Abstract
Ellipsometry has been applied to the study of adsorption and desorption of flexible polymer chains in flowing systems. This optical technique produces a measurement of both film thickness and adsorbance under velocity gradients up to 7800 sec −1. Three molecular weight samples of monodisperse polystyrene ranging from 4 to 20 million were studied using cyclohexane at the θ condition as solvent. Bulk concentrations corresponded to saturated surface coverages. Chrome was used as the adsorbent. For preadsorbed polymer layers the results indicate flow-enhanced desorption whereas hydrodynamic forces were found to inhibit the adsorption of polymer chains from flowing solutions onto initially clean surfaces.
Sign-in/Register to access full text options 
Free) 
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 call
