کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
5189601 1381189 2005 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
High-temperature gradient HPLC for the separation of polyethylene-polypropylene blends
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی آلی
پیش نمایش صفحه اول مقاله
High-temperature gradient HPLC for the separation of polyethylene-polypropylene blends
چکیده انگلیسی

A high-temperature gradient HPLC method has been developed for the analysis of polyethylene-polypropylene blends. For the first time it was possible to separate these polyolefin blends by a chromatographic technique which is operating at 140 °C. Blends of a commercial polypropylene and a medium molar mass linear polyethylene were separated using a mobile phase of ethylene glycol monobutylether (EGMBE) and 1,2,4-trichlorobenzene (TCB) and silica gel as the stationary phase. With the use of n-decanol as sample solvent, a precipitation-redissolution mechanism for polyethylene (PE) was established while polypropylene (PP) is eluted in size exclusion mode.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Polymer - Volume 46, Issue 26, 12 December 2005, Pages 12040-12045
نویسندگان
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