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Approach to the tricritical point in bimodal polymer solutions

The Journal of Chemical Physics, ISSN: 0021-9606, Vol: 91, Issue: 3, Page: 1897-1903
1989
  • 17
    Citations
  • 0
    Usage
  • 2
    Captures
  • 0
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Metric Options:   Counts1 Year3 Year

Metrics Details

  • Citations
    17
    • Citation Indexes
      17
  • Captures
    2

Article Description

The approach to the tricritical point in bimodal polymer solutions is analyzed in the (meanfield) Flory-Huggins approximation. The parameter governing the thermodynamic properties of the system is the ratio of the molecular weights of the two polymer homologues. When this ratio exceeds a certain value r, a separation in three phases is possible. The different dimensions of the three phase region vary with r as simple characteristic powers of the distance to this tricritical ratio (r-r). Comparison with experiments reveals some shortcomings of the Flory-Huggins approximation. © 1989 American Institute of Physics.

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