کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
633424 | 1456032 | 2014 | 10 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Stability of blended polymeric materials for CO2 separation
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
تصفیه و جداسازی
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
Reduction of CO2 emission caused by fossil fuel power plants is widely appreciated task. The most suitable materials for off-gas membrane separation process are poly(ethylene glycol) containing polymers. Pebax® 1657 blended with low molecular weight poly(ethylene glycol)s is a promising material for the selective layer of thin film composite gas separation membranes. Stability of blend Pebax® 1657 thick membranes was evaluated at temperatures up to 90 °C, exceeding those at a stack of power plant. The membranes were tested for gas transport properties by thermoanalytical methods. It was found that a threshold of molecular weight exists between 350 and 500 g/mol, at which leaching out of the low molecular weight poly(ethylene glycol) compound from the polymer matrix becomes minimal. Poly(ethylene glycol) with methyl end groups having a molecular weight of 500 g/mol provides a blend material with a CO2 permeability coefficient higher than in case of Polyactiveâ¢. PEBAX®/DM500 blend can be a cheaper alternative to tailor made Polyactive⢠in large scale production of CO2 selective thin film composite membrane.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Membrane Science - Volume 467, 1 October 2014, Pages 269-278
Journal: Journal of Membrane Science - Volume 467, 1 October 2014, Pages 269-278
نویسندگان
Jelena Lillepärg, Prokopios Georgopanos, Sergey Shishatskiy,