Competing hydrogen bonding produces mesoporous/macroporous carbons templated by a high-molecular-weight poly(caprolactone–b–ethylene oxide–b–caprolactone) triblock copolymer
| Autor: | Mahmoud Mm Ahmed, Shiao-Wei Kuo, Wei-Shih Hung, Mohamed Gamal Mohamed |
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| Rok vydání: | 2020 |
| Předmět: |
Materials science
Polymers and Plastics Ethylene oxide Organic Chemistry 02 engineering and technology 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences Micelle 0104 chemical sciences chemistry.chemical_compound Chemical engineering chemistry Polymerization Materials Chemistry Copolymer Fourier transform infrared spectroscopy 0210 nano-technology Bifunctional Mesoporous material Caprolactone |
| Zdroj: | Journal of Polymer Research. 27 |
| ISSN: | 1572-8935 1022-9760 |
| Popis: | In this study we developed a simple strategy to synthesize macro- and mesoporous carbons by using a high-molecular-weight triblock copolymer, PCL440-b-PEO454-b-PCL440 (CEC), as a single template, itself prepared through simple ring-opening polymerization from a commercial homopolymer (HO-PEO454-OH) as the bifunctional macroinitiator and a resol-type phenolic resin as the carbon source. We employed differential scanning calorimetry, Fourier transform infrared (FTIR) spectroscopy, and small-angle X-ray scattering to investigate the thermal behavior, hydrogen bonding, and self-assembled nanostructures of the phenolic/CEC blends. We obtained macro- and mesoporous carbons possessing cylinder or spherical micelle structures with large pores (> 50 nm) and high surface areas (>400 m2 g−1), the result of most of the phenolic OH units preferring to interact (based on FTIR spectral analyses) with the PEO segment rather than the PCL segment. These macro/mesoporous carbons displayed reasonable CO2 uptake and energy storage behavior. |
| Databáze: | OpenAIRE |
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