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Expression of activity of the filler surface of composites in inverse gas chromatography
Author(s) -
Cigánek M.,
Dressler M.
Publication year - 1989
Publication title -
polymer composites
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.577
H-Index - 82
eISSN - 1548-0569
pISSN - 0272-8397
DOI - 10.1002/pc.750100307
Subject(s) - filler (materials) , inverse gas chromatography , talc , materials science , calcium carbonate , composite material , activity coefficient , benzene , organic chemistry , chemistry , surface energy , aqueous solution
A new way is introduced to express the interaction coefficient characterizing the surface activity of fillers. The interaction coefficient is a parameter showing how many times greater a specific interaction of a testing solute with a filler surface is than a nonspecific interaction of a hypothetical alkane with the same vapor pressure. A selectin of testing solutes for the determination of the interaction coefficient is discussed. Due to a high surface activity of the studied fillers for polyolefine composites, less polar solutes (furan, dichloromethane, trichloromethane, and benzene) have been selected to study these fillers. New evaluation coefficients of acidity, basicity, and acidobasicity are proposed for a rapid activity determination of a filler surface. These coefficients can be determined from a single chromatogram of the testing solutes. The surface activity of various fillers (calcium carbonate, talc, magnesium hydroxide), as expressed by the interaction coefficient, differs so much that even the differences of surface activities in one filler type (calcium carbonate), dependent on the origin or arrangement, are conclusive.