Accelerated Thermal Depolymerization of Cyclic Polyphthalaldehyde with a Polymeric Thermoacid Generator

作者：Hernandez Hector Lopez; Lee Olivia P; Casey Catherine M Possanza; Kaitz Joshua A; Park Chan Woo; Plantz Christopher L; Moore Jeffrey S^*; White Scott R^*

来源：Macromolecular Rapid Communications, 2018, 39(11): 1800046.

DOI：10.1002/marc.201800046

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

Thermally triggerable polymer films that degrade at modest temperatures (approximate to 85 degrees 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 degrees 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.

• 出版日期2018-6