000			03366cam a2200337 a 4500
003			EG-GiCUC
005			20250223032702.0
008			210206s2020 ua dh f m 000 0 eng d
040			_aEG-GiCUC _beng _cEG-GiCUC
041	0		_aeng
049			_aDeposite
097			_aM.Sc
099			_aCai01.24.05.M.Sc.2020.Gh.E
100	0		_aGhada Mohammed Taher Elsawy
245	1	0	_aEvaluation the antimicrobial activity and physical properties of some polymeric fabrics treated with nanosilver prepared by photo-chemical techniques / _cGhada Mohammed Taher Elsawy ; Supervised Rehab Mohammed Amin , Eman Mohammed Ahmed Osman
246	1	5	_aتقييم النشاط البكتيرى والخواص الفيزيائية لبعض الأقمشة البوليمرية التى تم تحضيرها بجسيمات الفضة النانومترية باستخدام تقنيات الكيمياء الضوئية
260			_aCairo : _bGhada Mohammed Taher Elsawy , _c2020
300			_a181 P. : _bcharts , facimiles ; _c25cm
502			_aThesis (M.Sc.) - Cairo University - National Institute of Laser Enhanced Science (NILES) - Department of Laser Applications in Environmental Metrology Photochemistry and Photobiology and Agriculture
520			_aThe green synthesis of nanoparticles is evolving into an important branch of nanotechnology. Chemical and physical methods are more expensive, energy consuming and potentially toxic to the environment. In the current study, we prepared Ag NPs in an eco-friendly method using photochemical and thermal techniques. The developed nanoparticles were embedding into polymeric fabrics (cotton & polyester) with the aid of biomaterials like peptone as reducing agent and guar gum as a cross linker. The nano silver-treated fabrics were characterized by using Scanning Electron Microscope (SEM), X-Ray Diffraction (XRD) and Fourier Transform Infra-Red Spectroscopy (FTIR). Antimicrobial activity of the nano silver-treated fabrics was evaluated against both gram-negative and gram-positive bacteria. Moreover, durability, Mechanical properties, Ultraviolet protection factors (UPF) and air permeability of the treated fabrics were evaluated. Our results showed that Ag NPs were successfully synthesized in a rapid, low cost and eco-friendly methods using heat and microwave as thermal techniques while using UV-ozone and sunlight as photochemical techniques.The sunlight treated method was the most effective methods, provide, a rapid and green method.The nano silver-treated fabric showed significant antibacterial activity lasts even after 10 washing cycles with inhibition zone about 19 mm before washing and about13mm after 10 washing cycles with sunlight treatment. Performance tests on the treated fabrics as UPF measurement showed significant increment and the UPF have values up to87.4. In conclusion, the developed nano silver-treated fabrics can be subjected to different fields of applications that required both good performance and antibacterial properties
530			_aIssued also as CD
653		4	_aBiosynthesis
653		4	_aCotton fabric
653		4	_aSilver nano
700	0		_aEman Mohammed Ahmed Osman , _eSupervisor
700	0		_aRehab Mohammed Amin , _eSupervisor
856			_uhttp://172.23.153.220/th.pdf
905			_aNazla _eRevisor
905			_aShimaa _eCataloger
942			_2ddc _cTH
999			_c79804 _d79804