Abstract
It has been shown that the degree of dispersion achieved when 16.17-dimethoxyviolanthrone is milled in water is greater, the higher the concentration of surface-active agent, even in the range where there is more than sufficient to maintain a monolayer at adsorption equilibrium. This is interpreted in terms of the availability of agent molecules in the locality of fragmenting particles. At lower agent concentrations, phenomena of aggregation and coarsening on prolonged milling have been observed, and the progress of a milling of this type has been interpreted in the light of the measured adsorption behaviour of the surface-active agent in question on the solid. A study of the progress of a milling of copper phthalocyanine in a relatively dilute solution of a surface-active agent showed similar behaviour, an initial increase in surface area of the solid being followed by a marked decrease.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callMore From: Kolloid-Zeitschrift & Zeitschrift für Polymere
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
