The dimer L-lysine derivatives, in which two N,N-diacyl-L-lysines were crosslinked by calcium ion, were synthesized through a simply synthetic procedure and their gelation properties were examined. These compounds functioned as an organogelator; especially, the gelators possessing both a linear and a branched alkyl chains had the better organogelation ability and formed the thermally stable and...

Time-dependent rheological properties and thixotropy of reconstituted debris-flows samples taken from channel bank deposits are examined using a commercial rheometer equipped with vane rotor geometric system. Sweep tests creep were carried out involving mixtures having different grain concentrations ranging between 50% 58%. Different initial conditions the considered in order to analyze effects...

In this article, the extensional flow and viscosity and the converging-diverging geometry were examined as the basis of the peculiar viscoelastic behavior in porous media. The modified Bautista-Manero model, which successfully describes shearthinning, elasticity and thixotropic time-dependency, was used for modeling the flow of viscoelastic materials which also show thixotropic attributes. An a...

Thixotropic behavior describes a time-dependent rheological characterized by reversible changes. Fresh cementitious materials often require thixotropic to ensure sufficient workability and proper casting without vibration. Non-thixotropic induces loss. Cementitious cannot be considered as an ideal material due cement hydration, which leads irreversible However, in some cases, paste may demonstr...

maybe viscosity in drilling fluid is the most important parameter because cutting removal from well are task of viscose fluid. if viscosity of fluid is less than particular value, cutting will settle down in well and drilling operation will be stopped. in this study, synthesis of alumina/polyacrylamide nanocomposite through solution polymerization method was performed. rheological behavior of m...

Cereal Chern. 75(3):354-359 The solution rheological behaviors of OATRIM-1O and cooked oat bran were investigated. The rheological properties of the materials were investigated using both thixotropic loop and small-amplitude oscillatory shear experiments. The cooked oat bran exhibited shear-thinning behavior during a thixotropic loop experiment over a shear rate range of a250/sec. The shear-thi...

Aalto University, P.O. Box 11000, FI-00076 Aalto www.aalto.fi Author Mikael Mohtaschemi Name of the doctoral dissertation Spatially resolved rheology modeling of complex fluids Publisher School of Science Unit Department of Applied Physics Series Aalto University publication series DOCTORAL DISSERTATIONS 152/2015 Field of research Theoretical and Computational Physics Manuscript submitted 15 Ju...

A novel hexanuclear {Mn(6)} coordination complex with octahedral topology has been prepared and was subsequently used as a building unit for the construction of coordination polymers and metal-organic gels; the latter exhibit thixotropic behavior and reversible sol-gel phase transitions.