Rheological and morphological properties of high-density polyethylene and poly(ethylene-octene) blends

被引：15

作者：

Guimaraes, MJOC

Coutinho, FMB

Rocha, MCG

Farah, M

Bretas, RES

机构：

[1] Univ Fed Rio de Janeiro, Inst Macromol Prof Eloisa Mano, BR-21945970 Rio de Janeiro, Brazil

[2] Univ Fed Rio de Janeiro, Dept Proc Organ, Escola Quim, BR-21945970 Rio de Janeiro, Brazil

[3] Univ Fed Rio de Janeiro, Dept Proc Quim, Inst Quim, BR-21945970 Rio de Janeiro, Brazil

[4] UERJ, Inst Politecn, Nova Friburgo, RJ, Brazil

[5] Univ Fed Sao Carlos, Dept Mat, Sao Carlos, SP, Brazil

来源：

JOURNAL OF APPLIED POLYMER SCIENCE | 2002年 / 86卷 / 09期

关键词：

morphology; rheology; polyethylene; electron microscopy; polyolefins;

D O I：

10.1002/app.11201

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 rheological and morphological properties of blends based on high-density polyethylene (HDPE) and a commercial ethylene-octene copolymer (EOC) produced by metallocene technology were investigated. The rheological properties were evaluated in steady and dynamic shear experiments at 190degreesC in shear rates ranging from 90 s(-1) to 1500 s(-1) and frequency range between I rad/s and 10(2) rad/s, respectively. These blends presented a high level of homogeneity in the molten state and rheological behavior was generally intermediate to those of the pure components. Scanning electron microscopy (SEM) showed that the blends exhibit dispersed morphologies with EOC domains distributed homogeneously and with particle size inferior to 2 mum. (C) 2002 Wiley Periodicals, Inc.

引用

页码：2240 / 2246

页数：7

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