Polyvinylidene fluoride -co- polytetrafluoroethylene (PVDF-co-PTFE) / deep eutectic solvent (DES) impregnated membrane for carbon dioxide separation
The main objective of this research is to develop an asymmetric polymeric flat sheet membrane functionalized with DES for CO2 separation. The PVDF-co-PTFE polymer was synthesized and used as a membrane support via non-solvent induced phase separation techniques. In order to accomplish the main objec...
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| Format: | Thesis Book |
| Language: | English |
| Published: |
Perlis, Malaysia
School of Bioprocess Engineering
2019
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| Summary: | The main objective of this research is to develop an asymmetric polymeric flat sheet membrane functionalized with DES for CO2 separation. The PVDF-co-PTFE polymer was synthesized and used as a membrane support via non-solvent induced phase separation techniques. In order to accomplish the main objective of the research, the following sub-objectives were drawn as follows; to study the effect of NIPS parameter on the membrane morphologies and porosity of PVDF-co-PTFE membrane. Two different parameters will be chosen; (i) different solvents (DMAc, NMP and DMF) and (ii) different polymer concentrations (20, 25 and 30 wt. %); to investigate the effect of membrane microstructure by addition of pore additives (PEG, LiCl) into the polymer solution and manipulating the coagulant bath medium (0, 25 and 50 wt. % ethanol with distilled water as non-solvent); to incorporate deep eutectic solvent loading in the PVDF-co-PTFE membrane support by altering membrane morphology structure; to study the effect on CO2 permeability and selectivity at different range of pressure difference and gas flow rate across the membrane. This scope of study focused on morphological studies, porosity and gas separation of supported-DES-membrane. The morphological studies of the cross-sectional area of PVDF-co-PTFE membrane support was carried out by using scanning electron microscope (SEM). In addition, the porosity of the membrane was determined by using the weight difference and density result from immersing the dry membrane in octanol for 2 minutes. Meanwhile, gas permeation test was used to evaluate the membrane performance. |
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| Physical Description: | xvii, 169 pages colour illustration 30 cm. |
| Bibliography: | Includes bibliographical references. |