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Interfacial tension in polymer blends
Author(s) -
Luciani André,
Champagne Michel F.,
Utracki Leszek A.
Publication year - 1998
Publication title -
macromolecular symposia
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.257
H-Index - 76
eISSN - 1521-3900
pISSN - 1022-1360
DOI - 10.1002/masy.19981260125
Subject(s) - surface tension , breakup , polymer , materials science , thermodynamics , viscosity , drop (telecommunication) , polar , capillary action , hydrogen bond , hildebrand solubility parameter , solubility , polymer blend , polymer chemistry , polymer science , composite material , chemistry , mechanics , organic chemistry , molecule , physics , copolymer , telecommunications , astronomy , computer science
Theoretical models of the interfacial tension coefficient in polymer blends, v 12 , were evaluated. A new working relation was derived that makes it possible to compute v 12 from the chemical structure of two polymers. The calculations involve determination of the dispersive, polar and hydrogen‐bonding parts of the solubility parameter from the tabulated group and bond contributions. The computed values of v 12 for 46 blends were found to follow the experimental ones with a reasonable scatter of ± 36%. Next, the experimental methods of v 12 ‐measurements were critically examined. Although many have been developed for low viscosity Newtonian fluids, most are irrelevant to industrial polymeric systems. For the present studies two were selected. Values of v 12 were measured using the so‐called “capillary breakup method,” and a newly developed method based on the retraction rate of deformed drop.