Surface and bulk interchange energy in binary mixtures of chain molecules.
The interchange (interaction) parameter, controlling the phase behaviour of a binary mixture, is determined for the bulk and the surface of binary mixtures of different types of chain molecules, using surface tensiometry and a mean-field theory. For all mixtures and concentrations studied an identical behaviour is observed at the surface, depending only on the square of the reduced chain length mismatch delta n/n, where delta n and dealta n are the difference in and average of the number of carbons of the two components.
Sloutskin
E
E
Department of Physics, Bar-Ilan University, Ramat-Gan 52900, Israel.
Sirota
E B
EB
Gang
O
O
Wu
X Z
XZ
Ocko
B M
BM
Deutsch
M
M
D000438:Alcohols / Q000737:chemistry; D001703:Biophysics / Q000379:methods*; D002244:Carbon / Q000737:chemistry; D019277:Entropy; D013499:Surface Properties; D013696:Temperature; D013816:Thermodynamics
D000438:Alcohols; D002244:Carbon