کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1812490 1025617 2010 4 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Dynamics of polymers in elongational flow studied by the neutron spin-echo technique
موضوعات مرتبط
مهندسی و علوم پایه فیزیک و نجوم فیزیک ماده چگال
پیش نمایش صفحه اول مقاله
Dynamics of polymers in elongational flow studied by the neutron spin-echo technique
چکیده انگلیسی
The nanoscale fluctuation dynamics of semidilute high molecular weight polymer solutions of polyethylenoxide (PEO) in D2O under non-equilibrium flow conditions were studied by the neutron spin-echo technique. The sample cell was in contraction flow geometry and provided a pressure driven flow with a high elongational component that stretched the polymers most efficiently. Neutron scattering experiments in dilute polymer solutions are challenging because of the low polymer concentration and corresponding small quasi-elastic signals. A relaxation process with relaxation times of about 10 ps was observed, which shows anisotropic dynamics with applied flow.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Physica B: Condensed Matter - Volume 405, Issue 17, 1 September 2010, Pages 3690-3693
نویسندگان
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