Accelerated Thermal Depolymerization of Cyclic Polyphthalaldehyde with a Polymeric Thermoacid Generator

Hector Lopez Hernandez, Olivia P. Lee, Catherine Possanza, Joshua A. Kaitz, Chan Woo Park, Christopher L. Plantz, Jeffrey S. Moore, Scott R. White

Research output: Contribution to journalArticlepeer-review


Thermally triggerable polymer films that degrade at modest temperatures (≈85 °C) are created from a blend of cyclic polyphthalaldehyde (cPPA) and a polymeric thermoacid generator, poly(vinyl tert-butyl carbonate sulfone) (PVtBCS). PVtBCS depolymerizes when heated, generating acid which initiates the depolymerization of cPPA into volatile byproducts. The mass loss onset for 2 wt% PVtBCS/cPPA is 22 °C lower than the onset for neat cPPA alone in dynamic thermogravimetric analysis experiments. Increased concentrations of PVtBCS increase the rate of depolymerization of cPPA. Raman spectroscopy reveals that the monomer, o-phthalaldehyde, is the main depolymerization product of the acid-catalyzed depolymerization of cPPA. The PVtBCS/cPPA blend is a promising material for the design and manufacture of transient electronic packaging and polymers.

Original languageEnglish (US)
Article number1800046
JournalMacromolecular Rapid Communications
Issue number11
StatePublished - Jun 2018


  • ceiling temperature
  • metastable polymers
  • polyphthalaldehyde
  • transient electronics
  • triggered depolymerization

ASJC Scopus subject areas

  • Materials Chemistry
  • Polymers and Plastics
  • Organic Chemistry


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