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Current Project

Polymer Division (IV)


Number: 2003-019-2-400

Title: Definitions of terms relating to crystalline polymers - revision of IUPAC Recommendations 1988

Task Group
Giuseppe Allegra

Members: D.C. Bassett, J. Blackwell, P. Geil, J. He, M. Hess, Jung-Il Jin, B. Lotz, S.V. Meille, W. Mormann, C.K. Ober, R.F.T. Stepto, J. Vohlidal and W.J. Work

To update the previous IUPAC Document by 1) accounting for new experimental results, 2) integrating crystallographic, conformational and morphological terminology relating to polymers and providing new, significant examples, 3) harmonising with other documents of the Subcommittee on Macromolecular Terminology.

> for a copy of the original document, see chapter 4 in the so-called purple book

The proposed revision will be based on the following points:

1 - In view of the rapid development and widespread application of the experimental techniques, explicit reference will be made to results from solid-state NMR, AFM, electron microscopy and diffraction, SANS and SAXS, FT-IR and Raman spectroscopy etc., whenever appropriate.

2 - Further examples will be given, especially those that correlate morphology with local conformation of the polymer chains.

3 - Reference will be made to biological macromolecules that crystallise as non-globular chains.

4 - Some definitions relating to chirality of biological macromolecules and to stereoregularity of synthetic polymers will be compared and harmonised.

5 - Definitions of terms belonging to general physical chemistry, such as crystal, unit cell etc. will be avoided as much as possible.

6 - Disorder in crystalline polymers will be covered. Some choices are required, such as whether or not to mention the so-called two-phase model and to deal with the issue of static vs dynamic disorder.

7 - Wider reference to and fuller integration with other documents of the Subcommittee on Macromolecular Terminology will be attempted, especially with regard to the Liquid Crystal Document, the Glossary of Basic Terms and the Polymer Solutions Document.


May 2006 - an extension till Sep 2008 has been approved to facilitate completion of this project.

Last update: 17 April 2007


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Page last modified 17 April 2007.
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