High dehumidification performance of amorphous cellulose composite membranes prepared from trimethylsilyl cellulose
| Autor: | Tiara Puspasari, Wojciech Ogieglo, Ohoud Alharbi, Klaus-Viktor Peinemann, Faheem Hassan Akhtar |
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| Rok vydání: | 2018 |
| Předmět: |
Materials science
Trimethylsilyl Renewable Energy Sustainability and the Environment Regenerated cellulose 02 engineering and technology General Chemistry Permeation 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences Environmentally friendly 0104 chemical sciences Amorphous solid chemistry.chemical_compound Membrane chemistry Chemical engineering General Materials Science Cellulose 0210 nano-technology Selectivity |
| Zdroj: | Journal of Materials Chemistry A. 6:9271-9279 |
| ISSN: | 2050-7496 2050-7488 |
| DOI: | 10.1039/c8ta00350e |
| Popis: | Cellulose is widely regarded as an environmentally friendly, natural and low cost material which can significantly contribute to the sustainable economic growth. In this study, cellulose composite membranes were prepared via regeneration of trimethylsilyl cellulose (TMSC), an easily synthesized cellulose derivative. The amorphous hydrophilic feature of the regenerated cellulose enabled fast permeation of water vapour. The pore-free cellulose layer thickness was adjustable by the initial TMSC concentration and acted as an efficient gas barrier. As a result, a 5000 GPU water vapour transmission rate (WVTR) at the highest ideal selectivity of 1.1 × 106 was achieved by the membranes spin coated from a 7% (w/w) TMSC solution. The membranes maintained a 4000 GPU WVTR with a selectivity of 1.1 × 104 in mixed-gas experiments, surpassing the performances of previously reported composite membranes. This study provides a simple way to not only produce high performance membranes but also advance cellulose as a low-cost and sustainable membrane material for dehumidification applications. |
| Databáze: | OpenAIRE |
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