کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1250884 1496039 2015 9 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Reactive melt blending of low-density polyethylene with poly (acrylic acid)
ترجمه فارسی عنوان
مخلوط کردن ذوب مجدد پلی اتیلن با چگالی کم با پلی (اسید اکریلیک)
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی (عمومی)
چکیده انگلیسی

Reactive melt blending of low-density polyethylene LDPE with a low molecular weight poly (acrylic acid) PAA in the presence of benzoyl peroxide (BPO) free radical initiator was studied by means of a HAAKE torque rheometer and a capillary rheometer FTIR spectroscopy and was used to characterize the structure of LDPE/PAA blends. The rheological behavior of blends has been investigated at different temperatures (170, 190, 210 and 230 °C) and shear rates (5.43, 18.1, 54.3, 181 and 543 S−1). With a rise of temperature and increasing shear rates the shear stress of blends increases nonlinearly. The melt viscosity increases with the increase in the PAA proportion but decreases with the increasing shear rate and shear stress. The melts of all the blends are pseudoplastic in nature. The flow behavior index (n) of the blends decreases with the increase in the PAA proportion and with the increase in the temperature. The temperature sensitivity of the flow behavior of the blends is studied using Arrhenius plots. The system exhibits relatively low activation energy which means less sensitivity to temperature with an increase in the PAA ratio.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Arabian Journal of Chemistry - Volume 8, Issue 2, March 2015, Pages 191–199
نویسندگان
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