Solventless polyamic acid

Solventless Polyamic Acid Consequences for Reactivity with Metals T. Strunskus1, M. Grunze2, and S. Gnanarajan3... 

The x-ray photoelectron spectra for both dissolved and solventless polyamic acid have been reported in the literature [2-8], It has been noted previously by us [5-7], that the spectra for solventless PAA and PI exhibit a pronounced deficiency for the Cls and Ols carbonyl emission. This, together with an analysis of the Nls lineshape and the Ols and Cls shake up features, allows us to derive conclusions on the chemical nature of solventless polyamic acid and to explain it s high reactivity towards metals as discussed below. 

In this article we discuss the core level spectra of solventless prepared poly (N,N -(p,p -oxydiphenylene) pyromellitamic acid) or PMDA/ODA polyamic acid (PAA) films with particular emphasis on the chemical composition and on the Ols and Cls "shake up" transitions. Both vapor deposited polyamic acid and the resulting polyimide films show an excess of oxydianiline (ODA) and a deficiency of carbonyl groups. 

In the following we will present some data on the interaction of polyamic acid with metals which demonstrates the high reactivity of the carboxyl group in solventless PAA. 

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