Thermogravitational Thermal Diffusion in Liquid Polymer Solutions

1994 ◽  
Vol 27 (18) ◽  
pp. 4968-4971 ◽  
Author(s):  
O. Ecenarro ◽  
J. A. Madariaga ◽  
J. L. Navarro ◽  
C. M. Santamaria ◽  
J. A. Carrion ◽  
...  
Keyword(s):  
Thermal Diffusion ◽  
Polymer Solutions ◽  
Liquid Polymer

Erratum: Thermal Diffusion in Polymer Solutions

1956 ◽  
Vol 24 (3) ◽  
pp. 620-620 ◽  
Author(s):  
A. H. Emery ◽  
H. G. Drickamer
Keyword(s):  
Thermal Diffusion ◽  
Polymer Solutions

Correlation between thermal diffusion and solvent self-diffusion in semidilute and concentrated polymer solutions

2007 ◽  
Vol 126 (21) ◽  
pp. 214901 ◽  
Author(s):  
J. Rauch ◽  
M. Hartung ◽  
A. F. Privalov ◽  
W. Köhler
Keyword(s):  
Thermal Diffusion ◽  
Polymer Solutions ◽  
Self Diffusion

Thermal Diffusion in Polymer Solutions

1955 ◽  
Vol 23 (12) ◽  
pp. 2252-2257 ◽  
Author(s):  
A. H. Emery ◽  
H. G. Drickamer
Keyword(s):  
Thermal Diffusion ◽  
Polymer Solutions

Thermal diffusion of dilute polymer solutions

1998 ◽  
Vol 37 (4) ◽  
pp. 406-413
Author(s):  
P. O. Brunn ◽  
E. Ryssel
Keyword(s):  
Thermal Diffusion ◽  
Polymer Solutions ◽  
Dilute Polymer Solutions

Regularities of formation of emboli of liquid polymer solutions in aqueous medium

2017 ◽  
Vol 10 (1) ◽  
pp. 68-73
Author(s):  
O. A. Legon’kova ◽  
V. N. Dan ◽  
S. V. Sapelkin ◽  
S. A. Kedik ◽  
E. S. Zhavoronok ◽  
...  
Keyword(s):  
Aqueous Medium ◽  
Polymer Solutions ◽  
Liquid Polymer

scholarly journals A computational study of the Ludwig-Soret effect on the thermal-induced phase separation process in polymer solutions

2021 ◽  
Author(s):  
Sureshkumar B. Kukadiya
Keyword(s):  
Temperature Field ◽  
Phase Separation ◽  
Thermal Diffusion ◽  
Polymer Solutions ◽  
Soret Effect ◽  
Separation Mechanism ◽  
Uniform Temperature ◽  
Diffusion Phenomenon ◽  
Uniform Temperature Field ◽  
Phase Separation Mechanism

Thermal-induced phase separation (TIPS) is one of the methods used to fabricate functional polymeric materials, i.e. PDLC films for electro-optical devices such flat-panel displays, switchable windows etc., and microporous synthetic membranes from polymer solutions. Since the characteristic thermal, mechanical, and optical properties of these materials are controlled by the morphological features, it it important to understand the phase separation mechanism that forms these materials. In this work, the effect of thermal diffusion, also known as the Ludwig-Soret effect, on the TIPS method of phase separation via the SD mechanism in polymer solutions under non-uniform temperature field has been investigated using the computational technique. The Ludwig-Soret effect occurs when a temperature gradient applied to a fluid mixture induces a net mass flow, which leads to the formation of a concentration gradient. A rigorous mathematical model for TIPS via the spinodal decomposition mechanism based on the nonlinear Cahn-Hilliard and Flory-Huggins theories combined with thermal diffusion phenomenon has been formulated for binary polymer solutions under non-uniform temperature field and solved numerically. Numerical simulation results revealed that the thermal diffusion phenomenon had very little or negligible effect on the phase separation mechanism under a non-uniform temperature field, which was reflected from the studies of the time evolution of structure factor and transition time from the early to the intermediate stages of SD.

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