ساخت و مشخصه یابی PIM برپایه سلولز استات به منظور تصفیه آب

نوع مقاله : مقاله پژوهشی

نویسندگان

1 مهندسی شیمی، دانشکده مهندسی شیمی، دانشگاه تربیت مدرس، تهران، ایران

2 دانشکده مهندسی شیمی، دانشگاه تربیت مدرس، تهران، ایران

3 دانشکده مهندسی شیمی, دانشگاه تربیت مدرس, تهران, ایران

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چکیده

باتوجه به خواص لیتیم، یون لیتیم امروزه دارای کاربردهای فراوانی در صنایع پزشکی، داروسازی، هسته­ای و باتری سازی  است. در این پژوهش به منظور جداسازی و غنی سازی Li+، یک غشای شامل پلیمری (PIM) طراحی و آماده شد. به طور کل PIM ها دارای سه جزء اصلی است که در این پژوهش شامل سلولز استات (CA) به عنوان پلیمر پایه، مایع یونی 1-Butyl-3-Methylimidazolium Chloride (BMIMCl) به  عنوان پلاستی­سایزر و اتر تاجی نوع 12-Crown-4 (12C4) به عنوان حامل کاتیون است. تاثیر میزان اجزای مختلف روی خواص ساختاری و عملکرد غشا بررسی شد. در این بین، غشا با ترکیب درصد وزنی 30، 46 و 24 به ترتیب برای پلیمر، مایع یونی و حامل بهترین شار عبوری لیتیم را نشان داد. نتایج حاصل از آنالیز ICP نشان داد که غشا هیچگونه کاتیونی را جذب نکرده است. همچنین، با توجه به ساختار این غشای PIM، می توان به این موضوع اشاره کرد که هر یون یا ایزوتوپی را می توان بوسیله این فناوری تنها با تغییر در نوع مواد جداسازی کرد.

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