Polysulfone mixed matrix membranes with biosynthesis nanoparticles: enhancement of interface compatibility and antibacterial membrane seperation process
This study investigates the effect of biosynthesis silver nanoparticles (bio-AgNPs) structure towards PSf membranes performance. The addition of bio-AgNPs in the membrane formulation was aimed to improve antibacterial properties and interface compatibility of the polymer mixed matric membrane....
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| Format: | Thesis |
| Language: | English English English |
| Published: |
2020
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| Online Access: | http://eprints.uthm.edu.my/906/ http://eprints.uthm.edu.my/906/1/24p%20KHAIRUL%20NAZRI%20YUSOF.pdf http://eprints.uthm.edu.my/906/2/KHAIRUL%20NAZRI%20YUSOF%20COPYRIGHT%20DECLARATION.pdf http://eprints.uthm.edu.my/906/3/KHAIRUL%20NAZRI%20YUSOF%20WATERMARK.pdf |
| _version_ | 1848887327114395648 |
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| author | Yusof, Khairul Nazri |
| author_facet | Yusof, Khairul Nazri |
| author_sort | Yusof, Khairul Nazri |
| building | UTHM Institutional Repository |
| collection | Online Access |
| description | This study investigates the effect of biosynthesis silver nanoparticles (bio-AgNPs)
structure towards PSf membranes performance. The addition of bio-AgNPs in the
membrane formulation was aimed to improve antibacterial properties and interface
compatibility of the polymer mixed matric membrane. In this work, facile green
synthesis method of silver nanoparticles was prepared using Parkia speciosa (Petai)
leaves extract silver nitrate aqueous solution. The bio-AgNPs/PSf membranes was
fabricated using phase-inversion process. Characterization of the synthesized bio�AgNPs and mixed matrix membranes via UV-Vis spectroscopy (UV-Vis), Field
emission scanning electron microscope (FESEM), Transmission electron microscopy
(TEM), X-ray diffraction (XRD), and Fourier transform infrared spectroscopy
(FTIR). Surface plasmon resonance for bio-AgNPs was assigned at 465 nm with
brown colour. FTIR spectroscopy identified the biomolecules capped on the surface
of nanoparticles are phenol, flavonoid and terpenoid compounds. The microstructure
and structural analyses had shown that AgNPs possessed good characteristics with
spherical shapes, small average size of particles (59.96 nm), and small crystallite
size. The bio-AgNPs also showed significant potential antibacterial activity against
Escherichia coli (E. coli) and Staphylococcus aureus (S. aureus). The addition of
bio-AgNPs was able to enhance the hydrophilicity of composite PSf membranes
which proved by decreasing the value of contact angle. Meanwhile, structure on
bottom layer shown a porous bulk with finger-like structure and macroviod structure
which is responsible for mechanical support. Finger-like structure on top layer
became smaller with increment of bio-AgNPs because of its hydrophilicity
properties. Hence, the pure water flux also will increase because the hydrophilicity
properties was an essential factor for water permeability. The molecular interaction
between molecules was investigated using Dynamic mechanical analysis (DMA) and
silver leaching analysis by Inductive coupled plasma mass spectrometer (ICP-MS). vi
As revealed, the strength of molecular interaction between AgNPs and PSf molecules
was improved with addition of bio-AgNPs. Hence, overall the results showed that the
incorporation of bio-AgNPs able to improve antibacterial properties and interface
compatibility of the polymer mixed matric membrane |
| first_indexed | 2025-11-15T19:52:37Z |
| format | Thesis |
| id | uthm-906 |
| institution | Universiti Tun Hussein Onn Malaysia |
| institution_category | Local University |
| language | English English English |
| last_indexed | 2025-11-15T19:52:37Z |
| publishDate | 2020 |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | uthm-9062021-09-09T02:30:44Z http://eprints.uthm.edu.my/906/ Polysulfone mixed matrix membranes with biosynthesis nanoparticles: enhancement of interface compatibility and antibacterial membrane seperation process Yusof, Khairul Nazri TP248.13-248.65 Biotechnology This study investigates the effect of biosynthesis silver nanoparticles (bio-AgNPs) structure towards PSf membranes performance. The addition of bio-AgNPs in the membrane formulation was aimed to improve antibacterial properties and interface compatibility of the polymer mixed matric membrane. In this work, facile green synthesis method of silver nanoparticles was prepared using Parkia speciosa (Petai) leaves extract silver nitrate aqueous solution. The bio-AgNPs/PSf membranes was fabricated using phase-inversion process. Characterization of the synthesized bio�AgNPs and mixed matrix membranes via UV-Vis spectroscopy (UV-Vis), Field emission scanning electron microscope (FESEM), Transmission electron microscopy (TEM), X-ray diffraction (XRD), and Fourier transform infrared spectroscopy (FTIR). Surface plasmon resonance for bio-AgNPs was assigned at 465 nm with brown colour. FTIR spectroscopy identified the biomolecules capped on the surface of nanoparticles are phenol, flavonoid and terpenoid compounds. The microstructure and structural analyses had shown that AgNPs possessed good characteristics with spherical shapes, small average size of particles (59.96 nm), and small crystallite size. The bio-AgNPs also showed significant potential antibacterial activity against Escherichia coli (E. coli) and Staphylococcus aureus (S. aureus). The addition of bio-AgNPs was able to enhance the hydrophilicity of composite PSf membranes which proved by decreasing the value of contact angle. Meanwhile, structure on bottom layer shown a porous bulk with finger-like structure and macroviod structure which is responsible for mechanical support. Finger-like structure on top layer became smaller with increment of bio-AgNPs because of its hydrophilicity properties. Hence, the pure water flux also will increase because the hydrophilicity properties was an essential factor for water permeability. The molecular interaction between molecules was investigated using Dynamic mechanical analysis (DMA) and silver leaching analysis by Inductive coupled plasma mass spectrometer (ICP-MS). vi As revealed, the strength of molecular interaction between AgNPs and PSf molecules was improved with addition of bio-AgNPs. Hence, overall the results showed that the incorporation of bio-AgNPs able to improve antibacterial properties and interface compatibility of the polymer mixed matric membrane 2020-08 Thesis NonPeerReviewed text en http://eprints.uthm.edu.my/906/1/24p%20KHAIRUL%20NAZRI%20YUSOF.pdf text en http://eprints.uthm.edu.my/906/2/KHAIRUL%20NAZRI%20YUSOF%20COPYRIGHT%20DECLARATION.pdf text en http://eprints.uthm.edu.my/906/3/KHAIRUL%20NAZRI%20YUSOF%20WATERMARK.pdf Yusof, Khairul Nazri (2020) Polysulfone mixed matrix membranes with biosynthesis nanoparticles: enhancement of interface compatibility and antibacterial membrane seperation process. Doctoral thesis, Universiti Tun Hussein Onn Malaysia. |
| spellingShingle | TP248.13-248.65 Biotechnology Yusof, Khairul Nazri Polysulfone mixed matrix membranes with biosynthesis nanoparticles: enhancement of interface compatibility and antibacterial membrane seperation process |
| title | Polysulfone mixed matrix membranes with biosynthesis nanoparticles: enhancement of interface compatibility and antibacterial membrane seperation process |
| title_full | Polysulfone mixed matrix membranes with biosynthesis nanoparticles: enhancement of interface compatibility and antibacterial membrane seperation process |
| title_fullStr | Polysulfone mixed matrix membranes with biosynthesis nanoparticles: enhancement of interface compatibility and antibacterial membrane seperation process |
| title_full_unstemmed | Polysulfone mixed matrix membranes with biosynthesis nanoparticles: enhancement of interface compatibility and antibacterial membrane seperation process |
| title_short | Polysulfone mixed matrix membranes with biosynthesis nanoparticles: enhancement of interface compatibility and antibacterial membrane seperation process |
| title_sort | polysulfone mixed matrix membranes with biosynthesis nanoparticles: enhancement of interface compatibility and antibacterial membrane seperation process |
| topic | TP248.13-248.65 Biotechnology |
| url | http://eprints.uthm.edu.my/906/ http://eprints.uthm.edu.my/906/1/24p%20KHAIRUL%20NAZRI%20YUSOF.pdf http://eprints.uthm.edu.my/906/2/KHAIRUL%20NAZRI%20YUSOF%20COPYRIGHT%20DECLARATION.pdf http://eprints.uthm.edu.my/906/3/KHAIRUL%20NAZRI%20YUSOF%20WATERMARK.pdf |