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 language | English (US) |
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Pages (from-to) | 8360-8366 |
Number of pages | 7 |
Journal | Macromolecules |
Volume | 53 |
Issue number | 19 |
DOIs | |
State | Published - Oct 13 2020 |
ASJC Scopus subject areas
- Organic Chemistry
- Polymers and Plastics
- Inorganic Chemistry
- Materials Chemistry