scholarly journals Entangled chain polymer liquids under continuous shear deformation: consequences of a microscopically anharmonic confining tube

Soft Matter ◽  
2018 ◽  
Vol 14 (34) ◽  
pp. 7052-7063 ◽  
Author(s):  
Shi-Jie Xie ◽  
Kenneth S. Schweizer
Keyword(s):  
Shear Deformation ◽  
Chain Polymer ◽  
Rheological Response ◽  
Flexible Polymer ◽  
Continuous Shear ◽  
Polymer Liquids ◽  
Induced Changes

Deformation-induced changes of tube confinement field significantly modifies the shear rheological response of entangled flexible polymer liquids at WiR < 1.

Shear thinning of unentangled flexible polymer liquids

2006 ◽  
Vol 46 (5) ◽  
pp. 569-575 ◽  
Author(s):  
R. H. Colby ◽  
D. C. Boris ◽  
W. E. Krause ◽  
S. Dou
Keyword(s):  
Shear Thinning ◽  
Flexible Polymer ◽  
Polymer Liquids

scholarly journals Nonlinear Rheology and Fracture of Disclination Network in Cholesteric Blue Phase III

2018 ◽  
Author(s):  
Shuji Fujii ◽  
Yuji Sasaki ◽  
Hiroshi Orihara
Keyword(s):  
Shear Rate ◽  
Shear Flow ◽  
Shear Deformation ◽  
Nonlinear Viscoelasticity ◽  
Nonlinear Regime ◽  
Force Balance ◽  
Phase Iii ◽  
Elastic Response ◽  
Continuous Shear ◽  
Blue Phase

Nonlinear rheological properties of chiral crystal cholesteryl oleyl carbonate (COC) in blue phase III are investigated under different shear deformations; large amplitude oscillatory shear, step shear deformation, and continuous shear flow. Rheology of the liquid crystal is significantly affected by structural rearrangement of defects under shear flow. One of the examples on the defect-mediated rheology is the blue phase rheology. Blue phase is characterized by three dimensional network structure of the disclination lines. It has been numerically studied that the rheological behavior of the blue phase is dominated by destruction and creation of the disclination networks. In this study, we find that the nonlinear viscoelasticity of BPIII is characterized by the fracture of the disclination networks. Depending on the degree of the fracture, the nonlinear viscoelasticity is divided into two regimes; the weak nonlinear regime where the disclination network locally fractures but still show elastic response, and the strong nonlinear regime where the shear deformation breaks up the networks, which results in a loss of the elasticity. Continuous shear deformation reveals that a series of the fracture process delays with shear rate. The shear rate dependence suggests that force balance between the elastic force acting on the disclination lines and the viscous force determines the fracture behavior.

Development of Continuous Shear Deformation (Conshearing) Process

2000 ◽  
Vol 2000.3 (0) ◽  
pp. 477-478
Author(s):  
Yoshihiro SAITO ◽  
Hiroshi UTSUNOMIYA ◽  
Hiroyuki SUZUKI ◽  
Tetsuo SAKAI
Keyword(s):  
Shear Deformation ◽  
Continuous Shear

scholarly journals Thermal Conductivity of Long Chain Polymer Liquids: Molecular Dynamics Study on Contribution of Inter- and Intramolecular Energy Transfer

Netsu Bussei ◽  
2014 ◽  
Vol 24 (3) ◽  
pp. 134-140
Author(s):  
TAN Chia Yuan ◽  
Daichi TORII ◽  
Naohiro KOSUGI ◽  
Gota KIKUGAWA ◽  
Taku OHARA
Keyword(s):  
Thermal Conductivity ◽  
Molecular Dynamics ◽  
Energy Transfer ◽  
Intramolecular Energy Transfer ◽  
Chain Polymer ◽  
Polymer Liquids ◽  
Long Chain

Effects of molecular structure on microscopic heat transport in chain polymer liquids

2015 ◽  
Vol 142 (16) ◽  
pp. 164509 ◽  
Author(s):  
Hiroki Matsubara ◽  
Gota Kikugawa ◽  
Takeshi Bessho ◽  
Seiji Yamashita ◽  
Taku Ohara
Keyword(s):  
Molecular Structure ◽  
Heat Transport ◽  
Chain Polymer ◽  
Polymer Liquids

Heat conduction in chain polymer liquids: Molecular dynamics study on the contributions of inter- and intramolecular energy transfer

2011 ◽  
Vol 135 (3) ◽  
pp. 034507 ◽  
Author(s):  
Taku Ohara ◽  
Tan Chia Yuan ◽  
Daichi Torii ◽  
Gota Kikugawa ◽  
Naohiro Kosugi
Keyword(s):  
Molecular Dynamics ◽  
Energy Transfer ◽  
Heat Conduction ◽  
Intramolecular Energy Transfer ◽  
Chain Polymer ◽  
Polymer Liquids
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