Abstract
Abstract The conformation of poly(4-vinylpyridine) (P4VP) in aqueous solutions of sulfuric acid was studied by light scattering and viscosity measurements at 25 °C. Comparing the experimental intramolecular particle scattering factor (P(θ)) and Debye’s theory, it was confirmed that in the Θ-state where the apparent second virial coefficient is zero, the conformation of P4VP is characterized as a Gaussian chain. The intrinsic viscosities of P4VP in aqueous solutions of sulfuric acid of various concentrations were analyzed according to the theoretical equation of Tanaka. The value of the characteristic ratio (C∞) increased with increasing H2SO4 concentration.
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