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RISS 인기검색어
- 검색키워드
- 저자 : ( Haider Muhammad Salman ) (검색결과 12 건)
- 무료
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( Haider Muhammad Salman ),( Shao Godlisten Namwel ),( Nadir Abbas ),박성수,전순정,김희택 한국공업화학회 2014 한국공업화학회 연구논문 초록집 Vol.2014 No.1
In this study we have immobilized silver nanoparticles on polyether-sulfone (PES), Ag-PES was prepared by first nitration (NO<sub>2</sub>-PES), then amination (NH<sub>2</sub>-PES) and then reduction to replace amine with silver nanoparticles. The formation of NO<sub>2</sub>, NH<sub>2</sub> and AgNPs on PES was confirmed by FT-IR, Samples were further analyzed in XRD and SEM-EDAX. Antibacterial activity of the samples was carried out to investigate the disinfection performance of the samples on the Gram negative bacteria (Escherichia coli). Ag-PES showed better performance and controlled release of silver ions.
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( Haider Muhammad Salman ),김희택,( Shao Godlisten Namwel ),박성수,( Nadir Abbas ) 한국공업화학회 2015 한국공업화학회 연구논문 초록집 Vol.2015 No.0
A sequential repetitive chemical reduction technique to observe the growth of silver nanoparticles (AgNPs) attached to rGO, was performed on a single solution of graphene oxide (GO) and silver nitrate solution (7 runs, R1-R7) in order to manipulate the growth and size of the AgNPs. AgNPs with diameter varying from 4 nm in first run (R1) to 50 nm in seventh run (R7) can be obtained using this technique. Antibacterial activities of the samples were carried out on the Gram negative bacteria (E. coli). It was suggested that the sample obtained in the third run (R3) exhibited the highest antibacterial activity as compared to other samples, toward disinfection of bacteria due to its superior properties. This study provides a unique and novel application route to synthesize and control size of AgNPs embedded on graphene for various applications.
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( Haider Muhammad Salman ),김희택,( Syed Muhammad Imran Hassan ),( Manwar Hussain ),( Shao Godlisten Namwel ) 한국공업화학회 2015 한국공업화학회 연구논문 초록집 Vol.2015 No.1
Improving the life time of water treatment membranes can be achieved through exquisite control of the active disinfectant release. The Ppresent study demonstrates a comparison between PES-Gr-AgNPs, PES-CNT-AgNPs and aminenated PES-AgNPs composite polymer membrane for silver release to check the life time of water treatment membrane. Antibacterial activities of the samples were carried out to investigate the disinfection performance of the samples on the Gram negative bacteria (Escherichia coli). A predominant relation between Silver release and disinfection was accessed using the as-synthesized membranes. The physical-chemical properties of the samples were examined by XRD, SEM-EDAX, and HRTEM analyses.
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Unique pressure sensitive carbon nanotubes based polymer nanocomposites
( Syed Muhammad Imran Hassan ),( Shao Godlisten Namwel ),박성수,( Haider Muhammad Salman ),( Nadir Abbas ),전순정,( Manwar Hussain ) 한국공업화학회 2015 한국공업화학회 연구논문 초록집 Vol.2015 No.1
In this study we have synthesized unique flexible pressure sensitive nanocomposites prepared by solution mixing method by adding multi walled carbon nanotubes (MWCNT) in the thermoplastic urethane (TPU) along with poly(methyl methacrylate) (PMMA) beads of different sizes i.e. 5 μm, 10 μm and 20 μm. The electrical and thermal conductivities of the nanocomposites were studied under different applied pressures. Electrical response of the nanocomposites under different applied pressure demonstrated that these nanocomposites are suitable to be used as pressure sensing materials since they show repeatability in their electrical response when external pressure was applied on them repeatedly.
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( Syed Muhammad Imran Hassan ),김희택,박성수,전순정,( Haider Muhammad Salman ) 한국공업화학회 2015 한국공업화학회 연구논문 초록집 Vol.2015 No.0
This study introduces a systematic approach to disperse graphene oxide (GO) during emulsion polymerization of Polyaniline (PANI) to form nanocomposites with improved electrical conductivities. The polymerization process was carried out in the presence of a functionalized protonic acid such as dodecyl benzene sulfonic acid (DBSA), which acts both as an emulsifier and protonating agent. The microstructures of the PANI/GO nanocomposites were studied by SEM, TEM, X-Ray diffraction, UV-Vis spectrometry, Fourier transform infrared and Thermogravimetric analyses. Meanwhile, the electrical conductivities of the nanocomposite pellets pressed at different applied pressures were determined using the four probe analyzer. The addition of GO was essential component to improve the thermal stability and electrical conductivities of the PANI/GO nanocomposites. An enhanced conductivity of 474 S/m was observed at 5 wt. % GO loading and applied pressure of 6 tons.
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( Nadir Abbas ),박성수,( Shao Godlisten Namwel ),( Syed Muhammad Imran Hassan ),( Haider Muhammad Salman ),전순정,김희택 한국공업화학회 2015 한국공업화학회 연구논문 초록집 Vol.2015 No.1
Carbon materials are getting increasingly popular in catalysis of different kinds and types because of their remarkable properties. Addition of Graphite to well-known Titania photocatalyst may generate unique photochemical properties. For this reason we synthesize TiO<sub>2</sub>-Grpahite nano composite by a modified wet chemical method. We examined the effect of different ratios of Graphite addition on Titania. Synthesized product was characterized by SEM and TEM for morphological character and XRD for crystallographic studies. Photocatalytic tests of composite are conducted to validate its potential in removal of hazardous organic wastes. Optimum conditions for Graphite addition are investigated.
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Synthesis and electrical properties of PES-PANI-CNT nano composite conducting polymers
( Nadir Abbas ),( Shao Godlisten Namwel ),( Haider Muhammad Salman ),박성수,전순정,김희택 한국공업화학회 2014 한국공업화학회 연구논문 초록집 Vol.2014 No.1
A Ternary Conducting Polymer was prepared by solution blending Poly ethersulfone, Poly aniline (PANi) and Carbon nanotubes (CNT) in an organic solvent by varying ratio of CNT as 0.5%, 1%, 1.5%, 2% and 3% while keeping PANi 1% in all samples. Product was characterized by techniques including XRD, SEM, Mechanical strength testings and electrical conductivity measurements. It appeared that CNT is well dispersed in the nanocomposites resulting in desirable electrical and mechanical properties. Reinforced Polymer product further showed consecutiveness with varying degrees of carbon reinforcement, thus making it suitable for sensing applications.
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