Cross-Linking Agents for Enhanced Performance of Thermosets Prepared via Frontal Ring-Opening Metathesis Polymerization

Douglas G. Ivanoff, Jaeuk Sung, Sydney M. Butikofer, Jeffrey S. Moore, Nancy R. Sottos

Research output: Contribution to journalArticlepeer-review

Abstract

Frontal polymerization (FP) is a self-propagating reaction in which the reactive zone propagates through a monomer solution at a steady velocity. Using FP, polymeric materials are cured rapidly with minimal energy input. Here, we produce high-glass-transition-temperature thermosets via frontal ring-opening metathesis polymerization (FROMP) of dicyclopentadiene (DCPD) with norbornene-based cross-linkable co-monomers that enable tuning of the cross-link density. The glass-transition temperatures of poly(DCPD) systems are systematically varied from 138 to 219 °C by altering the amount of cross-linking co-monomers in the resin. Front velocities exceeding 5 cm·min-1 enable rapid, solvent-free production of thermoset materials with a 99% degree of cure and yield strength of 57 MPa. The DCPD-norbornene co-monomer resins are cured with 6 orders of magnitude less energy than a traditional oven cure and have a Tg nearly 90 °C higher than reported thermosets of DCPD prepared via FROMP.

Original languageEnglish (US)
Pages (from-to)8360-8366
Number of pages7
JournalMacromolecules
Volume53
Issue number19
DOIs
StatePublished - Oct 13 2020

ASJC Scopus subject areas

  • Organic Chemistry
  • Polymers and Plastics
  • Inorganic Chemistry
  • Materials Chemistry

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