Premium
Dispersity in polymer science (IUPAC Recommendation 2009)
Author(s) -
Stepto R. F. T.
Publication year - 2010
Publication title -
polymer international
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.592
H-Index - 105
eISSN - 1097-0126
pISSN - 0959-8103
DOI - 10.1002/pi.2748
Subject(s) - dispersity , molar mass , polymer , chemical nomenclature , polymer science , terminology , polymerization , materials science , molar mass distribution , nanotechnology , polymer chemistry , chemical engineering , chemistry , organic chemistry , philosophy , engineering , linguistics
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 M̄ w / M̄ n and X̄ w / X̄ n . The document, although brief, also has a broader significance in that it seeks to put the terminology describing dispersions of distributions of properties of polymeric (and non‐polymeric) materials on an unambiguous and justifiable footing. Copyright © 2009 Society of Chemical Industry