上海交通大学学报

上海交通大学学报（自然版）

• 物理学 • 上一篇    下一篇

力学谱技术在聚合物流体结构转变过程中的研究进展

朱震刚，吴学邦，周学懋，刘长松   

  1. (中国科学院 固体物理研究所 材料物理重点实验室， 合肥 230031)
  • 收稿日期:2009-03-20 修回日期:1900-01-01 出版日期:2010-05-31 发布日期:2010-05-31

Progress in the Studies of Structural Changes in Polymer Liquids by Mechanical Spectroscopy

ZHU Zhengang,WU Xuebang,ZHOU Xuemao,LIU Changsong   

  1. (Key Laboratory of Materials Physics, Institute of Solid State Physics, Chinese Academy of Sciences, Hefei 230031, China)
  • Received:2009-03-20 Revised:1900-01-01 Online:2010-05-31 Published:2010-05-31

摘要： 介绍了近年来利用力学谱技术研究聚合物流体(聚合物熔体和高分子浓溶液)结构转变过程的进展，分析了分子质量和共混物质量浓度对单分散聚合物熔体液/液转变过程的影响及其液/液转变机制，并介绍了嵌段共聚物聚氧乙烯/聚氧丙烯/聚氧乙烯(PEOPPOPEO)浓溶液的相转变过程随温度、聚合物质量浓度和NaCl等因素变化的关系，指出了今后力学谱技术在软凝聚态领域有待于进一步研究的方向.

关键词: 聚合物流体, 结构转变, 内耗

Abstract: The recent progress in the investigation of structural changes in polymer liquids (i.e. polymer melts and concentrated solutions) by mechanical spectroscopy was reviewed. The effects of molecular weight and composition of polymer blends on the liquidliquid transition were analyzed, and the mechanism of the liquidliquid transition was clarified. The relationships between the phase behaviors of concentrated aqueous solutions of poly (ethylene oxide)poly(propylene oxide)poly(ethylene oxide) (PEOPPOPEO) and temperature, concentration and the addition of NaCl were presented. The outlook on some of the most promising areas that being studied through mechanical spectroscopy in the area of soft matter was also pointed out.

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