اصلاح پلي(اترسولفون) و غشاي تخم شترمرغ جهت حذف آلاينده هاي آب و عملكرد كاتاليزوري غشاي تخم شترمرغ اصلاح شده با پلي(آليل تري متيل آمونيوم يديد) در واكنش هاي حلقه زايي دي اكسيدكربن با اپوكسيدها

چكيده انگليسي :

111Modification of poly ether sulfone and ostrich egg shell membrane forwater pollutants removal and the catalytic performance of poly allyltrimethyl ammonium iodide modified ostrich egg shell membrane incycloaddition reaction of carbon dioxide with epoxides Zahra Mohamadi E mail z mohamadi@ch iut ac ir z mohammadi20@gmail com January 2019 Department of Chemistry Isfahan University of Technology 84156 83111 Isfahan IranSupervisor Dr Amir Abdolmaleki Email abdolmaleki@cc iut ac ir abdolmaleki@gmail comAdvisor Dr Hossein FashandiDepartment Graduate Coordinator Dr Mohammad Dinari Department of Chemistry Isfahan University of Technology Isfahan 84156 83111AbstractThe water pollution control is considered as one of the environmental key concerns leads to seek novel usefuland scientific techniques to identify and remove toxic agents Since the agriculture and human health areseriously threatened by heavy metals and dyes contaminants in water in this project the purification separation and removal strategies were studied Therefore in the first section the sulfonated poly ethersulfone was prepared by chlorosulfunic acid CSA and concentrared sulfunic acid as the sulfonating agentand the solvent respectively Then PES and sPES nanofibers were synthesized through electrospinning andPEDOT SPES nanofibers were obtained by in situe polymerization of EDOT on the surface of the resultingnanowven fiber mats The structural characteristics and configuration of the obtained membranes by elementalanalyses FT IR SEM TGA BET UV Vis techniques and hydrophilicity properties were investigated basedon contact angle Finally they were applied for the adsorption of Pb II Cd II and Cr VI as heavy metals The second section of this project involved two parts Part one for preparing magnetic IDA GO@Fe3O4 GOis covalently modified with an ethylene diamine followed by condensation with chlroacetic acid and finallydecorated by Fe3O4 IDA GO@Fe3O4 was evaluated by FT IR FE SEM TGA and XRD Then the obtainedmagnetic adsorbent efficiency for anionic and cationic dyes removal was investigated Part two nanocomposite membranes based on IDA GO and mixed PES and sPES were produced via phase inversion Also influence of the modified graphene content on structural and morphological properties water permeationand membranes effectiveness in dyed waste water purification was examined The membrane morphology andproperties was confirmed by SEM water contact angle overall porosity and mean pore diameter In the sectionthree the ostrich egg shell membrane was modified by UV photografted polymerization applying poly acrylicacid and poly allyl trimethyl ammonium iodide ESM PAA and ESM PATA were employed as biosorptioncontaining negative and positive charges in order to remove the cationic dye methylene blue and anionic dye methyl orange respectively The characterizations of the obtained biosorbents were studied by FT IR andFE SEM images It should be mentioned that in all the samples the adsorbents initial concentration contacttime and pH influence on adsorption capacity were evaluated Also the adsorbents behavior was examinedby the isotherm and kinetic models Increasing CO2 concentration on the earth due to fossil fuels becomesthreat to the animal and human living system Therefore the catalytic coupling of CO2 with epoxides to cycliccarbonate is one of the promising strategies in decreasing the CO2 environmental effects In this way the fourthsection attempted at applying a high efficient biocompatible and economic catalyst to synthesize the cycliccarbonate Then because of the ESM PATA compatibility wide range of reaction conditions it was appliedfor the first time as a catalyst in coupling reaction of carbon dioxide with different epoxides in solvent freeconditions It was shown that the hydroxyl and amine groups on the catalyst surface could play a key role inthe reactions through the hydrogen bonding interactions between the epoxides and hydroxyl groups In thissection the catalyst amount

محمدي، زهرا

آلاينده ها , فلزات سنگين , پلي(اترسولفون) , رنگ كاتيوني , رنگ آنيوني , گرافن عامل دار , كربنات حلقوي , دي اكسيدكربن , غشاي تخم شترمرغ