Universal ratios of characteristic lengths in semidilute polymer solutions

Jung Ren Huang, Thomas A. Witten

研究成果: 雜誌貢獻期刊論文同行評審

2 引文 斯高帕斯(Scopus)

摘要

We use experimental and simulation data from the literature to infer five characteristic lengths, denoted ξs, ξf, ξ, ξφ, and ξD of a semidilute polymer solution. The first two of these are defined in terms of scattering from the solution, the third is defined in terms of osmotic pressure, the fourth is defined by the spatial monomer concentration profile, and the last is defined by cooperative diffusion. In a given solution, the ratios of any of these five lengths are expected to be universal constants. Knowing these constants thus allows one to use one measured property of a solution as a means of inferring others. We calculate these ratios and estimate their uncertainties for solutions under Θ as well as good solvent conditions. The analysis is strengthened by use of scattering properties of isolated polymers inferred from computer simulations.

原文英語
頁(從 - 到)10225-10232
頁數8
期刊Macromolecules
35
發行號27
DOIs
出版狀態已發佈 - 2002 十二月 31

ASJC Scopus subject areas

  • 有機化學
  • 聚合物和塑料
  • 無機化學
  • 材料化學

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