A unified picture of static and dynamic length scales in polymer solutions

Artikel i vetenskaplig tidskrift, 2005

After a thorough study of static and dynamic properties of polystyrene solution, and taking into account the local solvent viscosity, an incontrovertible support for the applicability of blob model from semidilute to high concentrated solutions, is presented. The study demonstrates the functionability of the blob model in predicting III/IV crossovers as a consequence of rodlike structure of the partial chain. The study predicts the theoritical picture of the length scales valid for highly concentrated solutions, with local solvent viscosity taken into account. The present study is also applicable to various macromolecular systems, including DNA and actin filament over wide range of polymer concentrations.