Title: folded-chain crystal
Long Title: IUPAC Gold Book - folded-chain crystal
DOI: 10.1351/goldbook.F02475
Status: current

Definition
A polymer crystal consisting predominantly of chains that traverse the crystal repeatedly by folding as they emerge at its external surfaces. The re-entry of the chain into the crystal is assumed to be adjacent or near-adjacent within the lattice.

Related Term
- polymer crystal: https://goldbook.iupac.org/terms/view/P04737

Source
- Purple Book, 1st ed., p. 84 (http://old.iupac.org/publications/books/author/metanomski.html)

Other Outputs
- html: https://goldbook.iupac.org/terms/view/F02475/html
- json: https://goldbook.iupac.org/terms/view/F02475/json
- xml: https://goldbook.iupac.org/terms/view/F02475/xml

Citation: Citation: 'folded-chain crystal' in IUPAC Compendium of Chemical Terminology, 5th ed. International Union of Pure and Applied Chemistry; 2025. Online version 5.0.0, 2025. 10.1351/goldbook.F02475
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Accessed: 2026-08-10T09:12:59+00:00