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The investigations of the dilute aqueous solutions of polyvinylpyrrolidone/fullerene (PVP/C 60 ) complexes by static (SLS) and dynamic (DLS) light scattering showed that strong intermolecular interactions, effective on the distances of about 45-50nm, take place in the solutions. Two concentration ranges are well distinguished in these solutions. Above a critical concentration (c c...
The normalized intensity autocorrelation function g (2) (t) were obtained by dynamic light scattering for moderately concentrated entangled solutions of polyisobutylene in n-heptane at 25.0°C and in isoamyl isovalerate (IAIV) at 25.0°C (Θ). The obtained data have been successfully analyzed by the ‘procedure X’ familiar for determination of mechanical relaxation spectra on the basis of the...
The dynamic light scattering measurements were performed for moderately concentrated entangled solutions of atactic polystyrene in benzene (BZ) at 25.0 o C, in cyclohexane (CH) at 34.5 o C (Θ), and in diethyl malonate (DEM) at 35.0 o C (Θ) to characterize their viscoelastic properties. The results have shown that while the mutual diffusion coefficient D increases in the BZ...
The coil-globule transition behavior of sodium poly(styrene sulfonate) (NaPSS) (M w =1.2x10 6 g/mol) in 4.17M aqueous NaCl solution has been studied by dynamic light scattering. The polymer dimensions show a smooth and continuous contraction below the reference temperature (18 o C). The hydrodynamic radius (<R h >) of NaPSS in this system was reduced from 13.1nm...
This study describes the effect of salt on the aqueous solution property of the anionic terpolymer (SPM/NIPAM/PyMMA) of potassium-2-sulfopropylmethacrylate (SPM), N-isopropylacrylamide (NIPAM), and 1-pyrenemethylmethacrylate (PyMMA) in terms of fluorescence and dynamic light scattering. A plot of the thermally induced changes in I 1 /I 3 and I E /I M ratios for pyrene-labeled...
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