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Published on: January 26, 2019
Adhesion promotion via noncovalent interactions in self-healing polymers
Gerald O Wilson1, Mary M Caruso, Stuart R Schelkopf
1Department of Materials Science and Engineering, University of Illinois at Urbana-Champaign, USA.
ACS Applied Materials & Interfaces
|July 7, 2011
Summary
Dimethylnorbornene ester (DNE) improves epoxy adhesion when copolymerized with dicyclopentadiene (DCPD). Microcapsules containing these monomers enhance self-healing efficiency in epoxy matrices.
Area of Science:
- Materials Science
- Polymer Chemistry
Background:
- Adhesion promoters are crucial for enhancing material interfaces.
- Copolymerization offers a route to tailor polymer properties.
Purpose of the Study:
- To investigate the use of Dimethylnorbornene ester (DNE) as a noncovalent adhesion promoter.
- To evaluate the copolymerization of DNE with dicyclopentadiene (DCPD) and its effect on epoxy adhesion.
- To assess the self-healing capabilities of microcapsules containing DCPD/DNE blends.
Main Methods:
- Copolymerization of DNE and DCPD.
- Assessment of adhesion to an EPON 828 epoxy matrix.
- Urea-formaldehyde microencapsulation of monomer blends.
- In situ self-healing experiments.
Main Results:
- DNE copolymerized with DCPD, yielding improved adhesion to an EPON 828 epoxy matrix compared to poly(DCPD) alone.
- The mechanical properties of the DCPD/DNE copolymer were comparable to poly(DCPD).
- Microcapsules containing DCPD/DNE blends demonstrated improved self-healing efficiency in epoxy samples.
Conclusions:
- DNE is an effective noncovalent adhesion promoter for DCPD-based copolymers.
- The DCPD/DNE copolymer offers enhanced adhesion without compromising mechanical integrity.
- Microencapsulated DCPD/DNE systems show promise for developing self-healing materials.
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