| Abstract
| - To improve our understanding of the complex interface features related to deinking in paper recycling,model surfactant systems were investigated. Novel nonionic structures incorporating a C17 hydrophobicchain and block PO−EO sequences of equal composition but different total length were tested in termsof both their surface activity and their competitive adsorption at the air/water interface with respect tothe oleate anion. Static and dynamic measurements provided useful information about the diffusion toand molecular orientation at the interface of these species. In particular, the oligoether portion of thenonionic surfactants played a significant role in these phenomena, thanks to the changes of its chainconformation as a function of the crowding and composition of the interface.
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