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Sedimentation velocity studies of poly (sodium styrenesulfonate‐co‐2‐ vinylnaphthalene)
Author(s) -
White Brian,
Johnson Paley,
Guillet James E.
Publication year - 1993
Publication title -
polymer international
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.592
H-Index - 105
eISSN - 1097-0126
pISSN - 0959-8103
DOI - 10.1002/pi.4990300321
Subject(s) - sedimentation coefficient , sedimentation , random coil , aqueous solution , molar mass , materials science , exponent , sodium polyacrylate , molecule , macromolecule , sodium , solvent , analytical chemistry (journal) , polymer chemistry , chemistry , chemical engineering , polymer , chromatography , crystallography , composite material , organic chemistry , geology , philosophy , linguistics , biochemistry , metallurgy , raw material , enzyme , engineering , paleontology , circular dichroism , sediment
Sedimentation velocity measurements have been employed to investigate the molecular conformation of poly(sodium styrenesulfonate‐co‐2‐vinylnaphtha‐lene) (PSSS‐VN) in aqueous solution. Single symmetrical boundaries were observed in the molecular weight range of 7‐2‐33‐6 10 4 , indicating that PSSS‐VN exists as a single macromolecular coil and not as an aggregate in aqueous solution. Based on the value of the exponent in the power law which describes the dependence of the weight‐average molar mass on the sedimentation coefficient ( S 20, w o ), PSSS‐VN behaves as a Gaussian coil dissolved in a solvent of moderate quality. Solubilization of eight molecules of 9‐methylanthracene within the core of PSSS‐VN produced no detectable change in the value of the sedimentation coefficient.