Characterization of Metallo-Supramolecular Block Copolymers by Analytical Ultracentrifugation
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Rasa, Mircea; Lohmeijer, Bas G. G.; Hofmeier, Harald; Thijs, Hanneke M. L.; Schubert, Dieter; Schubert, Ulrich S.
- Abstract:
- Applications of analytical ultracentrifugation
in the field of synthetic polymers have followed a clearly
increasing trend in the past few years, concerning the
variety of investigated samples, experimental approaches,
and methods of data analysis. We report a characterization
study of two metallo-supramolecular diblock copolymers
with different block lengths and of a chain extended metallosupramolecular
polymer. The analysis of sedimentation
velocity and sedimentation equilibrium profiles was discussed
in detail and the results were compared to each other,
to determine the molar mass distribution and the state of
association in solution. A simple method for determining the
average translational diffusion coefficients is proposed and
discussed relative to other methods. The average values of
the molar mass and sedimentation coefficient distributions,
the average friction coefficients, and size information were
obtained and discussed.
- Year:
- 2006
- Type of Publication:
- Article
- Journal:
- Macromolecular Chemistry and Physics
- Volume:
- 207
- Pages:
- 2029 - 2041