000			02653cam a2200337 a 4500
003			EG-GiCUC
005			20250223031217.0
008			150421s2014 ua dh f m 000 0 eng d
040			_aEG-GiCUC _beng _cEG-GiCUC
041	0		_aeng
049			_aDeposite
097			_aPh.D
099			_aCai01.12.20.Ph.D.2014.Ah.P
100	0		_aAhmed Mohamed Abdelbary
245	1	0	_aPhysical properties of irradiated conductive polypyrrole doped poly vinylchloride-poly methylmethacrylate blend / _cAhmed Mohamed Abdelbary ; Supervised Hamdy Osman , Magdy Omar
246	1	5	_aالخواص الفيزيائية لهجين مشعع من البولى بيرول الموصل - البولى فينيل كلورايد - البولى ميثيل ميثاكريلات
260			_aCairo : _bAhmed Mohamed Abdelbary , _c2014
300			_a134 P. : _bcharts , facsimiles ; _c30cm
502			_aThesis (Ph.D.) - Cairo University - Faculty of Science - Department of Physics
520			_aA variety of experimental techniques is employed to draw a consistent picture of the physical properties of PVC/PMMA loaded with different concentrations of conductive PPy nano filler. Electrical, mechanical, and thermal behaviors of such materials were investigated. DSC thermograms of native composites were plotted. One Tg is displayed for blend and this indicates the homogeneous behaviour of it. The weight losses for samples starts at approximately 200{u1D52}C and end at 370 {u1D52}C and the final weight loses of 47%-63% is detected. The addition of conductive polypyrrole particles shifts the two peaks of XRD toward higher 2{u04E8} values which confirm the complete mixing of this filler with PVC and PMMA matrices. The dielectric constants were measured. The experimental dielectric constant values were compared with four models and found that the model offered by Ezzat et al fit well. The mechanical properties (Young's modulus) are obviously improved by the addition of conductive PPy. Both {u0190}' and vac obviously increase after ion implantation. The irradiation at 4.87x10¹⁴ ions cm⁻² increases vac of sample PVC/PMMA loaded with 3 wt. % PPy by 3 orders of magnitude. Br ion fluences change the type of conduction mechanism for samples pure PVC/PMMA at different fluences, 1 wt. %, and 2 wt. % at 5.95x10¹⁴ ions cm⁻²
530			_aIssued also as CD
653		4	_aMechanical
653		4	_aPhysical properties
653		4	_aPVC
700	0		_aHamdy Osman , _eSupervisor
700	0		_aMagdy Omar , _eSupervisor
856			_uhttp://172.23.153.220/th.pdf
905			_aNazla _eRevisor
905			_aSoheir _eCataloger
942			_2ddc _cTH
999			_c50543 _d50543