پديد آورنده :
فيروز، كورش
عنوان :
سنتز و شناسايي غشاهاي جديد مبادله كننده پرتون بر پايه پلي ايميدازول هاي سولفونه شده جهت كاربرد در پيل هاي سوختي پليمري
مقطع تحصيلي :
كارشناسي ارشد
محل تحصيل :
اصفهان: دانشگاه صنعتي اصفهان، دانشكده شيمي
صفحه شمار :
هجده،93ص.: مصور،جدول،نمودار
يادداشت :
ص.ع.به فارسي و انگليسي
استاد راهنما :
امير عبدالملكي
تاريخ نمايه سازي :
8/6/93
استاد داور :
شادپور ملك پور، عليرضا نجفي
چكيده انگليسي :
Abstract In this project two types of polybenzimidazoles containing pyridine and phenolicgroups has been prepared by condensation polymerization of 4 4 oxybis benzene 1 2 diamine with different dicarboxylic acids such as 5 hydroxy isophthalic acid andpyridine 2 6 dicarboxylic acid Results showed that polybenzimidazole based on 5 hydroxy isophthalic acid has higher proton conductivity compared with thecorresponding polybenzimidazole based on pyridine 2 6 dicarboxylic acid We camewith the results that this higher conductivity can be related to the incorporationphosphonate group on the polymer chain during condensation with poly phosphoricaciddue to the presence of the electron donating phenolic group in the main chain Then acidic hydrogens of phenolic and imidazolic groups was separated by sodium hydrideand reacted with 3 3 disulfonated 4 4 dichlorodiphenyl sulfone to incorporoitesulfonated groups to the polymer chain The resulting polymers were characterized byFT IR 1H NMR CHN and TGA Studies on the synthesized polymers exhibited thatthe presence of the sulfonated groups on the polymer backbone increased the protonconductivity of the membrane The result showed that these polymers show higherconductivity due to the presence of two phosphonated and sulfonated groups in thepolymer chain In the second part of the project synthesized diamine containingbenzimidazole ring reacted with different dianhydride and so differentpoly benzimidazole imide s have been synthesized which showed good protonconductivity To increase the proton conductivity benzimidazolic hydrogens separatedby sodium hydride and then reacted with sultone Synthesized polymers had comparableproton conductivity with Naphion 1H NMR FT IR TGA and CHN were used toidentify and characterize the sulfonated polymers
استاد راهنما :
امير عبدالملكي
استاد داور :
شادپور ملك پور، عليرضا نجفي
