Effects of matrix viscoelasticity on drop deformation in dilute polymer blends under slow shear flow

被引：34

作者：

Guido, S

Simeone, M

Greco, F

机构：

[1] Univ Naples Federico II, Dipartimento Ingn Chim, I-80125 Naples, Italy

[2] CNR, ITMC, I-80125 Naples, Italy

来源：

POLYMER | 2003年 / 44卷 / 02期

关键词：

polymer blend; drop deformation in shear flow; normal stresses;

D O I：

10.1016/S0032-3861(02)00763-2

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 deformation of a single drop in a flowing dilute polymer blend is here investigated for slow steady shear, through video-enhanced microscopy and image analysis. The data are interpreted in terms of a perturbative solution of the fluidodynamic problem for small drop deformations, where effects of matrix viscoelasticity are taken into account. It is found that drop orientation towards the shear direction is directly linked to normal stresses in the matrix fluid. (C) 2002 Published by Elsevier Science Ltd.

引用

页码：467 / 471

页数：5

共 18 条

[1]

Astarita G., 1974, Principles of Non-Newtonian Fluid Mechanics

[2] DEFORMATION AND BURST OF A LIQUID DROPLET FREELY SUSPENDED IN A LINEAR SHEAR FIELD [J].