Oxide films continued experimental techniques

COF for oxide-based tribo-systems was observed when adding PLL-g-PEG to aqueous buffer solution. The present study is a continuation of this work, focusing on the architectural parameters of the PLL-g-PEG copolymer and its influence on the macroscopic lubrication properties. The architectural parameters investigated in this work include side-chain (PEG) length, Lys/ PEG grafting ratio and backbone (PLL) length. The experimental techniques employed are ultra-thin-film interferometry, the mini-traction machine (MTM), and pin-on-disk tribometry. 

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