A modified UNIFAC-ZM model and phase equilibrium prediction of silicone polymers with ABE solution

RSC Advances ◽  
2016 ◽  
Vol 6 (59) ◽  
pp. 53643-53650
Author(s):  
Yang Xia ◽  
Zhen Wu ◽  
Bingxiong Lu ◽  
Tao Wang ◽  
Jiding Li
Keyword(s):  
Phase Equilibrium ◽  
Activity Coefficient ◽  
Temperature Effect ◽  
Infinite Dilution ◽  
Group Interaction ◽  
Experimental Results ◽  
New Model ◽  
Infinite Dilution Activity Coefficient ◽  
Silicone Polymers

Modification of the UNIFAC-ZM model was made with consideration of temperature effect on group interaction. The new model agreed with experimental results of infinite dilution activity coefficient well and could be applied for the prediction of phase equilibrium of PDMS.

Infinite dilution activity coefficient of solvents in poly-3-hydroxybutyrate from inverse gas chromatography

2020 ◽  
Vol 522 ◽  
pp. 112742
Author(s):  
Anne C. Belusso ◽  
Maria Lina Strack ◽  
Lucas da S. Guadagnin ◽  
Débora J.L. Faccin ◽  
Nilo S.M. Cardozo ◽  
...  
Keyword(s):  
Gas Chromatography ◽  
Activity Coefficient ◽  
Infinite Dilution ◽  
Inverse Gas Chromatography ◽  
Infinite Dilution Activity Coefficient

scholarly journals Partition Behavior of Alloying Elements in Nickel-Based Alloys and Their Activity Interaction Parameters and Infinite Dilution Activity Coefficients

2019 ◽  
Vol 38 (2019) ◽  
pp. 498-504 ◽  
Author(s):  
Tianhua Ju ◽  
Xueyong Ding ◽  
Yingyi Zhang ◽  
Xiangkui Chen ◽  
Weiliang Chen ◽  
...  
Keyword(s):  
Activity Coefficient ◽  
Interaction Parameter ◽  
Activity Coefficients ◽  
Infinite Dilution ◽  
Alloying Elements ◽  
The Third ◽  
Infinite Dilution Activity Coefficient ◽  
The Matrix ◽  
Activity Interaction Parameter ◽  
Partition Behavior

AbstractThe partition behavior of alloying elements between the γ’ and γ phases in Nickel-based alloys was investigated by using infinite dilution activity coefficient and activity interaction parameter. The results showed that the preferential partition behavior of elements in the γ’ and γ phases is related to its infinite dilution activity coefficient (\ln \gamma _i^0). When \ln \gamma _i^0 \ll 0, the element i has a strong tendency to partition in the γ’ phase; When \ln \gamma _i^0 approaches to zero, the element i has preferentially partition to the matrix γ phase. In addition, the partition behavior of element i in the γ’ and γ phases is also affected by the third element j in Nickel-based alloys, and this effect can be distinguished by the sign of the second-order activity interaction parameter \rho _i^{ij}.

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