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Stepwise Adsorption for the Formation of Multilayer Thin Films

Jason Hayden Rouse

出版	Lehigh University, 2001
URL	http://books.google.com.hk/books?id=eWP-NwAACAAJ&hl=&source=gbs_api

註釋

The first section of this dissertation describes a detailed study of how the swellability of polyelectrolyte/clay multilayer films by water can be minimized either during either formation or with a post-treatment. Specifically, film swellability can be reduced by either preparing the film using a lower concentration of polyelectrolyte or by using larger clay platelets. A second method for reducing film swellability was to post-treat the polyelectrolyte/clay multilayers using sol-gel chemistry. These studies resulted in data that require the internal structure of the polyelectrolyte/clay multilayer films to be described as containing swellable amorphous regions, non-swellable amorphous regions, and non-swellable polyelectrolyte/clay crystallites. In order to analyze the lateral dimensions of the clay platelets used in these studies, a technique for imaging clay particles by scanning electron microscopy (SEM) was developed.