Melt Miscibility of HDPE/UHMWPE, LDPE/UHMWPE,
and LLDPE/UHMWPE Blends Detected by Dynamic
Rheometer¹

Yang Chen, Huawei Zou*, Ya Cao, and Mei Liang**

The State Key Lab of Polymer Materials Engineering, Polymer Research Institute of Sichuan University,
Chengdu 610065, China

*e-mail: hwzou@163.com
**e-mail: liangmeiww@163.com

Received August 29, 2013;
Revised Manuscript Received December 12, 2013

Abstract—The dynamic rheological behavior of high density polyethylene (HDPE)/ultrahigh molecular
weight polyethylene (UHMWPE) blends, low density polyethylene (LDPE)/UHMWPE blends and linear low
density polyethylene (LLDPE)/ UHMWPE blends was measured in parallel plate rheometer at 200C. The
analysis of log-additivity rule, Cole–Cole plots and Han curves of the three series blends indicated that the
LDPE/UHMWPE blends were miscible in the melt, while the HDPE/UHMWPE blends and LLDPE/UHM-
WPE blends showed phase separation. The DSC results of LLDPE/UHMWPE blends and HDPE/UHMWPE
blends were consistent with the rheological properties, while for the thermal properties of LDPE/UHMWPE
blends, results revealed three endothermic peaks, which indicated a liquid-solid phase separation in
LDPE/UHMWPE blends.

DOI: 10.1134/S0965545X14050046

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