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A new clathrate class of syndiotactic poly(p-methylstyrene) with a different chain conformation

Macromolecules, ISSN: 0024-9297, Vol: 38, Issue: 13, Page: 5668-5674
2005
  • 18
    Citations
  • 0
    Usage
  • 5
    Captures
  • 0
    Mentions
  • 0
    Social Media
Metric Options:   Counts1 Year3 Year

Metrics Details

  • Citations
    18
    • Citation Indexes
      18
  • Captures
    5

Article Description

A new crystalline clathrate class of syndiotactic poly(p-methylstyrene) has been found through thermal and WAXS analyses. In these clathrate forms, the polymer chains assume a TGTG conformation with a repetition period of 11.7 ± 0.1 Å and t2 symmetry. The new conformation, supported by molecular mechanics calculations, presents a cavity, favorable to the formation of clathrate structure, only on one side of the polymer chain. This cavity is bigger than those presented by this polymer with a helical s(2/1)2 chain conformation found for all the other clathrates. After annealing, the clathrates of this new class are transformed in form II. For this new class of clathrates the term γ is proposed. © 2005 American Chemical Society.

Bibliographic Details

Vittorio Petraccone; Giuseppe Esposito; Oreste Tarallo; Lucia Caporaso

American Chemical Society (ACS)

Chemistry; Materials Science

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