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Energy losses in ultrafiltration hollow fibers: Effect of shape
Author(s) -
Galop M.,
Lamure A.,
Lacabanne C.
Publication year - 2000
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/1097-4628(20001003)78:1<8::aid-app20>3.0.co;2-t
Subject(s) - differential scanning calorimetry , materials science , ultrafiltration (renal) , membrane , spinning , creep , relaxation (psychology) , activation energy , composite material , porosity , degradation (telecommunications) , dielectric , polymer chemistry , chemical engineering , chemistry , thermodynamics , chromatography , psychology , social psychology , telecommunications , biochemistry , physics , optoelectronics , computer science , engineering
Abstract Mechanical and dielectric relaxation of ultrafiltration hollow fibers were studied by thermally stimulated creep and current, and differential scanning calorimetry. The high sensitivity of thermally stimulated techniques shows 8 relaxations and/or transitions between −150 and 350°C (degradation). Not all are related to the intrinsic nature of the material—indeed, 4 of them can be directly related to the shape of the membrane (porosity, diameters, spinning conditions, etc.). Molecular mechanisms of these phenomena are discussed. © 2000 John Wiley & Sons, Inc. J Appl Polym Sci 78: 8–13, 2000