پديد آورنده :
كميلي، سمانه
عنوان :
مدلسازي سنتز و طراحي اندازه نانوذرات با فرآيند انبساط سريع محلول فوق بحراني
مقطع تحصيلي :
كارشناسي ارشد
گرايش تحصيلي :
مهندسي شيمي
محل تحصيل :
اصفهان: دانشگاه صنعتي اصفهان، دانشكده مهندسي شيمي
صفحه شمار :
نوزده، 123، [II] ص.: جدول، نمودار
يادداشت :
ص.ع. به: فارسي و انگليسي
استاد راهنما :
محمد قريشي
توصيفگر ها :
نانوتكنولوژي , نانو مواد , سيالات فوق بحراني , ميكرونازل ها , كريستاليزاسيون
تاريخ نمايه سازي :
05/04/87
استاد داور :
شاپور رودپيما، حسن قاضي عسگر
چكيده فارسي :
به فارسي و انگليسي: قابل رؤيت در نسخه ديجيتال
چكيده انگليسي :
Abstract Rapid expansion of supercritical solution is one of techniques for generation nanoparticles This process has different and unique advantages producing very fine particles with the same and narrow size distribution controllability particle size high purity of particle ZLWKRXW VROYHQW Modeling of this process help to known effective parameters and how effect of them Modeling results of RESS showed that increasing the pre expansion temperature produced larger particles because temperature is an effective parameter on the growth of particles Smaller particles obtain by increasing preexpansion pressure lead to Modeling results of RESS showed that heat flux of expansion device nozzle if driving process to isotherm path lead to smaller particles another effective parameter is nozzle geometry modeling results show that increasing nozzle diameter lead to larger particles on the other side increasing converging angle generated smaller particles so that small diameter and large angle of nozzle is appropriate suitable In some experimental reports of rapid expansion of supercritical solution recommended adding capillary after nozzle Its effect is considered in model and to become distinct that smaller particles generated because addition capillary exceed residence time in subsonic part and in more time nucleation and condensation have majority mechanism Expansion chamber pressure is another independent and controllable parameter of this process Modeling results show that increasing this pressure lead to larger particles its increase appropriate suitable collision pdfMachine A pdf writer that produces quality PDF files with ease Produce quality PDF files in seconds and preserve the integrity of your original documents Compatible across nearly all Windows platforms if you can print from a windows application you can use pdfMachine Get yours now
استاد راهنما :
محمد قريشي
استاد داور :
شاپور رودپيما، حسن قاضي عسگر
