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Study on the surface tensions of polymer melts using axisymmetric drop shape analysis
Author(s) -
Kwok D. Y.,
Cheung L. K.,
Park C. B.,
Neumann A. W.
Publication year - 1998
Publication title -
polymer engineering and science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.503
H-Index - 111
eISSN - 1548-2634
pISSN - 0032-3888
DOI - 10.1002/pen.10241
Subject(s) - surface tension , materials science , polymer , polypropylene , polystyrene , drop (telecommunication) , pulmonary surfactant , isothermal process , rotational symmetry , polyethylene , composite material , thermodynamics , polymer chemistry , mechanics , telecommunications , physics , computer science
Abstract It is shown that Axisymmetric Drop Shape Analysis (ADSA) is well‐suited for the study of polymer melt surface tensions. The technique is not restricted to equilibrium surface (interfacial) tensions; it is also suitable for measuring the time dependence (or kinetics) of surface tension of polymer melts. Results for three polymers, polypropylene, polyethylene, and polystyrene, at temperatures above 170°C are reported. Contrary to the well‐known decrease of surface tension in low molecular weight surfactant solutions as a result of equilibration, an increase in the melt surface tension is observed under isothermal conditions.