پديد آورنده :
اسدي، پروين
عنوان :
سنتز و شناسايي پلي استرايميد و نانو كامپوزيت هاي پلي استر ايميد/ دي اكسيد تيتانيوم جديد فعال نوري زيست تخريب پذير حاوي آمينو اسيدهاي مختلف در زنجيره اصلي و شاخه جانبي
مقطع تحصيلي :
كارشناسي ارشد
گرايش تحصيلي :
شيمي آلي- پليمر
محل تحصيل :
اصفهان: دانشگاه صنعتي اصفهان، دانشكده شيمي
صفحه شمار :
[چهارده]، 117ص.: مصور﴿رنگي﴾،جدول،نمودار
يادداشت :
ص.ع.به فارسي و انگليسي
استاد راهنما :
شادپور ملك پور
استاد مشاور :
مهران غياثي
توصيفگر ها :
پليمرهاي فعال نوري , پليمرشدن تراكمي , تيتانيوم دي اكسيد
تاريخ نمايه سازي :
15/6/89
استاد داور :
حميد جواهريان نقاش، امير عبدالملكي
چكيده فارسي :
به فارسي و انگليسي: قابل رويت درنسخه ديجيتالي
چكيده انگليسي :
Synthesis and Characterization of New Biodegradable Optically Active Poly ester imide and Poly ester imide Titanium Dioxide Nanocomposites Containing Different Aminoacids in Main and Side Chain Parvin Asadi Parvin asadi82@yahoo com 5April 2010 Department of Chemistry Isfahan University of Technology Isfahan84156 83111 Iran Supervisor Prof shadpour Mallakpour E mail mallak@cc iut ac ir mallak777@yahoo com Degree M Sc Language Farsi Abstract To bring this project in a short touch down for the first time a series of novel chiral biodegradable polyesterimides having different natural amino acids in the main chain as well as in the side chain were synthesized by direct polycondensation reactions Structural modifications designed is done to improve solubility of the polymers through the disturb regularity and chain packing Thus the new aromatic diol and four aromatic chiral diacid monomers were synthesized in several steps Chemical structure of these monomers was confirmed by FT IR 1H NMR 13C NMR spectroscopes elemental analysis and specific rotation techniques Direct step growth polymerization of these monomers for producing polyesterimides was carried out in the presence of tosyl chloride DMF and pyridine as condensing agent under conventional heating condition The optically active polyesterimides were obtained with good yield and moderate inherent viscosity ranging from 0 33 to 0 35 dL g and showed good thermal stability The presence of amino acid in the polyesterimides architecture not only cause to be used as optically materials but also makes the polymers as a biocompatible and biodegradable compound Biodegradability of polymers was investigated by exposing them to a biological environment includes the biological agents responsible for the deterioration of polymeric substances Biological agents such as bacteria fungi and their enzymes consume polymer as food source so that its original form disappears During degradation samples are removed for assessment of changes by light microscopy to assess surface damage and to look for the presence and nature of microbial growth All of information improve that these new polyester are biodegradable In the second part of the project the new nanocomposites drived from synthesized polyesterimide containing different amount of titanium dioxide as nanoparticle were synthesized To achieve good dispersity of nanoparticle in the polymer matrix amino propyle three ethoxy silicate was used as a coupling agent for copulating nanoparticle The presence of nanoparticle and its effect on polymer was confirmed by FT IR XRD UV spectrometer and TGA techniques These nanocomposite showed higher thermally stable than polyesterimides and also their SEM show the homogeny compound Keyword Optically active polymers Polycondensation reaction Biodegradable polymers nanocomposite titanium dioxide
استاد راهنما :
شادپور ملك پور
استاد مشاور :
مهران غياثي
استاد داور :
حميد جواهريان نقاش، امير عبدالملكي
