inelastic light scattering experiments demonstrate the existence of a conformational change upon ionization of a weak acid poiyelectrolyte in aqueous salt solutions. The swelling of the polymeric coil occurs at a neutmlization degree increasing with mofecnlar weight.
Static light scattering by solutions of salt-free polyelectrolytes
✍ Scribed by R. Krause; E.E. Maier; M. Deggelmann; M. Hagenbüchle; S.F. Schulz; R. Weber
- Publisher
- Elsevier Science
- Year
- 1989
- Tongue
- English
- Weight
- 903 KB
- Volume
- 160
- Category
- Article
- ISSN
- 0378-4371
No coin nor oath required. For personal study only.
✦ Synopsis
Static light scattering measurements on salt-free aqueous solutions of charged polystyrenesulfonate are reported. Samples of two different molecular weights MW 1 = 3.54 x l0 s g/tool and MW 2 = 1.06 x 106 g/tool have been investigated in the dilute/semidilute regime. A single broad peak occurs in the scattered intensity. The scattering vector of the peak maximum increases with molecular weight and it scales with concentration as c °36. The results are compared with previous investigations by means of light-, small angle neutron, and X-ray scattering techniques.
📜 SIMILAR VOLUMES
Dynamic and electrophoretic light scattering were used to study the diffusion and electrophoretic mobility of poly(dimethyldiallylammonium chloride) as a function of polymer molecular weight in salt-free solutions. Two relaxation modes characterized as fast diffusion (D,) and slow diffusion (D,) wer