پديد آورنده :
خردپرور، سمانه
عنوان :
بهبود سازگاري آلياژ پلي پروپيلن / پلي ﴿اتيلن ترفتالات﴾ از طريق اصلاح شيميايي زنجيره هاي PET و بررسي تاثير آن روي خواص فيزيكي - مكانيكي
مقطع تحصيلي :
كارشناسي ارشد
گرايش تحصيلي :
پليمر - صنايع
محل تحصيل :
اصفهان: دانشگاه صنعتي اصفهان ، دانشكده مهندسي شيمي
صفحه شمار :
يازده،66ص.: مصور، جدول، نمودار
استاد راهنما :
محمود معصومي
توصيفگر ها :
اصلاح سطح , آمينه كردن , كربو كسيله كردن , مالئيك انيدريد , گليسيديل - متااكريلات
تاريخ نمايه سازي :
1394/07/06
استاد داور :
سعيد نوري خراساني، احمدرضا شفيعي زادگان اصفهاني
چكيده فارسي :
به فارسي و انگليسي
چكيده انگليسي :
62 Compatibility improvement of Polypropylene Poly ethyleneterephthalate blend by chemical modification of PET chains and study it s effect on physical mechanical properties Samane Kheradparvar S Kheradparvar@ce iut ac ir Date of Submission August 02 2015 Department of Chemical Engineering Isfahan University of Technology Isfahan 84156 83111 Iran Degree M Sc Language Farsi Supervisor M Masoomi mmasoomi@cc iut ac irAbstractThe most polymer blends such as PP PET are classified as immiscible blends because of the differences inpolarity and solubility coefficient of different polymers Compatibility of immiscible blends may be improved byadding a third compatibilizing component or by adding suitable functionalized polymers capable of enhancedspecific interactions and chemical reactions in reactive systems In this study the PET chains were functionalizedthrough aminolysis and carboxylating process The presence of functional groups such as amine groups andcarboxyl groups along the PET chains increase the probability of reaction between these groups with functionalgroups of compatibilizers In addition to functionalizing the PET chains in PP PET blend two compatibilizersmaleic anhydride grafted polypropylene and glycidyl methacrylate grafted polypropylene have been used Toinvestigate the mechanical and physical properties for the prepared blends tensile SEM and DSC tests wereapplied FTIR ATR spectroscopy confirmed interaction of PET chains with amine through chemicalmodification The amounts of amine groups and carboxyl groups on PET chains were determined by methylorange and TBO reagents respectively DSC analysis shown that the products of the aminolysis act as nucleatingsites of the PET crystallization and cause the relative increase of crystallinity and causes the crystallinitytemperature to increase about 18 degrees On the other hand since during the aminolysis reaction themacromolecular scission probably occurs the SEM views confirm that the PET phase became brittle afteraminolysis because of the crack presence on PET chips surface So the tensile tests show the increase in modulusfor about 10 percent and decrease in tensile strength and strain at break of blends for which contain aminatedPET against blends contain virgin PET for about 33 percent While blends contain carboxylated PET show theincrease in modulus tensile strength and strain at break compared with blends contain virgin and aminated PETfor 20 percent The SEM micrograph of blends show the smaller particle morphology and better interfacialadhesion in presence of carboxylated PET but the increase in particle size in presence of aminated PET Also it snotably that PP g GMA was more efficient than PP g MA in PP PET blends as compatibilizer Key Words Polypropylene Poly ethyleneterephthalate Surface Modification Aminolysis Carboxylating
استاد راهنما :
محمود معصومي
استاد داور :
سعيد نوري خراساني، احمدرضا شفيعي زادگان اصفهاني
