Dispersity in polymer science  (IUPAC Recommendation 2009) | Zendy

Stepto R. F. T. | Zendy

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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

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