Publication: The properties of silylated polyvinyl alcohol based foams reinforced by microfibrillated cellulose (MFC)
dc.contributor.affiliation | #PLACEHOLDER_PARENT_METADATA_VALUE# | en_US |
dc.contributor.author | Sharifah Shahira binti Syed Putra | en_US |
dc.date.accessioned | 2024-10-08T03:17:14Z | |
dc.date.available | 2024-10-08T03:17:14Z | |
dc.date.issued | 2019 | |
dc.description.abstract | In this study, polyvinyl alcohol (PVA) composite foam reinforced with microfibrillated cellulose (MFC) was prepared using freeze-drying process. The MFC from sugarcane bagasse (SCB) was extracted via chemical treatment assisted with ultrasonication. However, a noteworthy problem of incorporating MFC-SCB into PVA foam is that their low melting point, lacks fine interfacial adhesion and high moisture absorption. Therefore, in this study, the PVA-MFC foam was chemically silylated with Ƴ- methacryloxypropyltrimethoxysilane (MPS) and tetraethoxysilane (TEOS) to overcome the weakness of incorporating MFC-SCB into PVA foam. It was found that PVA-MFC foam with PVA molecular weight of 50 kDa, concentration of MFC-SCB suspension 2 w/v % and 20 w/v % concentration of PVA resulted the highest porosity (68 %) and lowest density (0.48 g cm-1). This PVA-MFC foam denoted as 2,20PVA-MFC. Preferred silanization parameter of 2,20PVA-MFC foam was found at 10 wt % of silane concentration and two hours of reaction time. The wetting ability and mechanical strength of the silylated 2,20PVA-MFC foam was greatly enhanced compared with unmodified 2,20PVA-MFC foam. The silane chemicals (MPS and TEOS) had been confirmed grafted on 2,20PVA-MFC foam due to presence of Si-C and Si-O-C stretching vibration in fourier transform infrared (FTIR) spectra and cloud-like coating of porous pore was observed in scanning electron microscopy (SEM) micrographs. In addition, the silylated 2,20PVA-MFC foam (MPS and TEOS) exhibit a series of desirable properties such as lower swelling ratio and high absorption capacity of solvents and oils. The characterization of 2,20PVA-MFC foam using TEOS was further investigated by field emission scanning electron microscopy (FESEM), X-ray photoelectron spectrometer (XPS) analysis and Brunauer-Emmett-Teller (BET) specific surface area. A significant morphological difference between the unmodified and silylated 2,20PVA-MFC-TEOS foam was clearly observed through FESEM micrographs. Despite that, the XPS and BET analysis also exhibit Si 2p spectrum and low specific surface area on the silylated 2,20PVA-MFC-TEOS foam, respectively. This versatile silylated 2,20PVA-MFC foam could therefore be a promising option as a novel adsorption material for solvent and oil removal in the treatment of polluted water. | en_US |
dc.description.degreelevel | Master | en_US |
dc.description.identifier | Thesis : The properties of silylated polyvinyl alcohol based foams reinforced by microfibrillated cellulose (MFC) /by Sharifah Shahira binti Syed Putra | en_US |
dc.description.identity | t11100409561SharifahShahirabintiSyedPutra | en_US |
dc.description.kulliyah | Kulliyyah of Engineering | en_US |
dc.description.notes | Thesis (MSBTE)--International Islamic University Malaysia, 2019. | en_US |
dc.description.physicaldescription | xvi, 125 leaves : illustrations ; 30cm. | en_US |
dc.description.programme | Master of Science (Biotechnology Engineering) | en_US |
dc.identifier.uri | https://studentrepo.iium.edu.my/handle/123456789/7022 | |
dc.identifier.url | https://lib.iium.edu.my/mom/services/mom/document/getFile/gTpDAcpO4d9jLtfw5waNdW0yzrGwEaOh20200715143757747 | |
dc.language.iso | en | en_US |
dc.publisher | Kuala Lumpur : Kulliyah of Engineering, International Islamic University Malaysia, 2019 | en_US |
dc.rights | Copyright International Islamic University Malaysia | |
dc.title | The properties of silylated polyvinyl alcohol based foams reinforced by microfibrillated cellulose (MFC) | en_US |
dc.type | Master Thesis | en_US |
dspace.entity.type | Publication |
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