<?xml version="1.0" encoding="utf-8"?><!DOCTYPE Zthes SYSTEM "http://zthes.z3950.org/xml/zthes-05.dtd">  <Zthes><term><termId>31341486</termId><termName>chain scission</termName><termType>PT</termType><termNote><![CDATA[ Refers to cleavage of the bonds that hold a polymer chain together, as in rubber as a result of heating. ]]></termNote><termCreatedDate>2026-03-30 20:32:05</termCreatedDate><relation><relationType>UF</relationType><termId>31341487</termId><termName>scission, chain</termName><termType>ND</termType></relation><relation><relationType>BT</relationType><termId>31317720</termId><termName>decomposition</termName><termType>PT</termType></relation></term>  </Zthes>