SOLUBILITY OF POLYETHYLENE IN N-PENTANE AT HIGH-PRESSURE

被引：44

作者：

KIRAN, E

ZHUANG, WH

机构：

[1] Department of Chemical Engineering, University of Maine, Orono

来源：

POLYMER | 1992年 / 33卷 / 24期

关键词：

POLYETHYLENE; HIGH PRESSURE; SOLUBILITY; LCST; N-PENTANE; SUPERCRITICAL;

D O I：

10.1016/0032-3861(92)90810-J

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

The high pressure solubility of polyethylene standards (M(w) = 2100, 16400, 108000 and 420000 and M(w)/M(n) = 1. 14, 1.16, 1.32 and 2.66, respectively) in n-pentane has been studied. Concentrations of up to 15 wt% polymer have been investigated. For each polymer sample and concentration, pressures that are required to achieve single-phase solutions have been determined over a range of temperatures. The solutions are found to all show lower critical solution temperatures. Demixing pressures are observed to depend strongly on the molecular weight of the polymer.

引用

收藏

页码：5259 / 5263

页数：5

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