Controlled degradation of disulfide-based epoxy thermosets for extreme environments
| Autor: | Ginger Denison Rothrock, Sarah D. Shepherd, Phillip Durham, Stephanie Lynn Swarner, Eric Ledet, Leah M. Johnson, Nicolas Daniel Huffman |
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| Rok vydání: | 2015 |
| Předmět: |
chemistry.chemical_classification
Diglycidyl ether Materials science Polymers and Plastics Organic Chemistry Thermosetting polymer Epoxy Polymer Smart material chemistry.chemical_compound Monomer Polymer degradation chemistry visual_art Materials Chemistry visual_art.visual_art_medium Organic chemistry Degradation (geology) |
| Zdroj: | Polymer. 64:84-92 |
| ISSN: | 0032-3861 |
| Popis: | The burgeoning field of smart materials for oil exploration and production (E&P) demands robust polymers that remain stable in extreme conditions, but readily respond to specific chemical cues. Here, disulfide-based epoxy polymers are designed to withstand harsh, simulated oil reservoir conditions while simultaneously retaining the ability to degrade from thiol compounds. Degradable epoxy thermosets are prepared by using Bisphenol-F diglycidyl ether (BFDGE) in combination with blends of p,p′-diaminodicyclohexylmethane (PACM) and 4-aminophenyl disulfide (4APDS). These polymer systems retain their mechanical properties after exposure to extreme conditions (e.g., two weeks, 69 MPa, 100 °C, pH 12), but degrade in the presence of 2-mercaptoethanol (2-ME). Parameters that influence polymer degradation are detailed including temperature, concentration of disulfide groups, and monomer stoichiometry. Formulations that entirely dissolve after exposure to 2-ME are utilized further for release of prototype tracers. Disulfide-based epoxy thermosets provide a unique platform for applications in harsh environments requiring robust materials capable of on-demand degradation. |
| Databáze: | OpenAIRE |
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