Double-strand polymer

{
  "id": "MLC-T-CHM-003420",
  "term": "Double-strand polymer",
  "field": "Chemistry",
  "definition": "A polymer whose macromolecules have two parallel strands tied together, either by regular rungs as in ladder polymers or by shared tetrahedral atoms as in spiro polymers. The fused backbone cannot rotate freely, which makes such polymers stiff and thermally stable. Poly(benzimidazobenzophenanthroline), known as BBL, is a ladder polymer.",
  "subject": "Polymer",
  "see_also": [
    "double-strand macromolecule",
    "ladder macromolecule",
    "macromolecule",
    "polymer",
    "spiro macromolecule"
  ],
  "references": [
    "PAC, 1996, 68, 2287. 'Glossary of basic terms in polymer science (IUPAC Recommendations 1996)' on page 2304 (https://doi.org/10.1351/pac199668122287)"
  ],
  "url": "https://mlchart.com/terminology/chemistry/double-strand-polymer/"
}