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The effect of calcium ions on carbon suspensions
Author(s) -
Peper H.,
Rosano H. L.
Publication year - 1961
Publication title -
journal of the american oil chemists' society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.512
H-Index - 117
eISSN - 1558-9331
pISSN - 0003-021X
DOI - 10.1007/bf02631910
Subject(s) - flocculation , calcium , monolayer , carbon chain , adsorption , chemistry , alcohol , carbon fibers , dispersion (optics) , carbon black , ion , amphiphile , fatty alcohol , inorganic chemistry , calcium carbonate , chemical engineering , organic chemistry , materials science , biochemistry , polymer , physics , natural rubber , composite number , optics , copolymer , composite material , engineering
Abstract A high degree of dispersion of carbon black in water is obtained only in the presence of adsorbing long‐chain, amphipathic molecules. Calcium ions flocculate these dispersions, but agglomeration can be prevented if anionic detergents are adsorbed on the carbon. Fine dispersions of carbon coated with a fatty acid or alcohol were maintained in the presence of calcium ions with detergents which coadsorb with the acid or alcohol monolayer. The significance of these results in regard to detergency theory is discussed.