مطالعه تخریب فاز جامد کامپوزیت پلی‌اتیلن-رودامینB تحت تابش نور UV

نوع مقاله: مقاله علمی پژوهشی

نویسندگان

دانشگاه مازندران

چکیده

در کار حاضر، کامپوزیت پلی‌اتیلن-رودامینB در غلظت‌های مختلف (%W/W 1/0 ،07/0 ،05/0 ،03/0 ،01/0) از رنگدانه رودامینB در ضخامت 200 میکرومتر تهیه شد. مفاهیم مختلف موثر بر تخریب نوری مانند شدت نور، زمان تابش و غلظت رودامینB مورد بررسی قرار گرفته است. اکسیداسیون توسط طیف سنجی FT-IR مورد مطالعه قرار گرفت و نشان داده شد که محصولات اکسیداسیون واجد گروه کربونیل بدست آمدند. همه نمونه‌ها تغییرات رنگ عمد‌ه ای را با شرایط تابش نشان دادند. نتایج به دست آمده نشان دادند که بازده تخریب نوری با افزایش شدت نور، غلظت رنگدانه و زمان افزایش یافته است. همچنین نشان داده شد که سینتیک فرایند تخریب نوری با مدل مرتبه اول پیروی می‌کند.

کلیدواژه‌ها


عنوان مقاله [English]

Solid Phase Degradation Study on Polyethylene-Rhodamine B Composite under UV light

چکیده [English]

    In the present work, Polyethylene- Rhodamine B composites at various concentration of Rhodamine B dye in 200 µm thickness were fabricated. Various influencing concepts like radiation time and concentration on photodegradtion of Rhodamine B in solid state was investigated. The oxidation was studied by FT-IR spectroscopy and it was shown that the oxidation products consisting carbonyl group are obtained. All samples exhibited significant changes in color with exposure conditions. Results indicated that the photodegradation efficiency was increased by rising radiation intensity, dye concentration and time of exposure. Also, it was showed that the photodegradation kinetics obeys a first-order kinetic model.

کلیدواژه‌ها [English]

  • Rhodamine B
  • Photodegradation
  • Polyethylene
  • Composite
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