twinned polymer crystal

https://doi.org/10.1351/goldbook.14260
Polymer crystal in which two or more single crystalline domains of the same crystal polymorph, with different lattice orientations, coexist.
Notes:
  1. Some of the lattice directions, very often the chain axis directions, remain parallel in the different domains of twinned crystals.
  2. The lattice orientations in the different domains of twinned crystals are generally symmetry-related.
See also: polymer single crystal
Source:
PAC, 2011, 83, 1831. (Definitions of terms relating to crystalline polymers (IUPAC Recommendations 2011)) on page 1859 [Terms] [Paper]
Citation: 'twinned polymer 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.14260 RIS BibTex EndNote
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