پديد آورنده :
دهقاني، مهدي
عنوان :
توليد و شناسايي پلي ﴿آميد-ايميد﴾ هاي جديد فعال نوري و زيست تخريب پذير و بيو نانو كامپوزيت هاي حاوي دي آمين داراي گروه جانبي تيازول و دي اكسيد تيتانيم
مقطع تحصيلي :
كارشناسي ارشد
گرايش تحصيلي :
آلي - پليمر
محل تحصيل :
اصفهان: دانشگاه صنعتي اصفهان، دانشكده شيمي
صفحه شمار :
دوازده، 57ص.: مصور، جدول، نمودار
يادداشت :
ص.ع. به فارسي و انگليسي
استاد راهنما :
شادپور ملك پور
استاد مشاور :
امير عبدالملكي
تاريخ نمايه سازي :
1/11/91
استاد داور :
عليرضا نجفي، كاظم كرمي
تاريخ ورود اطلاعات :
1396/09/22
چكيده فارسي :
به فارسي و انگليسي: قابل رويت در نسخه ديجيتالي
چكيده انگليسي :
Production and characterization of new optically active and biodegradable poly amide imide s and bionanocomposites bearing diamine with thiazole side group and titanium dioxide Mehdi Dehghani m dhghani@ch iut ac ir 18 November 2012 Department of Chemistry IsfahaN UNiversity of TechNology Isfahan 84156 83111 Iran Degree M Sc Language Farsi Supervisor Prof Shadpour Mallakpour E mail mallak@cc iut ac ir mallak777@yahoo com Abstract In this investigation a series of novel chiral and biodegradable poly amide imide s PAI s based on different amino acids were synthesized For this purpose at first pyromellitic dianhydride trimellitic anhydride and amino acids S valine L leucine L methionine L isoleucine have been used for the preparation of optically active diacids The diamine was prepared from 2 amino thiazole and 3 5 dinitro benzoyl chloride by iron oxide hydroxide catalyst and hydrazine monohydrate is restored and aromatic diamine is formed Finally the prepared diacids reacted with aromatic diamine 3 5 diamino N thiazole 2 yl benzamide via direct polycondensation by using tetra n butylammonium bromide triphenyl phosphite as condensing agent under conventional heating in order to prepare thermally stable and optically active PAIs The use of ionic liquide as solvent and catalyst for polyamidation reaction eliminate the need of volatile and toxic solvents The chemical structure of polymers was confirmed by FT IR 1H NMR 13C NMR spectroscopy X ray diffraction XRD elemental analysis and specific rotation Thermal properties of polymers were studied by TGA curves and morphology were investigated by field emission scanning electron microscopy FE SEM In other part of the project nanocomposites containing hydrophilic TiO2 nanoparticles were prepared for compatibility with polymer matrix the nanoparticles TiO2 nanoparticles were treated with coupling agent of aminopropyltriethoxysilane KH550 Then PAI TiO2 nanocomposites were synthesized under ultrasonic irradiation conditions The resulting nanocomposites were characterized by different techniques including FT IR XRD FE SEM and transmission electron microscopy TEM TGA confirmed that the heat stability of the composite was improved TEM results indicated that the TiO2 nanoparticles were dispersed homogenously in the polymer matrix In modified TiO2 the organic chains of coupling agent can fulfill steric hindrance between inorganic nanoparticles and prevent their aggregation The last section biological and biodegradability properties of synthetic polymers were investigated Keyword Optically active polymers Thermally stable polymers Titanium dioxide nanoparticles Nanocomposite Biodegradability
استاد راهنما :
شادپور ملك پور
استاد مشاور :
امير عبدالملكي
استاد داور :
عليرضا نجفي، كاظم كرمي
