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Submicron particle size and polymerization excess surfactant analysis by capillary hydrodynamic fractionation (CHDF)
Author(s) -
Dos Ramos Jose G.,
Silebi Cesar A.
Publication year - 1993
Publication title -
polymer international
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.592
H-Index - 105
eISSN - 1097-0126
pISSN - 0959-8103
DOI - 10.1002/pi.4990300405
Subject(s) - dispersity , pulmonary surfactant , particle size , particle size distribution , materials science , capillary action , fractionation , particle (ecology) , polymer , analytical chemistry (journal) , polymerization , chromatography , polymer chemistry , chemical engineering , chemistry , composite material , oceanography , engineering , geology
The particle size distribution of a blend of two polymer latex monodisperse standards, 86 and 238 nm, has been measured by capillary hydrodynamic fractionation (CHDF). The particle size distributions obtained agreed well with the expected particle diameters. The relative amounts of the two standards in the blends were accurately measured at different blend ratios. The particle size distribution of a parenteral lipid sample was successfully measured. A soluble species was fractionated from latex standards smaller than 100nm. This soluble species appears to be excess surfactant used in the preparation of small size monodisperse latexes. The amount of excess surfactant increases as the particle diameter of the standard decreases.