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Study of interactions in PVC‐plasticizer systems using low‐molecular‐weight analogs
Author(s) -
Akki Rashi,
Shaw Montgomery T.
Publication year - 1992
Publication title -
journal of vinyl technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.295
H-Index - 35
eISSN - 1548-0585
pISSN - 0193-7197
DOI - 10.1002/vnl.730140109
Subject(s) - unifac , plasticizer , pentane , propane , thermodynamics , mixing (physics) , calorimetry , entropy of mixing , enthalpy , chemistry , materials science , organic chemistry , activity coefficient , physics , quantum mechanics , aqueous solution
Abstract Because PVC mixes very slowly with plasticizer, analogs of PVC were used to obtain heats of mixing via direct calorimetry. Initial studies were done with DBP, DOP, and DOS plasticizers and chloroform, 1,3‐dichloropropane, and 2,4‐dichloropentane as the analogs. Simultaneous calculations for the enthalpy of mixing were done using the UNIFAC‐FV model. Both the propane and the pentane derivatives behaved according to the predictions of UNIFAC. Both experiments and calculations suggested that 1,3‐dichloropropane is a better model for PVC than 2,4‐dichloropentane.