高等学校化学学报 ›› 2004, Vol. 25 ›› Issue (2): 385.

• 研究简报 • 上一篇    下一篇

聚氧乙烯超薄膜中构象变化的红外光谱研究

陈宙, 王震, 杨睿, 谢续明   

  1. 清华大学化工系高分子研究所, 材料研究中心教育部先进材料重点实验室, 北京 100084
  • 收稿日期:2003-02-24 出版日期:2004-02-24 发布日期:2004-02-24
  • 通讯作者: 谢续明(1962年出生),男,博士,教授,主要从事高分子物理化学和聚合物新型材料的研究.E-mail;xxm2dce@mail.tsinghua.edu.cn E-mail:xxm2dce@mail.tsinghua.edu.cn
  • 基金资助:

    国家自然科学基金(批准号;20174022);国家重大研究计划子课题(批准号;90103035);清华大学分析测试基金资助

IR Studies on Conformation Changes of Poly(ethylene oxide) Thin Films

CHEN Zhou, WANG Zhen, YANG Rui, XIE Xu-Ming   

  1. Institute of Polymer Department of Chemical Engineering, Advanced Materials Laboratory of Materials Research Center of Education Ministry, Tsinghua University, Beijing 100084, China
  • Received:2003-02-24 Online:2004-02-24 Published:2004-02-24

关键词: 聚氧乙烯, 构象, 超薄膜, 红外光谱

Abstract: The conformation changes in PEO thin films were studied by means of FTIR-ATR. The results showed that there were some pronounced intensity changes of some bands in IR spectra of PEO thin films when the film thickness was changed. With the decrease of the thickness of the PEO films, the amount of the gauche conformation relative to the trans conformation of PEO crystal increased. This conformation change indicates PEO chains prefer to assume the helical structure near the surface of the substrate, which should be resulted from the interactions between PEO chains and the substrate. This suggests the possibility for using thickness to adjust PEO chains conformation in the crystalline area.

Key words: PEO, Conformation, Thin film, IR spectrum

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