کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
10264764 458013 2015 10 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Oxidation of crystalline polyethylene
ترجمه فارسی عنوان
اکسیداسیون پلی اتیلن بلورین
کلمات کلیدی
پلی اتیلن، اکسیداسیون کم دما، پارامترهای سینتیک و ترمو شیمیایی، تئوری کاربردی تراکم،
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی مهندسی شیمی (عمومی)
چکیده انگلیسی
Auto-oxidation of polyethylene (PE) is of a common occurrence and could be triggered by several physical and chemical factors. In this study, for the first time, we report a comprehensive theoretical account on the initial oxidation of crystalline PE at low temperatures prior to its melting. We map out potential energy surfaces for large number of reactions, most notably, initial abstraction by O2 molecules, formation of peroxy- and hydroperoxyl adducts, unimolecular eliminations of HO2 and H2O as well as CC bond fissions. Rate constants have been estimated for all considered reactions over the temperature range of 300-800 K. We have discussed noticeable similarities between the oxidation of PE and that of gas-phase alkanes. Results presented herein provide new insights into the solid-state oxidation of PE and germane crystalline polyolefins/paraffins and pure carbon-hydrogen-type polymers.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Combustion and Flame - Volume 162, Issue 10, October 2015, Pages 3681-3690
نویسندگان
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