Star polymers in good solvents from dilute to concentrated regimes: Crossover approach
An introduction is given to the crossover theory of the conformational and thermodynamic properties of star polymers in good solvents. The crossover theory is tested against Monte Carlo simulation data for the structure and thermodynamics of model star polymers. In good solvent conditions, star...
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| Datum: | 2002 |
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| Hauptverfasser: | , |
| Format: | Artikel |
| Sprache: | English |
| Veröffentlicht: |
Інститут фізики конденсованих систем НАН України
2002
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| Schriftenreihe: | Condensed Matter Physics |
| Online Zugang: | http://dspace.nbuv.gov.ua/handle/123456789/120580 |
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| Назва журналу: | Digital Library of Periodicals of National Academy of Sciences of Ukraine |
| Zitieren: | Star polymers in good solvents from dilute to concentrated regimes: Crossover approach / L. Lue, S.B. Kiselev // Condensed Matter Physics. — 2002. — Т. 5, № 1(29). — С. 73-104. — Бібліогр.: 176 назв. — англ. |
Institution
Digital Library of Periodicals of National Academy of Sciences of Ukraine| Zusammenfassung: | An introduction is given to the crossover theory of the conformational and
thermodynamic properties of star polymers in good solvents. The crossover
theory is tested against Monte Carlo simulation data for the structure
and thermodynamics of model star polymers. In good solvent conditions,
star polymers approach a “universal” limit as N → ∞ ; however, there are
two types of approach towards this limit. In the dilute regime, a critical degree
of polymerization N∗
is found to play a similar role as the Ginzburg
number in the crossover theory for critical phenomena in simple fluids. A
rescaled penetration function is found to control the free energy of star polymer
solutions in the dilute and semidilute regions. This equation of state
captures the scaling behaviour of polymer solutions in the dilute/semidilute
regimes and also performs well in the concentrated regimes, where the
details of the monomer-monomer interactions become important. |
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