Foams built up by non-Newtonian polymeric solutions: Free drainage

The thinning of lamellae in surfactant-free foams with non-Newtonian liquid phase

Characterization of polymeric foams

Viscosity effects in foam drainage: Newtonian and non-newtonian foaming fluids.

We have studied the drainage of foams made from Newtonian and non-Newtonian solutions of different viscosities. Forced-drainage experiments first show that the behavior of Newtonian solutions and of shear-thinning ones (foaming solutions containing either Carbopol or Xanthan) are identical, provided one considers the actual viscosity corresponding to the shear rate found inside the foam. Second...

Monitoring the Built-up Area Transformation Using Urban Index and Normalized Difference Built-up Index Analysis

Makassar is one of the metropolitan cities located in Indonesia which recently experiences massive an increased construction because of population growth. Mapping the spatial distribution and development of the built-up region is the best method that can use as an indicator to set the urban planning policy. The purpose of this study is to identify changes in land use and density in Makassar Cit...

Negative Poisson's Ratio Polymeric and Metallic Foams

Foam materials based on metal and several polymers were transformed so that their cellular architectures became re-entrant, ie. with inwardly protruding cell ribs. Foams with re-entrant structures exhibited negative Poisson's ratios as well as greater resilience than conventional foams. Foams with negative Poisson's ratios were prepared using different techniques and materials and their mechani...