学術雑誌論文

学術雑誌論文

text

Polymer. 2008, 49(19), p. 4174-4179

Dimensions and viscosity behavior of polyelectrolyte brushes in aqueous sodium chloride. A polymacromonomer consisting of sodium poly(styrene sulfonate)

Elsevier BV

英語

text

2008-09-09

https://doi.org/10.1016/j.polymer.2008.07.047

Nine samples of a polymacromonomer consisting of sodium poly(styrene sulfonate) and having a side-chain polymerization degree of 15 are investigated by light scattering, small-angle X-ray scattering, and viscometry with 0.05 M aqueous NaCl at 25 °C as the solvent. The (total) weight-average molecular weight M_w ranges from 2.2 × 10^4 to 7.1 × 10^6. The radii of gyration, scattering functions, and intrinsic viscosities determined as functions of Mw are analyzed in terms of the cylindrical wormlike chain model. The estimated Kuhn segment length of about 120 nm is much larger than that (16 nm) for the polystyrene polymacromonomer with the equivalent side-chain length in toluene, a good solvent, while the chain thickness (5.5 nm) is comparable to or only slightly larger than that (5 nm) of the nonionic polymer. It is thus concluded that the electrostatic repulsion between side chains significantly stiffens the main chain of the polyelectrolyte brush.

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Dimensions and viscosity behavior of polyelectrolyte brushes in aqueous sodium chloride. A polymacromonomer consisting of sodium poly(styrene sulfonate)

Elsevier BV

英語

2008-09-09

Polymer

49

19

4174

4179

https://doi.org/10.1016/j.polymer.2008.07.047

https://hdl.handle.net/11094/25936