Development of hybrid antibacterial membrane by incorporating silver particle with 2,4,6-triaminopyrimidine as compatibilizer

The objective of this study was to develop and characterize the polyethersulfone (PES) incorporated with silver (Ag) as an antibacterial membrane which can remove and disinfect bacteria in a single step for environmental application. The PES-Ag membrane was developed from PES, silver nitrate a...

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Main Author:	Basri, Hatijah
Format:	Thesis
Language:	English
Published:	2012
Subjects:	TP Chemical technology TP1080-1185 Polymers and polymer manufacture
Online Access:	http://eprints.uthm.edu.my/2538/1/24p%20HATIJAH%20BASRI.pdf
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spelling	my-uthm-ep.25382021-11-01T02:34:32Z Development of hybrid antibacterial membrane by incorporating silver particle with 2,4,6-triaminopyrimidine as compatibilizer 2012-01 Basri, Hatijah TP Chemical technology TP1080-1185 Polymers and polymer manufacture The objective of this study was to develop and characterize the polyethersulfone (PES) incorporated with silver (Ag) as an antibacterial membrane which can remove and disinfect bacteria in a single step for environmental application. The PES-Ag membrane was developed from PES, silver nitrate as an antibacterial agent and 2,4,6-triaminopyrimidine (TAP) as compatibilizer. The influence of AgNO3 loading, molecular weights (MW) of polyvinylpyrrolidone (PVP) as dispersant and type of compatibilizer have been investigated. The resulting membranes were characterized based on their thermal, tensile and structural properties which were used in correlation with the membrane antibacterial properties. The incorporation of Ag in PES membrane has increased the tensile strength doubled as compared to the unmodified PES. Furthermore, it was observed that the highest AgNO3 loading (2 wt%) and the highest MW (360,000) of PVP as dispersant has led to higher silver content on membrane surfaces. This is evidenced from energy dispersive X-ray (EDX) analysis and X-ray photoelectron spectroscopy (XPS). These properties have induced a better antibacterial activity in a disc-diffusion test against Escherichia coli (E.coli) and Staphylococcus aureus (S.aureus). The structural characterization by field emission scanning electron microscope (FESEM) revealed that by incorporating TAP as compatibilizer, smaller Ag particles size with improved distribution and average pore size of 0.174 µm was obtained. In addition, the silver residue during fabrication monitored by inductive coupled plasma-mass spectrometry (ICP-MS) was significantly reduced (62.6%). These parameters have led to E.coli removal of log reduction value (LRV) 3.59 and 100% growth inhibition tested on E.coli suspension of 1×106 colony forming unit (CFU/mL). From the adhesion test, this membrane exhibited the least E.coli adherence which in turn evidenced its anti�adhesion property. In conclusion, the PES-Ag membrane with TAP as compatibilizer produced was potential in bacteria removal and disinfection below the CFU maximum range for water and waste water treatment. 2012-01 Thesis http://eprints.uthm.edu.my/2538/ http://eprints.uthm.edu.my/2538/1/24p%20HATIJAH%20BASRI.pdf text en public phd doctoral Universiti Teknologi Malaysia Fakulti Kejuruteraan Kimia
institution	Universiti Tun Hussein Onn Malaysia
collection	UTHM Institutional Repository
language	English
topic	TP Chemical technology TP1080-1185 Polymers and polymer manufacture
spellingShingle	TP Chemical technology TP1080-1185 Polymers and polymer manufacture Basri, Hatijah Development of hybrid antibacterial membrane by incorporating silver particle with 2,4,6-triaminopyrimidine as compatibilizer
description	The objective of this study was to develop and characterize the polyethersulfone (PES) incorporated with silver (Ag) as an antibacterial membrane which can remove and disinfect bacteria in a single step for environmental application. The PES-Ag membrane was developed from PES, silver nitrate as an antibacterial agent and 2,4,6-triaminopyrimidine (TAP) as compatibilizer. The influence of AgNO3 loading, molecular weights (MW) of polyvinylpyrrolidone (PVP) as dispersant and type of compatibilizer have been investigated. The resulting membranes were characterized based on their thermal, tensile and structural properties which were used in correlation with the membrane antibacterial properties. The incorporation of Ag in PES membrane has increased the tensile strength doubled as compared to the unmodified PES. Furthermore, it was observed that the highest AgNO3 loading (2 wt%) and the highest MW (360,000) of PVP as dispersant has led to higher silver content on membrane surfaces. This is evidenced from energy dispersive X-ray (EDX) analysis and X-ray photoelectron spectroscopy (XPS). These properties have induced a better antibacterial activity in a disc-diffusion test against Escherichia coli (E.coli) and Staphylococcus aureus (S.aureus). The structural characterization by field emission scanning electron microscope (FESEM) revealed that by incorporating TAP as compatibilizer, smaller Ag particles size with improved distribution and average pore size of 0.174 µm was obtained. In addition, the silver residue during fabrication monitored by inductive coupled plasma-mass spectrometry (ICP-MS) was significantly reduced (62.6%). These parameters have led to E.coli removal of log reduction value (LRV) 3.59 and 100% growth inhibition tested on E.coli suspension of 1×106 colony forming unit (CFU/mL). From the adhesion test, this membrane exhibited the least E.coli adherence which in turn evidenced its anti�adhesion property. In conclusion, the PES-Ag membrane with TAP as compatibilizer produced was potential in bacteria removal and disinfection below the CFU maximum range for water and waste water treatment.
format	Thesis
qualification_name	Doctor of Philosophy (PhD.)
qualification_level	Doctorate
author	Basri, Hatijah
author_facet	Basri, Hatijah
author_sort	Basri, Hatijah
title	Development of hybrid antibacterial membrane by incorporating silver particle with 2,4,6-triaminopyrimidine as compatibilizer
title_short	Development of hybrid antibacterial membrane by incorporating silver particle with 2,4,6-triaminopyrimidine as compatibilizer
title_full	Development of hybrid antibacterial membrane by incorporating silver particle with 2,4,6-triaminopyrimidine as compatibilizer
title_fullStr	Development of hybrid antibacterial membrane by incorporating silver particle with 2,4,6-triaminopyrimidine as compatibilizer
title_full_unstemmed	Development of hybrid antibacterial membrane by incorporating silver particle with 2,4,6-triaminopyrimidine as compatibilizer
title_sort	development of hybrid antibacterial membrane by incorporating silver particle with 2,4,6-triaminopyrimidine as compatibilizer
granting_institution	Universiti Teknologi Malaysia
granting_department	Fakulti Kejuruteraan Kimia
publishDate	2012
url	http://eprints.uthm.edu.my/2538/1/24p%20HATIJAH%20BASRI.pdf
_version_	1747830963911524352

Development of hybrid antibacterial membrane by incorporating silver particle with 2,4,6-triaminopyrimidine as compatibilizer

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