-07-17 修回日期:2005-03-05 发布日期:2010-12-10
  • 通讯作者: 侯万国

Interaction Mechanism Study on Poly(ethylene oxide)-Clay-Alkali Metal Ion Intercalation Composites

SUN Ming-Bo1,2, HOU Wan-Guo*,1, SUN De-Jun1, DAI Xiao-Nan1   

  1. (1 Key Laboratory for Colloid and Interface Chemistry of Education Ministry, Shandong University, Jinan 250100)
    (2 College of Petroleum Engineering, Petroleum University, Dongying 257061)
  • Received:2004-07-17 Revised:2005-03-05 Published:2010-12-10
  • Contact: HOU Wan-Guo

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1232

被引次数

4

测量了聚氧乙烯(PEO)-粘土-K＋/Na＋插层复合物在不同相对湿度环境中的相对吸水量, 研究了相对吸水量与粘土层间距d001之间的关系, 并结合X射线光电子能谱的研究结果, 探讨了复合物中PEO、粘土与碱金属离子三者之间的相互作用. 在K-MMT-PEO复合物中, K＋与PEO和粘土表面都存在配合作用, 形成稳定的三元配合物, 在不同相对湿度下, K-MMT-PEO配合物吸水能力较低, 层间距基本不变. 在Na-MMT-PEO复合物中, Na＋与PEO形成配合物, 水分子能破坏Na＋-PEO之间的配合作用, 使PEO和Na＋各自形成水化层, 因此随着相对湿度的增加Na-MMT-PEO复合物的相对吸水量和层间距都增大.

关键词: 聚氧乙烯, 粘土, 配合物, 机理

In this paper, the water content of poly(ethylene oxide)-clay-alkali metal ion intercalation composites in different relative humidity was measured, and the relationship between water content and interlayer space was studied. Combined with the X-ray photoelectron spectroscopy results, the interactions of poly(ethylene oxide) (PEO), clay MMT and alkali metal ions in the composites were discussed. In the K-MMT-PEO composites, K＋was coordinated with MMT and PEO to form stable complex, and under the conditions of different relative humidity, the water contents of the K-MMT-PEO composites were low and the interlayer space kept nearly constant. In the Na-MMT-PEO composites, Na＋was coordinated with PEO only, water molecules could destroy this complex, and under the conditions of different relative humidity, the water contents of the Na-MMT-PEO composites were high and the interlayer space was increased with water contents.

Key words: poly(ethylene oxide), clay, complex, mechanism