The Chain Stretching Effect on the Morphology and Rheological Properties of Phase-Separating Polymer Blends Subjected to Simple Shear Flow Export

@article{citeulike:1304720, abstract = {Summary: The spinodal decomposition of a binary mixture subjected to simple shear flow is investigated in the framework of the modified time-dependent Ginzburg-Landau (TDGL) equation with an external velocity term. The domain growth and related rheological properties of a binary mixture under shear flow are simulated in three dimensions by means of the cell dynamics scheme (CDS). The simulation results show that the domain growth is anistropic and depends on the terminal relaxation time of the polymer chain. It is found that lamellae-like domains with the normal parallel to the velocity gradient direction are observed when the terminal relaxation time is long enough. This result has also been confirmed by carefully checking the scattering functions in different incident light directions and the evolution of the domain size in different directions. In addition, when the chain stretching effect is strong, the transients of the excess shear viscosity are much higher than the case without the chain stretching effect. The terminal relaxation time of the chain also has an important effect on the first and second normal stress differences.}, address = {Department of Macromolecular Science, Key Laboratory of Molecular Engineering of Polymers, State Ministry of Education of China, Fudan University, Shanghai 200433, China}, author = {Luo, Kaifu and Zhang, Hongdong and Yang, Yuliang}, citeulike-article-id = {1304720}, citeulike-linkout-0 = {http://dx.doi.org/10.1002/mats.200300032}, citeulike-linkout-1 = {http://www3.interscience.wiley.com/cgi-bin/abstract/108564405/ABSTRACT}, doi = {10.1002/mats.200300032}, issn = {1521-3919}, journal = {Macromolecular Theory and Simulations}, keywords = {l, like}, number = {4}, pages = {335--344}, posted-at = {2007-05-22 04:24:56}, priority = {2}, title = {The Chain Stretching Effect on the Morphology and Rheological Properties of Phase-Separating Polymer Blends Subjected to Simple Shear Flow}, url = {http://dx.doi.org/10.1002/mats.200300032}, volume = {13}, year = {2004} }

TY - JOUR ID - citeulike:1304720 L3 - citeulike-article-id:1304720 N2 - Summary: The spinodal decomposition of a binary mixture subjected to simple shear flow is investigated in the framework of the modified time-dependent Ginzburg-Landau (TDGL) equation with an external velocity term. The domain growth and related rheological properties of a binary mixture under shear flow are simulated in three dimensions by means of the cell dynamics scheme (CDS). The simulation results show that the domain growth is anistropic and depends on the terminal relaxation time of the polymer chain. It is found that lamellae-like domains with the normal parallel to the velocity gradient direction are observed when the terminal relaxation time is long enough. This result has also been confirmed by carefully checking the scattering functions in different incident light directions and the evolution of the domain size in different directions. In addition, when the chain stretching effect is strong, the transients of the excess shear viscosity are much higher than the case without the chain stretching effect. The terminal relaxation time of the chain also has an important effect on the first and second normal stress differences. IS - 4 JF - Macromolecular Theory and Simulations SN - 1521-3919 AD - Department of Macromolecular Science, Key Laboratory of Molecular Engineering of Polymers, State Ministry of Education of China, Fudan University, Shanghai 200433, China EP - 344 TI - The Chain Stretching Effect on the Morphology and Rheological Properties of Phase-Separating Polymer Blends Subjected to Simple Shear Flow VL - 13 SP - 335 KW - l KW - like AU - Luo, Kaifu AU - Zhang, Hongdong AU - Yang, Yuliang PY - 2004/// UR - http://dx.doi.org/10.1002/mats.200300032 ER -