Two-Stage Growth of Polymer Nanoparticles at the Liquid–Vapor Interface by Vapor-Phase Polymerization

Langmuir ◽  
2016 ◽  
Vol 32 (42) ◽  
pp. 11014-11020 ◽  
Author(s):  
Robert J. Frank-Finney ◽  
Malancha Gupta
Author(s):  
Chao Liu ◽  
Liming Wan ◽  
Xinming Zhang ◽  
Danling Zeng

Molecular dynamics simulation (MDS) is adopted to investigate the characteristic of fractional motion of molecules in liquid phase, vapor phase and liquid-vapor interface in the paper. Based on the theory of mean free path and Shannon sampling theorem, the way to determine a universal criterion of time step of simulation is presented. It is shown that there exists difference in the regular pattern of molecular motion in the state of liquid and vapor phase. The fractional features are different for different matter states. Under the condition of same temperature, the characteristic fractional number of molecular motion in liquid state is greater than one in vapor state. It is shown that the fractional dimension numbers in the X, Y and Z direction of the liquid-vapor interface are different. This proves that the liquid-vapor interface has anisotropic character.


2010 ◽  
Vol 26 (1) ◽  
pp. N1-N7 ◽  
Author(s):  
T.-B. Chang

AbstractThis paper presents an analytical investigation into the effect of vapor superheating on the mixed-convection of a condensate layer flowing along the outside surface of an isothermal vertical cylinder. The governing system of partial differential equations is transformed into a dimensionless form using the nonsimilar transformation method. In investigating the heat transfer characteristics within the condensate layer and vapor phase, the analysis takes account of both the inertia effects and the convection effects within the condensate layer and the shear resistance at the liquid-vapor interface. The numerical results reveal that vapor superheating has a negligible effect on the temperature profile and local Nusselt number within the condensate layer. Moreover, it is found that a higher forced-flow intensity increases the temperature gradient in the vapor phase, but has a marginal effect on the temperature profile in the condensate layer. Finally, it is shown that the velocity at the liquid-vapor interface increases as the intensity of the forced-flow increases or as the ratio of the condensate layer viscosity to the vapor phase viscosity reduces.


Author(s):  
Didier Jamet ◽  
Olivier Lebaigue ◽  
Jean-Marc Delhaye ◽  
N. Coutris

2021 ◽  
Vol 3 (1) ◽  
pp. 2170013
Author(s):  
Jie Han ◽  
Weitao Jiang ◽  
Hongjian Zhang ◽  
Biao Lei ◽  
Lanlan Wang ◽  
...  

2013 ◽  
Vol 1 (20) ◽  
pp. 3353 ◽  
Author(s):  
Robert Brooke ◽  
Drew Evans ◽  
Maik Dienel ◽  
Pejman Hojati-Talemi ◽  
Peter Murphy ◽  
...  

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