Dispersity in polymer science (IUPAC Recommendations 2009)

  title={Dispersity in polymer science (IUPAC Recommendations 2009)},
  author={Robert Frederick Thomas Stepto},
  journal={Pure and Applied Chemistry},
  pages={351 - 353}
  • R. Stepto
  • Published 1 January 2009
  • Chemistry
  • Pure and Applied Chemistry
Abstract This recommendation defines just three terms, viz., (1) molar-mass dispersity, relative-molecular-mass dispersity, or molecular-weight dispersity; (2) degree- of-polymerization dispersity; and (3) dispersity. "Dispersity" is a new word, coined to replace the misleading, but widely used term "polydispersity index" for Mw/Mn and Xw/Xn. The document, although brief, also has a broader significance in that it seeks to put the terminology describing dispersions of distributions of… 
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