Accelerated Thermal Depolymerization of Cyclic Polyphthalaldehyde with a Polymeric Thermoacid Generator
| Autor: | Jeffrey S. Moore, Catherine M. Possanza Casey, Chan Woo Park, Olivia P. Lee, Christopher L. Plantz, Hector Lopez Hernandez, Scott R. White, Joshua A. Kaitz |
|---|---|
| Rok vydání: | 2018 |
| Předmět: |
Thermogravimetric analysis
Polymers and Plastics Polymers 02 engineering and technology 010402 general chemistry Spectrum Analysis Raman 01 natural sciences Catalysis Sulfone chemistry.chemical_compound symbols.namesake Materials Chemistry chemistry.chemical_classification Depolymerization Organic Chemistry Temperature Water Polymer 021001 nanoscience & nanotechnology 0104 chemical sciences Ceiling temperature Monomer chemistry Chemical engineering Thermal depolymerization Thermogravimetry symbols 0210 nano-technology Raman spectroscopy Acids o-Phthalaldehyde |
| Zdroj: | Macromolecular rapid communications. 39(11) |
| ISSN: | 1521-3927 |
| Popis: | 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. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Plný text