Natural and abundant plant triterpenoids are attractive starting materials for the synthesis of conformationally rigid chiral building blocks functional soft materials. Here, we report rational design three oleanolic acid–triazole–spermine conjugates, containing either one or two spermine units in target molecules, using Cu(I)-catalyzed Huisgen 1,3-dipolar cycloaddition reaction. The resulting ...

A simple analytical model is introduced for describing the combined effect of thixotropic and nonlocal flow in a homogeneous stress field. The adequately describes experimental rheo-MRI velocimetry profiles, measured milk microgel suspension cone-and-plate geometry.

Nanocellulose (NC), due to its sustainable nature, high aspect ratio, superior mechanical strength, and availability of functionalizable OH groups, has been widely utilized as reinforcement in numerous fluids/plastics. The physico-chemical properties NC, like surface characteristics, dimensions/aspect ratio their concentration, significantly impact the interparticle interactions, such extent h...

Rheological measurements on a model thixotropic suspension developed by Dullaert and Mewis are performed, including large amplitude oscillatory shear (LAOS) flow, shear flow reversal, and a novel unidirectional LAOS flow, to provide an extended rheological data set for testing constitutive models. A new structure-based model is developed by improving the elastic stress component in the Delaware...

People and animals can move freely, but they must also be able to stay still. How do skeletal muscles economically produce both movement and posture? Humans are well known to have motor units with relatively homogeneous mechanical properties. Thixotropic muscle properties can provide a solution by providing a temporary stiffening of all skeletal muscles in postural conditions. This stiffening i...