Phase diagrams calculated for flowing polymer solutions: spinodal and three phase conditions

1998 ◽  
Vol 40 (2-3) ◽  
pp. 353-360 ◽  
Author(s):  
Roland Horst ◽  
B. A. Wolf
Keyword(s):  
Phase Diagrams ◽  
Polymer Solutions ◽  
Three Phase

Phase diagrams of quasi-binary polymer solutions and blends

Polymer ◽  
1993 ◽  
Vol 34 (12) ◽  
pp. 2540-2545 ◽  
Author(s):  
Stephen J. Mumby ◽  
Peter Sher ◽  
B.E. Eichinger
Keyword(s):  
Phase Diagrams ◽  
Polymer Solutions ◽  
Binary Polymer

Phase diagrams of binary polymer solutions and blends

1991 ◽  
Vol 24 (7) ◽  
pp. 1655-1661 ◽  
Author(s):  
Caibao Qian ◽  
Stephen J. Mumby ◽  
B. E. Eichinger
Keyword(s):  
Phase Diagrams ◽  
Polymer Solutions ◽  
Binary Polymer

scholarly journals Dendritic Pattern Formation and Contact Line Forces during Dewetting of Dilute Polymer Solutions on a Hydrophobic Surface

2022 ◽  
Vol 6 (1) ◽  
pp. 5
Author(s):  
Volfango Bertola
Keyword(s):  
Contact Line ◽  
Polyethylene Oxide ◽  
Polymer Solutions ◽  
Hydrophobic Surface ◽  
Breakup Mechanism ◽  
Dilute Polymer Solutions ◽  
Three Phase ◽  
String Structure ◽  
Receding Contact ◽  
Quantitative Explanation

The micro-scale morphology of the receding contact line of dilute polyethylene oxide solution drops (c ∼ 100 ppm) after impact and inertial spreading on a fluorinated hydrophobic surface is investigated. One can observe the formation of transient liquid filaments and dendritic structures that evolve into a bead-on-a-string structure similar to the well-known capillary breakup mechanism of dilute polymer solutions, which confirm the interaction between stetched polymer coils and the receding three-phase contact line. The estimation of the average polymer force per unit contact line lenght provides a quantitative explanation for the reduction of the contact line retraction velocity reduction observed experimentally.

Mutual diffusion in polymer solutions: Spanning phase diagrams

Polymer ◽  
2016 ◽  
Vol 97 ◽  
pp. 472-479 ◽  
Author(s):  
S. Shams Es-haghi ◽  
M. Cakmak
Keyword(s):  
Phase Diagrams ◽  
Polymer Solutions ◽  
Mutual Diffusion

scholarly journals Phase Diagrams of Ternary π-Conjugated Polymer Solutions for Organic Photovoltaics

Polymers ◽  
2021 ◽  
Vol 13 (6) ◽  
pp. 983
Author(s):  
Jung Yong Kim
Keyword(s):  
Phase Diagrams ◽  
Interaction Parameter ◽  
Organic Photovoltaics ◽  
Conjugated Polymer ◽  
Lattice Theory ◽  
High Performance ◽  
Polymer Solutions ◽  
Metastable Phase ◽  
Unstable Phase ◽  
Tie Line

Phase diagrams of ternary conjugated polymer solutions were constructed based on Flory-Huggins lattice theory with a constant interaction parameter. For this purpose, the poly(3-hexylthiophene-2,5-diyl) (P3HT) solution as a model system was investigated as a function of temperature, molecular weight (or chain length), solvent species, processing additives, and electron-accepting small molecules. Then, other high-performance conjugated polymers such as PTB7 and PffBT4T-2OD were also studied in the same vein of demixing processes. Herein, the liquid-liquid phase transition is processed through the nucleation and growth of the metastable phase or the spontaneous spinodal decomposition of the unstable phase. Resultantly, the versatile binodal, spinodal, tie line, and critical point were calculated depending on the Flory-Huggins interaction parameter as well as the relative molar volume of each component. These findings may pave the way to rationally understand the phase behavior of solvent-polymer-fullerene (or nonfullerene) systems at the interface of organic photovoltaics and molecular thermodynamics.

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