Weight, Branching, and Crosslinking

Unfortunately, the intractable nature of PPy has made molecular weight determinations virtually impossible. Methods such as GPC and other techniques including light scattering, viscosity measurements, and vapor pressure osmosis, all require the polymer to be dissolved completely. Because PPy prepared by conventional methods does not dissolve, these analyses have not been possible. 

FIGURE 2.14 Polypyrrole chain structure showing a-a and a-(3 couplings leading to chain branching and crosslinking. 

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The counterion/cation effect choice of electrolyte The monomer Chemical polymerization The quest for extra functionality Molecular Structure and Microstructure of Polypyrrole Molecular Weight, Branching and Crosslinking Crystallinity and Molecular Order Surface Morphology and Film Density References... 

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