Metastable Polymers for On Demand Transient Electronic Packaging
Technical Report,23 Mar 2015,27 Aug 2017
University of Illinois Champaign Urbana United States
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The thermally-triggered depolymerization of cyclic polyphthalaldehyde cPPA was investigated and tailored to enable thermal processing and molding in bulk quantities. Stabilization of cPPA at elevated temperature was accomplished by removal of the latent Lewis acid catalyst BF3 and by addition of radical inhibitors and a Lewis base. Addition of a plasticizer to the stabilized cPPA enabled the fabrication of a monolithic solid polymer via hot press molding. The bulk material retains the transient properties of cPPA when triggered by sufficient heat or acid.
- Polymer Chemistry