Melt miscibility and solid-state properties of metallocene LLDPE blends with HDPE: Influence of MM of LLDPE

被引：2

作者：

Hameed, Tayyab ^{[1
]}

Hussein, Ibnelwaleed A.

机构：

[1] King Fahd Univ Petr & Minerals, Dept Chem Engn, Dhahran 31261, Saudi Arabia

[2] King Fahd Univ Petr & Minerals, Res Inst, Ctr Refining & Petrochem, Dhahran 31261, Saudi Arabia

来源：

JOURNAL OF CENTRAL SOUTH UNIVERSITY OF TECHNOLOGY | 2007年 / 14卷 / Suppl 1期

关键词：

molecular mass; metallocene LLDPE; miscibility; rheological property;

D O I：

10.1007/s11771-007-0241-7

中图分类号：

TF [冶金工业];

学科分类号：

0806 ;

摘要：

The influence of relative molecular mass (MM) of LLDPE on the rheological, thormal and mechanical properties of two sets of m-LLDPE/HDPE blends of low and high branch content (BQ was studied. Blends of m-LLDPE with linear HDPE reveal no influence of MM (60-100 kg/mol) on melt miscibility at low BC (about 20 branches/1 000 C. However, at high BC levels (about 40 branches/1000 Q, MM affects the melt miscibility of m-LLDPEiHDPE blends. The DSC results suggest that compatibility in the solid state is independent of MM and BC. For all blends studied, the HDPE-rich blends are found to contain single crystal populations, suggesting high degree of cocrystallization, whereas, m-LLDPE rich phase shows separate crystallization. Mechanical properties of these blends are found to be a strong function of blend compatibility and the specific properties of the blend components. In general, the high BC pairs show poor mechanical properties.

引用

页码：183 / 187

页数：5

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