کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
671367 | 1459100 | 2008 | 9 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Network theory for polymer solutions in large amplitude oscillatory shear
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
جریان سیال و فرایندهای انتقال
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Network theory for polymer solutions in large amplitude oscillatory shear Network theory for polymer solutions in large amplitude oscillatory shear](/preview/png/671367.png)
چکیده انگلیسی
A framework based on molecular entanglement kinetics is used to interpret the large amplitude oscillatory shear (LAOS) behavior of polyacrylamide and polystyrene solutions. A kinetic rate equation for the balance of entanglements is capable of reasonably predicting previously reported LAOS data for these solutions. Secondary shear stress versus shear rate loops were manifested in both solutions under severe conditions, and we attribute these to nonaffine deformation. While affine transient network theory predicts reasonable agreement with the Lodge-Meissner relation in LAOS, the polystyrene solution disobeys the relationship at shear strain amplitudes exceeding unity. We explain this departure from the Lodge-Meissner relation in LAOS with nonaffine network deformation.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Non-Newtonian Fluid Mechanics - Volume 148, Issues 1â3, 17 January 2008, Pages 24-32
Journal: Journal of Non-Newtonian Fluid Mechanics - Volume 148, Issues 1â3, 17 January 2008, Pages 24-32
نویسندگان
Ranjit S. Jeyaseelan, A. Jeffrey Giacomin,