پديد آورنده :
حسن نيا، محمدعلي
عنوان :
تاثير نانو ذرات رس بر مورفولوژي و رئولوژي آميزه سه تايي پلي پروپيلن/پلي كربنات/استايرن بوتادين استايرن
مقطع تحصيلي :
كارشناسي ارشد
گرايش تحصيلي :
مهندسي پليمر
محل تحصيل :
اصفهان : دانشگاه صنعتي اصفهان
صفحه شمار :
پانزده، 86ص.: مصور (رنگي)، جدول، نمودار
استاد راهنما :
محمود معصومي، احمد اسدي نژاد
توصيفگر ها :
مورفولوژي , رئولوژي , آلياژ سه تايي , پلي استايرن بوتادين استايرن بلاك كوپليمر , پلي كربنات , نانورس
استاد داور :
سعيد نوري خراساني، روح الله باقري
تاريخ ورود اطلاعات :
1398/05/16
رشته تحصيلي :
مهندسي شيمي
تاريخ ويرايش اطلاعات :
1398/05/19
چكيده انگليسي :
88AbstractIn current effort styrene butadiene styrene block copolymer SBS and polycarbonate PC were added to polypropylene PP to increase the application window of PP Rheology and morphology of ternary blends of PP PC SBS 70 15 15 were examined inabsence neat and in presence of organically modified nanoclay fillers Surface energyvalues of three constituent polymers were assessed using contact angle CA goniometryand used for preliminary prediction of the morphology of neat ternary blends Scanningelectron microscope SEM was employed for examining the effect of mixing order ofcomponents in an internal compounder on the resulting morphology of PP PC SBS blends A good agreement was found between CA and SEM results where a separated dispersedmorphology of PC and SBS droplets was visible A twin screw extruder TSE was utilizedto mix Cloisite 20A and Cloisite 30B nanoclays in 3 phr concentration with above mentioned polymers to render nanofilled PP PC SBS blends SEM X ray diffraction andtransmission electron microscope TEM were used to characterize the resultingmorphology XRD data showed that an intercalated morphology was obtained particularlyin the case of Cloisite 20A TEM confirmed that nanoclay fillers preferred to be locatedmainly inside the PP matrix rather than interfaces and droplets Rheological data revealedthat Cloisite 20A increased viscosity and modulus of the nanofilled blends more thanCloisite 30B In addition the solid like behavior was seen in low frequency terminalregion of the modulus frequency curve and was assigned to the physical network formedbecause of the nanoclay presence This motivated us to incorporate Cloisite 20A indifferent concentrations 1 and 5 phr and measure viscoelastic properties It was observedthat viscosity and modulus were maximum at 5 phr nanoclay content Keywords Morphology Rheology Ternary Blend Styrene Butadiene Styrene BlockCopolymer Polycarbonate Nanoclay
استاد راهنما :
محمود معصومي، احمد اسدي نژاد
استاد داور :
سعيد نوري خراساني، روح الله باقري
