TY  - JOUR
T1  - Phase Separation Analysis in the Ternary System of Poly
(Butylene Succinate)/1,1,2,2,-Tetrachlo Ethane/Non-Solvent in
Relation to Membrane Formation
AU - Ebrahimpour, Melika AU - Safekordi, Ali A. AU - Nasab, Amir Heydari AU - Mousavi, Seyed Mahmoud 
JO  - International Business Management
VL  - 10
IS  - 25
SP  - 5876
EP  - 5884
PY  - 2016
DA  - 2001/08/19
SN  - 1993-5250
DO  - ibm.2016.5876.5884
UR  - https://makhillpublications.co/view-article.php?doi=ibm.2016.5876.5884
KW  - Binodal curve
KW  -cloud point
KW  -ternary systems
KW  -membrane
KW  -strongest coagulation
AB  - Phase separation analysis of a three-component, membrane-forming system: poly (butylene
succinate) (PBS)/1,1,2,2-Tetrachloethane/non-solvent is described. Cloud point data were obtained by the
titration method on the ternary system diagramfrom a limited number of experiments. These curves obtained
for the different non-solvents including methanol, methanol/isopropanol (50/50,v/v), isopropanol. The phase
diagram for aternary system of poly (butylene succinate ) (PBS)/1,1,2,2-Tetrachloethane/non-solvent was
determined by numerical calculation on the basis of the Compressible Regular Solution (CRS) Model by pure
component properties such as, solubility parameter, coefficient of thermalexpansion and hard-core volume. In
this respect, the binodal curve, spinodal curve and the critical point were determined by numerical calculations.
Properties of components that were needed for these calculations have been taken from available data in the
literature. The good agreement between the theoretical binodal and experimental cloud points indicates that this
model is a promising method to calculate the theoretical phase diagram for membrane forming systems with
particular attention to the fact that no adjustable parameters such as binary interaction parameters should be
used for theoretical calculations. Also, the cloud point curves obtained for the above non-solvents indicated
that methanol has the strongest coagulation power among them. Results show that the composition of the
coagulation bath governs effectively the structure of the membranes.
ER  -