کد مقاله کد نشریه سال انتشار مقاله انگلیسی ترجمه فارسی نسخه تمام متن
5199963 1381570 1993 5 صفحه PDF سفارش دهید دانلود کنید
عنوان انگلیسی مقاله ISI
The effect of backbone structure on the cloud point behaviour of polyethylene-ethane and polyethylene-propane mixtures
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی آلی
پیش نمایش صفحه اول مقاله
The effect of backbone structure on the cloud point behaviour of polyethylene-ethane and polyethylene-propane mixtures
چکیده انگلیسی
Cloud-point data to 155°C and 1300 bar are presented for mixtures of propane and ethane with polyethylene fractionated with respect to molecular weight and degree of chain branching. As the number of chain branches in the backbone of the polyethylene increases, the heat of fusion decreases and the pressure needed to obtain a single phase decreases by ∼ 140 bar in ethane and ∼ 70 bar in propane. The cloud-point curves for the unfractionated parent polyethylene in either solvent is at higher pressures than those for the fractionated samples, suggesting that high molecular weight oligomers and a broad polydispersity mask the effect of chain structure on the phase behaviour.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Polymer - Volume 34, Issue 12, 1993, Pages 2554-2558
نویسندگان
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