Term: folded-chain crystal
https://doi.org/10.1351/goldbook.F02475

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 Terms:
1) polymer crystal (http://doi.org/10.1351/goldbook.P04737).

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

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. https://doi.org/10.1351/goldbook.F02475

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