کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5207426 | 1382350 | 2008 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Non-isothermal decomposition kinetics of azodicarbonamide in high density polyethylene using a capillary rheometer
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی آلی
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
In this work, a capillary rheometer coupled with a closed die was used to study the non-isothermal decomposition kinetics of azodicarbonamide (ACA) in high density polyethylene (HDPE). Samples having 0.5% ACA were studied with or without the addition of 0.1% zinc oxide (ZnO) as an activator. Using different temperature settings, the pressure related to polymer swelling and blowing gas evolution was followed as a function of time until equilibrium was reached. Via some calibrations and corrections, an extent of reaction method was combined with general nth-order reaction kinetics and the autocatalytic theory to obtain some kinetic parameters. The results show that this simple method can give good representation of the decomposition process.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Polymer Testing - Volume 27, Issue 6, September 2008, Pages 730-735
Journal: Polymer Testing - Volume 27, Issue 6, September 2008, Pages 730-735
نویسندگان
J.R. Robledo-Ortiz, C. Zepeda, C. Gomez, D. Rodrigue, R. González-Núñez,