Access the full text.
Sign up today, get DeepDyve free for 14 days.
Loading next page...
/lp/emerald-publishing/an-automatic-titration-system-for-dynamic-surface-tension-and-cmc-Z7zLN9iWZH
References
References for this paper are not available at this time. We will be adding them shortly, thank you for your patience.
- Publisher
- Emerald Publishing
- Copyright
- Copyright © Emerald Group Publishing Limited
- ISSN
- 0369-9420
- DOI
- 10.1108/eb043199
- Publisher site
- See Article on Publisher Site
Abstract
Waterbased inks and coatings require alcohols and surfactants to lower their surface tensions to acceptable levels, but have inherent problems of surface wetting, foaming, flow and levelling common to waterbased systems. They are formulated quite differently from solventbased systems, which wet readily and transfer well on to most ink train materials. Surfactants used in waterbased systems tend to be highly surfaceactive and can vary significantly with concentration and speed of diffusion depending on the surfactant type and molecular weight and structure compared with inherently low surface tension alcohols. A coating process is dynamic and, because active surfactants are utilized, surface tension will vary as application and press speed vary. It is the resulting variation in the speed of diffusion of the surfactant molecules that directly impacts on the quality of spreading and adhesion. Ink and coatings formulators must have knowledge of the principles of dynamic surface tension, and have instruments that can measure surface tension characteristics. Instruments must be simple to use, accurate, and as automatic as possible, to allow formulators to spend a minimum amount of time gathering necessary data.
Journal
Pigment & Resin Technology – Emerald Publishing
Published: Jun 1, 1996