Type of Document	Dissertation
Author	Kim, Young Jun
URN	etd-02262007-095955
Title	Kinetic and mechanistic investigations of polyimide formation and characterization of their blends with polybenzimidazoles
Degree	PhD
Department	Chemistry
Advisory Committee	Advisor Name Title McGrath, James E. Committee Chair Dillard, John G. Committee Member Gibson, Harry W. Committee Member Riffle, Judy S. Committee Member Tanko, James M. Committee Member
Keywords	Polyimides Synthesis Benzimidazoles.
Date of Defense	1992-03-05
Availability	restricted
Abstract This dissertation describes kinetic and mechanistic studies of high performance polyimide formation, synthesis and characterization of fully cyclized, molecular weight and end group controlled polyimides, and investigations of high performance polymer blends based upon polyimides and polybenzimidazole. Imidization kinetics were successfully followed by the quantitative non-aqueous titration of the amic acid functional groups as a function of reaction conditions. The homogeneous solution imidization processes were described by auto-acid catalyzed second order kinetics. The effects of heteroatom bridging groups in the diamines and dianhydrides on reaction rates have been investigated and a possible reaction mechanism for the solution imidization processes has been proposed.
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