کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
621476 882558 2009 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Residence time distribution of a pharmaceutical grade polymer melt in a single screw extrusion process
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی تصفیه و جداسازی
پیش نمایش صفحه اول مقاله
Residence time distribution of a pharmaceutical grade polymer melt in a single screw extrusion process
چکیده انگلیسی

The residence time distribution (RTD) of a flowing polymer through a single screw extruder was studied. This extruder allows injecting supercritical carbon dioxide (scCO2) used as physical foaming agent. The tested material is Eudragit E100, a pharmaceutical polymer. RTD was measured at various operating conditions and a model describing RTD has been developed. High screw speed or high temperature implies short residence time, but these parameters do not have the same effect on polymer flow. In the flow rate range studied, scCO2 has no significant influence. A mathematical model consisting of a plug flow reactor in series with a continuous stirred tank reactor (CSTR) cross-flowing with a dead volume fitted well the experimental data.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Chemical Engineering Research and Design - Volume 87, Issue 6, June 2009, Pages 809–816
نویسندگان
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