Random-phase approximation calculation of the scattering function for multicomponent polymer systems

1993 ◽  
Vol 26 (1) ◽  
pp. 125-136 ◽  
Author(s):  
Jin Kon Kim ◽  
Kohtaro Kimishima ◽  
Takeji Hashimoto
Keyword(s):  
Random Phase Approximation ◽  
Random Phase ◽  
Phase Approximation ◽  
Scattering Function ◽  
Polymer Systems ◽  
Multicomponent Polymer ◽  
Approximation Calculation

scholarly journals Scattering of multicomponent polymer blends

2021 ◽  
Author(s):  
Henrich Frielinghaus
Keyword(s):  
Polymer Blends ◽  
Random Phase Approximation ◽  
Repeat Unit ◽  
Mean Field Theory ◽  
Random Phase ◽  
Mean Field ◽  
Phase Approximation ◽  
Field Phase ◽  
Phase Boundaries ◽  
Multicomponent Polymer

AbstractThe random phase approximation for polymer blends was developed by H. Benoît and described small angle scattering functions as well as mean field phase boundaries. It is a pure mean field theory that loses validity close to the real phase boundaries due to strong fluctuations. However, it gives a very clear roadmap about phase diagrams and scattering functions. A simplification of the random phase approximation is discussed that comes into effect when several polymers are mixed that involve a rather low number of chemically different repeat units. Then, the correlation functions of the same repeat unit pairs can be added up in a specific way such that the overall complexity for the calculations is reduced. The scattering functions and mean field phase boundaries are discussed within this concept. Graphical abstract

A practical method to account for random phase approximation effects on the dynamic scattering of multi-component polymer systems

2020 ◽  
Vol 152 (5) ◽  
pp. 054901
Author(s):  
M. Monkenbusch ◽  
M. Kruteva ◽  
M. Zamponi ◽  
L. Willner ◽  
I. Hoffman ◽  
...  
Keyword(s):  
Random Phase Approximation ◽  
Random Phase ◽  
Practical Method ◽  
Phase Approximation ◽  
Polymer Systems ◽  
Dynamic Scattering
Sign in / Sign up

Export Citation Format

Share Document