Metastable Packaging For Transient Electronics
Final rept. 9 Jul 2013-25 Apr 2014
ILLINOIS UNIV AT URBANA-CHAMPAIGN
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Metastable polymeric materials were synthesized, formulated with additives and microcapsules, and then processed into films that served as substrates on which electronic devices were fabricated. New to this effort was the intentional development of depackaging cascades -- the rational design of materials that depolymerize on exposure to specific stimuli. In particular, we investigated acid-sensitive, depolymerizable polyphthalaldehyde PPA, and thermally- and base-sensitive polyolefin sulfone POS polymers. Conditions for film preparation and fabrication of transient electronics on robust PPA and POS films were optimized. Three degradation triggers -- direct activation by photoacid generation, thermal activation, and mechanical rupture of acid-filled microcapsules -- were investigated.
- Physical Chemistry
- Polymer Chemistry
- Containers and Packaging