Polymorphic polymer crystal

{
  "id": "MLC-T-CHM-009207",
  "term": "Polymorphic polymer crystal",
  "field": "Chemistry",
  "definition": "A single polymer crystal built from adjoining domains that have different crystal structures, or polymorphs, of one and the same polymer, with well-defined lattice relationships kept between the domains. Isotactic polypropylene gives crystals containing alpha and gamma phase domains in this way. Polymorphism in general is the wider property of a polymer crystallizing in more than one lattice, each form having its own density and melting point.",
  "subject": "Polymer",
  "see_also": [
    "crystal polymorph"
  ],
  "references": [
    "PAC, 2011, 83, 1831. 'Definitions of terms relating to crystalline polymers (IUPAC Recommendations 2011)' on page 1846 (https://doi.org/10.1351/PAC-REC-10-11-13)"
  ],
  "url": "https://mlchart.com/terminology/chemistry/polymorphic-polymer-crystal/"
}