Application of 2D polymer film scaling theory to natural sea surface films

✍ Scribed by S.J. Pogorzelski

• Publisher: Elsevier Science
• Year: 1996
• Tongue: English
• Weight: 910 KB
• Volume: 114
• Category: Article
• ISSN: 0927-7757
• DOI: 10.1016/0927-7757(96)03571-6

✦ Synopsis

The polymer film scaling theory was applied, by measuring the high-frequency limit of the surface modulus Eo as a function of the surface pressure P [Eo=yP, where y= 2v/(2v-1) and v is the critical exponent of the excluded volume], to natural marine surface films. An increase in y from < 3.5 through ~ 8 to over 10 indicating "good", O, and "poor" solvent behaviour, respectively of the interfacial system is also correlated with the structure transition in the multicomponent film beginning from a homogeneous mixed monolayer, through a heterogeneous film with surfaceactive substances segregated into patches or domains to at least a vertically layered structure at the interface, and it is believed to hold for natural sea surface films. The scaling exponent y is a complex function of environmental factors affecting the film structure (bulk concentration of a surfactant, pH, ionic strength and composition of the subphase, temperature, locations of sampling site and film collection procedures).