| Abstract: | Dilute solution viscosity measurements of nylon-6 in molten SbCl3 reveal a polyelectrolyte effect that becomes more pronounced with increased molecular weight of the polymer sample. Intrinisic viscosities result in a relationship of [η] = 2.35 × 10?6M1.45w for nylon-6 in SbCl3 at 100°C, which indicates a high polymeric chain extension in molten SbCl3 in the limit of zero concentration. Infrared (IR) and nuclear magnetic resonance (NMR) spectra indicate that a substantial fraction of the amide groups in each polymer chain remains unaffected, whereas the rest is interacted, probably, with SbCl4-ions originating from the self-ionization of SbCl3. |
