Imide polymers description

Since that time much work has been done in the area of siloxane-imide systems, especially in industrial laboratories. Therefore most of the available information is enclosed in the patent literature 168 175) and, unfortunately, description of the actual polymerization chemistry is very vague. A great majority of these applications utilized disiloxanes in high concentrations in order to obtain soluble polymers with improved toughness. 

Section II of this paper contains a description of the mechanism of NEXAFS spectroscopy, experimental setup and the types of information that can be obtained. Section III presents examples of work by others which serve as an important basis for the interpretation of our studies, and also several experiments on oriented polymer films and Langmuir-Blodgett films. Section IV describes a study of the chemical interaction that takes place when chromium metal is evaporated onto spun polymers, including polyimide. Section V describes the results of a study of poly(amic acid) films grown by epitaxy on clean surfaces of copper and chromium, and the effect of annealing to induce imidization. 

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