Organosilicon Polymers Incorporating the Bicyclo(2.2.2)-Octane Moiety

摘要

The efforts in this project has inv olved two goals: the synthesis of main chain(MC) liquid crystalline (LC) polysiloxanes on one hand, and the determination of the utility of an integrated system for TGA/FTIR analysis in studying the conversion of precursor polymers to ceramic materials. Two approaches were used for the synthesis of MC LC polysiloxanes. In one case, diols such as highenol and hisphenol a ere reacted with bifunctional Si-H compounds such as diphenylsilane using Zn octoate as catalyst. In another case, diols were reacted with dichlorosilanes such as dimethyldichlorosilane. Characterization of the polymers by NMR, DSC, polarizing optical microscopy, TGA, FTIR, etc. has been completed. Additionally, the pyrolysis of simple alkylamide containing Si and Ti had been initiated. This will serve as model systems for ceramic precursors we are investigating in our laboratories.