• 作者：Günter Reiter (Editor) and James Forrest (Guest Editor)
• 刊名：The European Physical Journal E - Soft Matter
• 出版年：2001
• 出版时间：July 2001
• 年：2001
• 卷：5
• 期：4
• 全文大小：43 KB
• 刊物类别：Physics and Astronomy
• 刊物主题：Physics
  Soft Matter and Complex Fluids
  Biotechnology
  Physical Chemistry
  Polymer Sciences
  
• 出版者：Springer Berlin / Heidelberg
• ISSN：1292-895X

In recent years, there have been numerous reports of anomalous behavior of polymers in thin films. These observations, encompassing both structural and dynamical behavior, have attracted a great deal of interest. Measurements showing such anomalous behavior include density (irreversible and reversible changes after annealing below the bulk glass transition temperature), film stability and dewetting, glass transition temperature, diffusion coefficient and chain conformation and relaxation. The lack of a definitive M_w dependence in many of these studies means that it is not yet clear if the molecular size is a defining parameter in these observations. Alternatively, the surface to volume ratio may make such systems dependent on the (equally poorly understood) properties of polymer surfaces and interfaces. Despite a growing literature in this area, it is becoming increasingly obvious that a clear understanding of thin film properties has not yet been reached.