Ultrathin lipid linings are terminal layers on articular cartilage and are of outmost importance for lubrication in mammalian joints. We will apply specular and offspecular neutron scattering to solid-supported, hyaluronic acid (HA)-interlinked DMPC oligo-bilayers against excess aqueous liquid phases (HA+D2O). The experiments will yield valuable insight into the microscopic mechanical behavior of the lipid coatings and thereby into the underlying mechanism responsible for lubrication. We will extract the compression- and bending moduli of the HA-interlinked lipid membranes by adapted modelling of the shape of the recorded Bragg-sheets in two dimensions (qz and q||). With a preset but varied number of lipid bilayers in the stacks we will focus on the influence of HA and temperature on the system mechanics.