Assessment of commercial poly(ε-caprolactone) as a renewable candidate for carbon capture and utilization
| Autor: | Angelo Meduri, Alfonso Policicchio, Cataldo Simari, Isabella Nicotera, Victor Lazzaroli, Raffaele Giuseppe Agostino, Sara Stelitano |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
chemistry.chemical_classification
Materials science Scanning electron microscope Process Chemistry and Technology Relaxation (NMR) Analytical chemistry Sorption 02 engineering and technology Polymer 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences 0104 chemical sciences chemistry.chemical_compound Adsorption chemistry Desorption Chemical Engineering (miscellaneous) 0210 nano-technology Pulsed field gradient Waste Management and Disposal Caprolactone |
| Zdroj: | Journal of CO2 Utilization. 19:185-193 |
| ISSN: | 2212-9820 |
| DOI: | 10.1016/j.jcou.2017.03.017 |
| Popis: | Poly(e-caprolactone) (PCL) is a cheap and sustainable polymer with long-term degradation (3–4 years) and low temperature transition ( T m = ∼60 °C). We report on the investigation of PCL as a valid green candidate for Carbon Capture and Utilization (CCU). Studies were carried out by two complementary tools: a Sievert-type volumetric apparatus, to thoroughly analyse the CO 2 adsorption/desorption process inside the polymer, and Nuclear Magnetic Resonance (NMR) spectroscopy for a deeper study of the molecular dynamics and confinement effects through 13 C – pulsed field gradient (PFG) method (self-diffusion measurements), relaxation times (T 1 ) and spectral analysis. The morphology of the solid-state PCL was also investigated by Scanning Electron Microscopy (SEM). The effects of both the physical state and the adsorption process conditions on the PCL's CO 2 sorption capabilities were investigated as well as those concerning the cyclic life and the regeneration process. We find that two kind of adsorption sites are present in PCL matrix. Furthermore, PCL show a remarkable and complete thermoreversibility of the CO 2 adsorption process, a key condition in view of possible applications in this field. |
| Databáze: | OpenAIRE |
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