From polymer molecular architecture to lubrication efficacy and CO2 emission reduction

In collaboration with Infineum (a world-leading engine-oil additive company), we propose a SANS study of self-assembly of novel polymethacrylate (PMA) block copolymers as a function of concentration and temperature. Preliminary SANS results for a diblock polymer architecture have revealed a core-shell micelle structure in a model oil (deuterated n-dodecane). Here different polymer architectures will be investigated (multiblock, diblock, random, and homo). The results will complement our ongoing interfacial structure and friction/lubrication studies using XRR and the surface force apparatus, in order to correlate their bulk structures with their surface adsorption behaviour. Such fundamental studies will assist rational design of future polymeric friction-modifying additives for mechanical lubrication, which is of immense environmental and economic importance in the UK and globally.