Skip to main content
U.S. Department of Energy
Office of Scientific and Technical Information

Frontal Polymerization of Dihydrofuran Comonomer Facilitates Thermoset Deconstruction

Journal Article · · Chemistry of Materials

Frontal ring-opening metathesis polymerization (FROMP) is a rapid, low-energy manufacturing reaction that is useful for curing thermosetting materials. FROMP of dicyclopentadiene (DCPD) results in poly(dicyclopentadiene) (p(DCPD)), a tough thermoset with excellent mechanical performance and chemical stability. Like most thermosets, p(DCPD) cannot be reprocessed and is therefore difficult to recycle. Previous work demonstrated that the incorporation of a small quantity of cleavable units in the strand segments of p(DCPD) networks enables their deconstruction. Here, we report that a commercially available multifunctional comonomer, 2,3-dihydrofuran (DHF), both acts as a potent Grubbs catalyst inhibitor during FROMP and introduces acid cleavable units. The resulting materials retain high performance characteristics, including glass-transition temperatures ranging from 115 to 165 °C and ultimate strength ranging from 35 to 40 MPa. The addition of DHF above critical loading levels enables deconstructable thermosets. Here, we further demonstrate freeform three-dimensional (3D) printing of deconstructable thermosets via frontal polymerization.

Research Organization:
University of Illinois at Urbana-Champaign, IL (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES)
Grant/Contract Number:
SC0023457
OSTI ID:
2370403
Alternate ID(s):
OSTI ID: 1981831
Journal Information:
Chemistry of Materials, Journal Name: Chemistry of Materials Journal Issue: 19 Vol. 34; ISSN 0897-4756
Publisher:
American Chemical Society (ACS)Copyright Statement
Country of Publication:
United States
Language:
English

References (38)

Frontal curing of epoxy resins: Comparison of mechanical and thermal properties to batch-cured materials journal November 1997
Self‐Regulative Direct Ink Writing of Frontally Polymerizing Thermoset Polymers journal April 2022
Cure-on-demand wood adhesive based on the frontal polymerization of acrylates: Cure-On-Demand Wood Adhesive journal July 2016
Synthesis of new telechelic oligomers and macro-monomers by “constructive degradation” journal July 1994
UV-ignited frontal polymerization of an epoxy resin journal January 2004
Frontal cationic curing of epoxy resins journal May 2010
Effect of limonene on the frontal ring opening metathesis polymerization of dicyclopentadiene journal August 2015
Degradable precision polynorbornenes via ring-opening metathesis polymerization journal November 2015
The effect of acrylate functionality on frontal polymerization velocity and temperature journal March 2019
Recycling technologies for thermoset composite materials—current status journal August 2006
Successful closed-loop recycling of thermoset composites journal April 2009
Kinetic analysis of polydicyclopentadiene oxidation journal August 2017
Thermosetting (bio)materials derived from renewable resources: A critical review journal April 2010
Degradable thermosets based on labile bonds or linkages: A review journal January 2018
Cross-Linking Agents for Enhanced Performance of Thermosets Prepared via Frontal Ring-Opening Metathesis Polymerization journal September 2020
Survey of Catalysts for Frontal Ring-Opening Metathesis Polymerization journal May 2021
Degradable Polyphosphoramidate via Ring-Opening Metathesis Polymerization journal September 2020
Molecularly Designed Additives for Chemically Deconstructable Thermosets without Compromised Thermomechanical Properties journal June 2021
Cascade Alternating Metathesis Cyclopolymerization of Diynes and Dihydrofuran journal April 2022
Controlled Alternating Metathesis Copolymerization of Terminal Alkynes journal June 2022
Frontal Ring-Opening Metathesis Polymerization of Exo-Dicyclopentadiene for Low Catalyst Loadings journal April 2016
Alkyl Phosphite Inhibitors for Frontal Ring-Opening Metathesis Polymerization Greatly Increase Pot Life journal May 2017
Frontal Ring-Opening Metathesis Copolymerization: Deviation of Front Velocity from Mixing Rules journal June 2019
Degradable Polyacetals/Ketals from Alternating Ring-Opening Metathesis Polymerization journal January 2020
Epoxy Resin/Polyurethane Hybrid Networks Synthesized by Frontal Polymerization journal March 2006
Plastics Derived from Biological Sources: Present and Future: A Technical and Environmental Review journal December 2011
End Capping Ring-Opening Olefin Metathesis Polymerization Polymers with Vinyl Lactones journal July 2008
Alternating Cascade Metathesis Polymerization of Enynes and Cyclic Enol Ethers with Active Ruthenium Fischer Carbenes journal July 2020
Enol Ethers Are Effective Monomers for Ring-Opening Metathesis Polymerization: Synthesis of Degradable and Depolymerizable Poly(2,3-dihydrofuran) journal December 2019
Degradable Cyclooctadiene/Acetal Copolymers: Versatile Precursors to 1,4-Hydroxytelechelic Polybutadiene and Hydroxytelechelic Polyethylene journal October 1995
Frontal Ring-Opening Metathesis Polymerization of Dicyclopentadiene journal September 2001
First Synthesis of a Polyurethane by Frontal Polymerization journal March 2003
UV-Induced Frontal Polymerization of Multifunctional (Meth)acrylates journal June 2005
Functional Polyolefins Containing Disulfide and Phosphoester Groups: Synthesis and Orthogonal Degradation journal February 2014
A versatile approach for the synthesis of degradable polymers via controlled ring-opening metathesis copolymerization journal November 2021
Rapid energy-efficient manufacturing of polymers and composites via frontal polymerization journal May 2018
Cleavable comonomers enable degradable, recyclable thermoset plastics journal July 2020
A Review on the Potential and Limitations of Recyclable Thermosets for Structural Applications journal October 2019

Figures / Tables (5)