Shear inhomogeneity in poly(ethylene oxide) melts

被引：29

作者：

Fang, Yuye ^{[1
]}

Wang, Guanglin ^{[2
]}

Tian, Nan ^{[2
]}

Wang, Xiao ^{[2
]}

Zhu, Xiangyang ^{[1
]}

Lin, Panpan ^{[1
]}

Ma, Guanglei ^{[1
]}

Li, Liangbin ^{[1
,2
]}

机构：

[1] Univ Sci & Technol China, Dept Polymer Sci & Engn, CAS Key Lab Soft Matter Chem, Hefei 230029, Peoples R China

[2] Univ Sci & Technol China, Coll Nucl Sci & Technol, Natl Synchrotron Radiat Lab, Hefei 230029, Peoples R China

来源：

JOURNAL OF RHEOLOGY | 2011年 / 55卷 / 05期

基金：

中国国家自然科学基金;

关键词：

ENTANGLED POLYMER-SOLUTIONS; WALL SLIP; UNIAXIAL EXTENSION; DEFORMATION; RHEOMETRY; DYNAMICS; RHEOLOGY; FRACTURE; LIQUIDS; FLOW;

D O I：

10.1122/1.3596599

中图分类号：

O3 [力学];

学科分类号：

08 ; 0801 ;

摘要：

The nonlinear rheological behavior of entangled poly(ethylene oxide) (PEO) melts was studied by particle-tracking velocimetry (PTV) technique in a cone-plate geometry. In the absence of wall slip, the PEO melts exhibited internal macroscopic motions after shear cessation, when the imposed strain was larger than a critical value (between 1 and 1.5 strain units). This nonquiescent relaxation behavior of entangled melts has only recently been reported once in the literature involving a room temperature melt, and our work is the first PTV observation of nonquiescent relaxation at high temperature. (c) 2011 The Society of Rheology. [DOI: 10.1122/1.3596599]

引用

页码：939 / 949

页数：11

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