Category: Nomenclature and Terminology
Provisional Recommendation - Definitions of Terms Relating to Crystalline Polymers
The International Union of Pure and Applied Chemistry is pleased to announce the following Provisional Recommendation.
Abstract:
The recommendations embodied in this document concern the terminology relating to the structure of crystalline polymers and the processes of polymer crystallization. Polymers are normally partly crystalline and polymer crystals (or crystallites) coexist therefore with amorphous regions. Reference to actual polymer crystals of microscopic dimensions is essential to define the characteristic properties of crystalline polymers. Such crystals correspond only very approximately to the infinite, three-dimensionally periodic arrangements of atoms defining the ideal crystalline state.
IUPAC seeks your comments
Comments should be submitted by 31 May 2011. The text of the Provisional Recommendation can be downloaded from http://media.iupac.org/reports/provisional/abstract11/allegra_31052011.html. Comments should be sent to G. Allegra at giuseppe.allegra@polimi.it.
Provisional Recommendations are drafts of IUPAC recommendations comprising topics on terminology, nomenclature, and symbols. These recommendations are made widely available to allow interested parties to comment before the recommendations are finally revised and published in Pure and Applied Chemistry.
For questions, contact Dr. Terrence Renner, Executive Director, at secretariat@iupac.org.