نشریه علمی فرآیند نو

نشریه علمی فرآیند نو

مطالعه ساختار و عملکرد الیاف توخالی نانوکامپوزیتی PVC/SiO2 به عنوان تماس‌دهنده غشایی

نوع مقاله : پژوهشی

نویسندگان
فرزاد جوادی 1
بهزاد محمدی الستی 1
مهسا امیرعابدی 2
صبا روشیان 3
پریا امیرعابدی 4
1 دانشکده مهندسی مکانیک، واحد بناب، دانشگاه آزاد اسلامی، بناب، ایران
2 دانشکده مهندسی مکانیک، واحد عجب شیر، دانشگاه آزاد اسلامی، عجب شیر، ایران
3 دانشکده مهندسی شیمی، دانشگاه تربیت مدرس، تهران، ایران
4 دانشکده فنی و مهندسی، دانشگاه صنعتی خاتم الانبیاء (ص)، بهبهان، ایران
10.22034/farayandno.2025.2051728.1986
چکیده
استفاده از تماس‌دهنده‌های غشایی در تصفیه گازهای اسیدی از پیشرفت‌های مهم فرآیندهای مهندسی و محیط‌زیستی است. ترشوندگی غشاهای پلیمری توسط جاذب‌های مایع، مهم‌ترین مانع در توسعه این فناوری محسوب می‌شود، زیرا مقاومت انتقال جرم را افزایش داده و جذب گاز را کاهش می‌دهد. در این پژوهش، غشاهای پلی‌وینیل‌کلراید آبگریز حاوی نانوذرات آبگریز سیلیکا با درصدهای وزنی مختلف (0، 1، 1/5 و 2) ساخته شدند. آزمون‌های XRD، SEM، TEM، AFM، زاویه تماس، استحکام کششی و جذب CO2 برای ارزیابی غشاها انجام گرفت. تصاویر SEM وجود نانوذرات را تأیید نمود و طبق نتایج به دست آمده، افزودن نانوذرات به میزان %1/5 زاویه تماس را از °77 به °94 افزایش داد. همچنین، حضور نانوذرات استحکام کششی را حدود MPa 10 بهبود بخشید. عملکرد غشاها در جذب CO2 نیز نشان داد که شار گاز در غشاهای نانوکامپوزیتی با %1/5 نانوذره پس از 20 روز ثابت ماند، درحالی‌که شار غشاهای خالص کاهش یافت.
کلیدواژه‌ها
پلی‌وینیل‌کلراید
نانوکامپوزیت
نانوذرات آبگریز
تماس‌دهنده‌های غشایی
کربن دی‌اکسید

موضوعات

عنوان مقاله English

Investigation of the Structure and Performance of PVC/SiO2 Nanocomposite Hollow Fibers as a Membrane Contactor

نویسندگان English

Farzad Javadi 1
Behzad Mohammadi Alasti 1
Mahsa Amirabedi 2
Saba Raveshiyan 3
Parya Amirabedi 4
1 Department of Mechanical Engineering, Bonab Branch, Islamic Azad University, Bonab, Iran
2 Department of Mechanical Engineering, Ajabshir Branch, Islamic Azad University, Ajabshir, Iran
3 Department of Chemical Engineering, Tarbiat Modares University, Tehran, Iran
4 Department of Chemical Engineering, Behbahan Khatam Alanbia University of Technology, Behbahan, Iran
چکیده English

Membrane contactors offer a promising solution for acidic gas treatment; however, the wettability of polymeric membranes by liquid absorbents increases mass transfer resistance and lowers gas absorption efficiency. This study developed hydrophobic polyvinyl chloride (PVC) membranes incorporating silica nanoparticles at varying concentrations (0, 1, 1.5, and 2 wt.%). The membranes were characterized using XRD, SEM, TEM, AFM, contact angle measurements, tensile strength, and CO₂ absorption analysis. SEM images confirmed the presence of nanoparticles, and results indicated that 1.5 wt.% nanoparticle addition raised the contact angle from 77° to 94°, thereby reducing wettability. Additionally, tensile strength improved by approximately 10 MPa with nanoparticle inclusion. CO₂ absorption tests demonstrated consistent gas flux in membranes with 1.5 wt.% nanoparticles over 20 days, whereas pristine membranes showed a decline. These findings underscore the potential of nanocomposite membranes to enhance gas absorption and durability in acidic gas treatment processes.

کلیدواژه‌ها English

Polyvinyl Chloride
Nanocomposite
Hydrophobic Nanoparticles
Membrane Contactor
CO2
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