کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
9684910 | 1456217 | 2005 | 22 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Analysis of dual-mode model parameters for gas sorption in glassy polymers
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
تصفیه و جداسازی
پیش نمایش صفحه اول مقاله
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چکیده انگلیسی
A certainty/uncertainty study of dual-mode model parameters for gas sorption in glassy polymers is discussed based on a statistical analysis employing about 250 types of glassy polymers from extensive literature data. The dual-mode sorption parameters correlate to various factors, such as the glass transition temperature, fractional free volume, gas permeability, gas diffusivity, and gas solubility. However, a wide variation of the dual-mode parameters is observed for each correlation. Better correlations, such as those involving the Langmuir-site contribution to the total solubility at infinite-dilution (SH0/S0), or non-equilibrium excess free volume fraction ratios ((Câ²H/Ï*)/FFV), appear only among families of similar glassy polymers. Hence, the dual-mode analysis for gas sorption in glassy polymers can be used as an effective strategy in terms of relative evaluations. However, it is difficult to quantitatively compare the parameter values between different types of glassy polymers.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Membrane Science - Volume 253, Issues 1â2, 5 May 2005, Pages 117-138
Journal: Journal of Membrane Science - Volume 253, Issues 1â2, 5 May 2005, Pages 117-138
نویسندگان
Shinji Kanehashi, Kazukiyo Nagai,