Abstract
Superspreading is the phenomenon where a drop of trisiloxane surfactant solution rapidly spreads on a moderately hydrophobic substrate over a very large area. However the mechanism of superspreading is unknown to date. In this work Reflection Anisotropy Spectroscopy (RAS) is used for the first time in order to investigate the causes of superspreading. An aqueous solution of the superspreader Evonik S240 (0.1%) is compared with the chemically similar but non superspreading solution of Evonik S233 (0.1%), on a polycarbonate (pcp) substrate. This study is aimed at finding evidence of organised structures, such as micelles, at the contact line of the receding film which could be part of the mechanism of superspreading. The RA signal is monitored as the solutions recede from vertically aligned pcp substrates. The results are then analysed for evidence of anisotropy on the surface arising from any micelle structures located at the contact line of the film.
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 callDisclaimer: 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.
