<?xml version="1.0" encoding="UTF-8"?>
<term>
  <id>08950</id>
  <title>dead polymer chain</title>
  <longtitle>IUPAC Gold Book - dead polymer chain</longtitle>
  <doi>10.1351/goldbook.08950</doi>
  <code>08950</code>
  <status>current</status>
  <synonym><em>synonym</em>: dead macromolecule (in RDP)</synonym>
  <definitions>
    <item>
      <id>1</id>
      <text>Polymer chain which plays no active role in the polymerization.</text>
      <notes>
        <item>A dead polymer chain is a chain unlikely to be activated or reactivated to form a propagating species under the polymerization conditions within the timescale of the polymerization.</item>
        <item>The products of chain termination and irreversible chain transfer comprise dead polymer chains.</item>
      </notes>
      <links>
        <item>
          <term>chain termination</term>
          <url>https://goldbook.iupac.org//terms/view/08946</url>
        </item>
        <item>
          <term>propagating species</term>
          <url>https://goldbook.iupac.org//terms/view/08966</url>
        </item>
      </links>
      <sources>
        <item>PAC, 2022, 94, 1093. 'Terminology for chain polymerization (IUPAC Recommendations 2021)' on page 1120 (https://doi.org/10.1515/pac-2020-1211)</item>
      </sources>
    </item>
  </definitions>
  <altoutputs>
    <html>https://goldbook.iupac.org/terms/view/08950/html</html>
    <json>https://goldbook.iupac.org/terms/view/08950/json</json>
    <plain>https://goldbook.iupac.org/terms/view/08950/plain</plain>
  </altoutputs>
  <citation>Citation: 'dead polymer chain' 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.08950</citation>
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  <disclaimer>The International Union of Pure and Applied Chemistry (IUPAC) is continuously reviewing and, where needed, updating terms in the Compendium of Chemical Terminology (the IUPAC Gold Book). Users of these terms are encouraged to include the version of a term with its use and to check regularly for updates to term definitions that you are using.</disclaimer>
  <accessed>2026-05-30T09:38:59+00:00</accessed>
</term>
