Hatijah Basri - Academia.edu (original) (raw)
Papers by Hatijah Basri
Advanced Materials Research, 2012
In this work, polysulfone ultrafiltration membranes were prepared via simple phase inversion with... more In this work, polysulfone ultrafiltration membranes were prepared via simple phase inversion with distilled water as non-solvent additive. The main reason for the addition of water in polysulfone dope solution preparation was to enhance the membranes structure. In the dope, 15 wt. % of polysulfone was used and water was varied up to 6 wt. %. The effects of water on morphology, porosity and tensile properties were investigated in detail. From the porosity test, results showed that the addition of water has improved membrane porosity up to 53 %. The FESEM images revealed that membrane morphology has also been modified. However, the tensile properties of membrane decreased as water content increased which may be due to the porosity interaction between polysulfone/NMP with water.
Jurnal Teknologi, 2014
The effects of two types of additives rice husk silica (RHS) towards membrane hydrophilicity and ... more The effects of two types of additives rice husk silica (RHS) towards membrane hydrophilicity and flux performance were investigated. Different percentages or concentrations of rice husk silica (RHS) additive were used to form a mixed matrix membrane. This flat sheet mixed matrix membrane was prepared via phase inversion technique. The fabricated membrane was characterized by contact angle and surface roughness measurements, whereas the flux permeation was measured using pure water flux. The result demonstrated that the addition both types of rice husk silica have increased the hydrophilicity properties of the mixed matrix membrane. Stronger effect of hydrophilicity is shown upon addition of amorphous rice husk particle where both contact angle and surface roughness were reduced and increased, respectively.
Jurnal Teknologi, 2013
In the present work, the effect of rice husk silica (RHS) on the performance of polysulfone (PSf)... more In the present work, the effect of rice husk silica (RHS) on the performance of polysulfone (PSf) blended with polyethylene glycol (PEG) membranes were investigated. The hybrid ultrafiltration membranes were prepared by phase inversion technique. The membrane performance was analyzed by using pure water flux, humic acid for the rejection test and followed by the membrane characterization. Results showed that PEG increased membrane pure water flux to 621.212 LMH and rejection humic acid at and 98%. The analysis of SEM revealed that PEG obviously changed the microstructure of the membrane especially at the top and sub layer.
Desalination, 2012
A novel antibacterial and anti-adhesion membrane was obtained by blending PES with 2,4,6-triamino... more A novel antibacterial and anti-adhesion membrane was obtained by blending PES with 2,4,6-triaminopyrimidine (TAP) as compatibilizer and AgNO 3 as an antibacterial agent. The modified membrane surfaces analyzed by XPS revealed high content of silver (Ag) compared to PES/Ag without compatibilizer. This result was supported by AFM micrographs where PES/TAP/Ag exhibited smoother surface with RMS(nm) 17.49 and R a (nm) 11.74. From the biofouling point of view, the smoother the surface, the lesser contact area provided thus reducing bacterial adhesion. In addition, PES/TAP/Ag membrane prepared via simple phase inversion technique showed evidence of an anti-adhesion property when tested on Escherichia coli suspension of 1 × 10 4 cells/mL at 37°C. The smooth, anti-adhered surface of PES/TAP/Ag however exhibits better tensile strength up to 52% compared to pristine PES membrane, making it an antibacterial membrane with reduced biofouling potentials in water and waste water treatment.
Desalination, 2010
Silver-filled asymmetric polyethersulfone (PES) membranes were prepared by a simple phase inversi... more Silver-filled asymmetric polyethersulfone (PES) membranes were prepared by a simple phase inversion technique. The effects of polyvinylpyrrolidone (PVP) and 2, 4, 6-triaminopyrimidine (TAP) on the surface properties of the silver-filled asymmetric membrane were investigated for antibacterialapplication. The dispersion of silver nanoparticles (Ag) and silver content on membrane surface were characterized using field emission scanning electron microscope (FESEM) and energy dispersive spectrometer (EDS), respectively. Results showed that smaller silver particles were formed in PES membranes when PVP and TAP were added during dope preparation. Using inductively coupled plasma mass spectrometry (ICP-MS), it is found that silver leaching has been significantly reduced up to 57% and 63% upon the addition of PVP and TAP respectively. The improved silverdispersion on membrane surfaces was able to enhance the antibacterial activity against Escherichia coli (E. coli) and Staphylococcus aureus (S. aureus) as evidenced by larger inhibition ring in agar diffusion method. The filtration of E. coli suspension (optical density = 0.31 at ? = 600 nm) carried out on prepared membranes proved that PES-AgNO3 with TAP as dispersant appeared to inhibit almost 100% bacterial growth in rich medium. Hence, overall results showed the potential of PES-AgNO3 with TAP to be used for antibacterialapplications especially in water treatment.
Desalination, 2014
M-1 Proces, A d v m r c e d M k ond Man-Cmtec Univerda' Tun Hlmein Onn MolaysirS Rui! Raja, Bofu ... more M-1 Proces, A d v m r c e d M k ond Man-Cmtec Univerda' Tun Hlmein Onn MolaysirS Rui! Raja, Bofu PohotB6400,Johor. W s i a ' D e~~e c h n o l o g v ond Hen'kw. Frmlly ofsaence.
Organic-inorganic composite materials have attracted great attention because of their potential t... more Organic-inorganic composite materials have attracted great attention because of their potential to combine the features of organic materials with those of inorganic materials. Particularly organic-metal composite such as polymer-silver are promising functional materials in areas ranging from electronic and optical devices to biosensing, antimicrobial agents and catalysis. . .
Silver‐loading asymmetric polyethersulfone (PES) asymmetric membrane was prepared via the simple ... more Silver‐loading asymmetric polyethersulfone (PES) asymmetric membrane was prepared via the simple phase inversion technique. The homogeneous solution was prepared by dissolving and PES in N‐Methyl‐2‐pyrrolidone (NMP) or N,N‐dimethylformamide (DMF). The ...
Advanced Materials Research, 2012
In this work, polysulfone ultrafiltration membranes were prepared via simple phase inversion with... more In this work, polysulfone ultrafiltration membranes were prepared via simple phase inversion with distilled water as non-solvent additive. The main reason for the addition of water in polysulfone dope solution preparation was to enhance the membranes structure. In the dope, 15 wt. % of polysulfone was used and water was varied up to 6 wt. %. The effects of water on morphology, porosity and tensile properties were investigated in detail. From the porosity test, results showed that the addition of water has improved membrane porosity up to 53 %. The FESEM images revealed that membrane morphology has also been modified. However, the tensile properties of membrane decreased as water content increased which may be due to the porosity interaction between polysulfone/NMP with water.
Jurnal Teknologi, 2014
The effects of two types of additives rice husk silica (RHS) towards membrane hydrophilicity and ... more The effects of two types of additives rice husk silica (RHS) towards membrane hydrophilicity and flux performance were investigated. Different percentages or concentrations of rice husk silica (RHS) additive were used to form a mixed matrix membrane. This flat sheet mixed matrix membrane was prepared via phase inversion technique. The fabricated membrane was characterized by contact angle and surface roughness measurements, whereas the flux permeation was measured using pure water flux. The result demonstrated that the addition both types of rice husk silica have increased the hydrophilicity properties of the mixed matrix membrane. Stronger effect of hydrophilicity is shown upon addition of amorphous rice husk particle where both contact angle and surface roughness were reduced and increased, respectively.
Jurnal Teknologi, 2013
In the present work, the effect of rice husk silica (RHS) on the performance of polysulfone (PSf)... more In the present work, the effect of rice husk silica (RHS) on the performance of polysulfone (PSf) blended with polyethylene glycol (PEG) membranes were investigated. The hybrid ultrafiltration membranes were prepared by phase inversion technique. The membrane performance was analyzed by using pure water flux, humic acid for the rejection test and followed by the membrane characterization. Results showed that PEG increased membrane pure water flux to 621.212 LMH and rejection humic acid at and 98%. The analysis of SEM revealed that PEG obviously changed the microstructure of the membrane especially at the top and sub layer.
Desalination, 2012
A novel antibacterial and anti-adhesion membrane was obtained by blending PES with 2,4,6-triamino... more A novel antibacterial and anti-adhesion membrane was obtained by blending PES with 2,4,6-triaminopyrimidine (TAP) as compatibilizer and AgNO 3 as an antibacterial agent. The modified membrane surfaces analyzed by XPS revealed high content of silver (Ag) compared to PES/Ag without compatibilizer. This result was supported by AFM micrographs where PES/TAP/Ag exhibited smoother surface with RMS(nm) 17.49 and R a (nm) 11.74. From the biofouling point of view, the smoother the surface, the lesser contact area provided thus reducing bacterial adhesion. In addition, PES/TAP/Ag membrane prepared via simple phase inversion technique showed evidence of an anti-adhesion property when tested on Escherichia coli suspension of 1 × 10 4 cells/mL at 37°C. The smooth, anti-adhered surface of PES/TAP/Ag however exhibits better tensile strength up to 52% compared to pristine PES membrane, making it an antibacterial membrane with reduced biofouling potentials in water and waste water treatment.
Desalination, 2010
Silver-filled asymmetric polyethersulfone (PES) membranes were prepared by a simple phase inversi... more Silver-filled asymmetric polyethersulfone (PES) membranes were prepared by a simple phase inversion technique. The effects of polyvinylpyrrolidone (PVP) and 2, 4, 6-triaminopyrimidine (TAP) on the surface properties of the silver-filled asymmetric membrane were investigated for antibacterialapplication. The dispersion of silver nanoparticles (Ag) and silver content on membrane surface were characterized using field emission scanning electron microscope (FESEM) and energy dispersive spectrometer (EDS), respectively. Results showed that smaller silver particles were formed in PES membranes when PVP and TAP were added during dope preparation. Using inductively coupled plasma mass spectrometry (ICP-MS), it is found that silver leaching has been significantly reduced up to 57% and 63% upon the addition of PVP and TAP respectively. The improved silverdispersion on membrane surfaces was able to enhance the antibacterial activity against Escherichia coli (E. coli) and Staphylococcus aureus (S. aureus) as evidenced by larger inhibition ring in agar diffusion method. The filtration of E. coli suspension (optical density = 0.31 at ? = 600 nm) carried out on prepared membranes proved that PES-AgNO3 with TAP as dispersant appeared to inhibit almost 100% bacterial growth in rich medium. Hence, overall results showed the potential of PES-AgNO3 with TAP to be used for antibacterialapplications especially in water treatment.
Desalination, 2014
M-1 Proces, A d v m r c e d M k ond Man-Cmtec Univerda' Tun Hlmein Onn MolaysirS Rui! Raja, Bofu ... more M-1 Proces, A d v m r c e d M k ond Man-Cmtec Univerda' Tun Hlmein Onn MolaysirS Rui! Raja, Bofu PohotB6400,Johor. W s i a ' D e~~e c h n o l o g v ond Hen'kw. Frmlly ofsaence.
Organic-inorganic composite materials have attracted great attention because of their potential t... more Organic-inorganic composite materials have attracted great attention because of their potential to combine the features of organic materials with those of inorganic materials. Particularly organic-metal composite such as polymer-silver are promising functional materials in areas ranging from electronic and optical devices to biosensing, antimicrobial agents and catalysis. . .
Silver‐loading asymmetric polyethersulfone (PES) asymmetric membrane was prepared via the simple ... more Silver‐loading asymmetric polyethersulfone (PES) asymmetric membrane was prepared via the simple phase inversion technique. The homogeneous solution was prepared by dissolving and PES in N‐Methyl‐2‐pyrrolidone (NMP) or N,N‐dimethylformamide (DMF). The ...